diff --git a/libc/kernel/arch-x86/asm/a.out.h b/libc/kernel/arch-x86/asm/a.out.h
index 6aecff7..fa287b5 100644
--- a/libc/kernel/arch-x86/asm/a.out.h
+++ b/libc/kernel/arch-x86/asm/a.out.h
@@ -7,25 +7,33 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_A_OUT_H
 #define _ASM_X86_A_OUT_H
-
 struct exec
 {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int a_info;
  unsigned a_text;
  unsigned a_data;
  unsigned a_bss;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned a_syms;
  unsigned a_entry;
  unsigned a_trsize;
  unsigned a_drsize;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 #define N_TRSIZE(a) ((a).a_trsize)
 #define N_DRSIZE(a) ((a).a_drsize)
 #define N_SYMSIZE(a) ((a).a_syms)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/acpi.h b/libc/kernel/arch-x86/asm/acpi.h
index 0115ce9..255f7dc 100644
--- a/libc/kernel/arch-x86/asm/acpi.h
+++ b/libc/kernel/arch-x86/asm/acpi.h
@@ -7,13 +7,18 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_ACPI_H
 #define _ASM_X86_ACPI_H
-
 #include "acpi_64.h"
-
 #include <asm/processor.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/acpi_32.h b/libc/kernel/arch-x86/asm/acpi_32.h
index fe0043c..af60c63 100644
--- a/libc/kernel/arch-x86/asm/acpi_32.h
+++ b/libc/kernel/arch-x86/asm/acpi_32.h
@@ -7,9 +7,15 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_ACPI_H
 #define _ASM_ACPI_H
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/alternative.h b/libc/kernel/arch-x86/asm/alternative.h
index 17c1dc5..52b937b 100644
--- a/libc/kernel/arch-x86/asm/alternative.h
+++ b/libc/kernel/arch-x86/asm/alternative.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "alternative_64.h"
diff --git a/libc/kernel/arch-x86/asm/alternative_32.h b/libc/kernel/arch-x86/asm/alternative_32.h
index ef13111..5aa2088 100644
--- a/libc/kernel/arch-x86/asm/alternative_32.h
+++ b/libc/kernel/arch-x86/asm/alternative_32.h
@@ -7,32 +7,40 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _I386_ALTERNATIVE_H
 #define _I386_ALTERNATIVE_H
-
 #include <asm/types.h>
 #include <linux/stddef.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <linux/types.h>
-
 struct alt_instr {
  u8 *instr;
  u8 *replacement;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  u8 cpuid;
  u8 instrlen;
  u8 replacementlen;
  u8 pad;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 struct module;
 #define alternative(oldinstr, newinstr, feature)   asm volatile ("661:\n\t" oldinstr "\n662:\n"   ".section .altinstructions,\"a\"\n"   "  .align 4\n"   "  .long 661b\n"     "  .long 663f\n"     "  .byte %c0\n"     "  .byte 662b-661b\n"     "  .byte 664f-663f\n"     ".previous\n"   ".section .altinstr_replacement,\"ax\"\n"   "663:\n\t" newinstr "\n664:\n"    ".previous" :: "i" (feature) : "memory")
 #define alternative_input(oldinstr, newinstr, feature, input...)   asm volatile ("661:\n\t" oldinstr "\n662:\n"   ".section .altinstructions,\"a\"\n"   "  .align 4\n"   "  .long 661b\n"     "  .long 663f\n"     "  .byte %c0\n"     "  .byte 662b-661b\n"     "  .byte 664f-663f\n"     ".previous\n"   ".section .altinstr_replacement,\"ax\"\n"   "663:\n\t" newinstr "\n664:\n"    ".previous" :: "i" (feature), ##input)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define alternative_io(oldinstr, newinstr, feature, output, input...)   asm volatile ("661:\n\t" oldinstr "\n662:\n"   ".section .altinstructions,\"a\"\n"   "  .align 4\n"   "  .long 661b\n"     "  .long 663f\n"     "  .byte %c[feat]\n"     "  .byte 662b-661b\n"     "  .byte 664f-663f\n"     ".previous\n"   ".section .altinstr_replacement,\"ax\"\n"   "663:\n\t" newinstr "\n664:\n"     ".previous" : output : [feat] "i" (feature), ##input)
 #define ASM_OUTPUT2(a, b) a, b
 #define LOCK_PREFIX ""
-
+struct paravirt_patch_site;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __parainstructions NULL
 #define __parainstructions_end NULL
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/apic.h b/libc/kernel/arch-x86/asm/apic.h
index 5cb7181..d628eb3 100644
--- a/libc/kernel/arch-x86/asm/apic.h
+++ b/libc/kernel/arch-x86/asm/apic.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "apic_64.h"
diff --git a/libc/kernel/arch-x86/asm/apic_32.h b/libc/kernel/arch-x86/asm/apic_32.h
index 02c9d9b..ccb390b 100644
--- a/libc/kernel/arch-x86/asm/apic_32.h
+++ b/libc/kernel/arch-x86/asm/apic_32.h
@@ -7,25 +7,30 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ASM_APIC_H
 #define __ASM_APIC_H
-
 #include <linux/pm.h>
 #include <linux/delay.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/fixmap.h>
 #include <asm/apicdef.h>
 #include <asm/processor.h>
 #include <asm/system.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define Dprintk(x...)
-
 #define APIC_QUIET 0
 #define APIC_VERBOSE 1
 #define APIC_DEBUG 2
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define apic_printk(v, s, a...) do {   if ((v) <= apic_verbosity)   printk(s, ##a);   } while (0)
-
 #define local_apic_timer_c2_ok 1
 #endif
diff --git a/libc/kernel/arch-x86/asm/apicdef.h b/libc/kernel/arch-x86/asm/apicdef.h
index bd19f5a..8890eb3 100644
--- a/libc/kernel/arch-x86/asm/apicdef.h
+++ b/libc/kernel/arch-x86/asm/apicdef.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "apicdef_64.h"
diff --git a/libc/kernel/arch-x86/asm/apicdef_32.h b/libc/kernel/arch-x86/asm/apicdef_32.h
index a4a5edb..1f1bb2f 100644
--- a/libc/kernel/arch-x86/asm/apicdef_32.h
+++ b/libc/kernel/arch-x86/asm/apicdef_32.h
@@ -7,366 +7,398 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ASM_APICDEF_H
 #define __ASM_APICDEF_H
-
 #define APIC_DEFAULT_PHYS_BASE 0xfee00000
-
 #define APIC_ID 0x20
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_LVR 0x30
 #define APIC_LVR_MASK 0xFF00FF
 #define GET_APIC_VERSION(x) ((x)&0xFF)
 #define GET_APIC_MAXLVT(x) (((x)>>16)&0xFF)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_INTEGRATED(x) ((x)&0xF0)
 #define APIC_XAPIC(x) ((x) >= 0x14)
 #define APIC_TASKPRI 0x80
 #define APIC_TPRI_MASK 0xFF
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_ARBPRI 0x90
 #define APIC_ARBPRI_MASK 0xFF
 #define APIC_PROCPRI 0xA0
 #define APIC_EOI 0xB0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_EIO_ACK 0x0  
 #define APIC_RRR 0xC0
 #define APIC_LDR 0xD0
 #define APIC_LDR_MASK (0xFF<<24)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define GET_APIC_LOGICAL_ID(x) (((x)>>24)&0xFF)
 #define SET_APIC_LOGICAL_ID(x) (((x)<<24))
 #define APIC_ALL_CPUS 0xFF
 #define APIC_DFR 0xE0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_DFR_CLUSTER 0x0FFFFFFFul
 #define APIC_DFR_FLAT 0xFFFFFFFFul
 #define APIC_SPIV 0xF0
 #define APIC_SPIV_FOCUS_DISABLED (1<<9)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_SPIV_APIC_ENABLED (1<<8)
 #define APIC_ISR 0x100
 #define APIC_ISR_NR 0x8  
 #define APIC_TMR 0x180
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_IRR 0x200
 #define APIC_ESR 0x280
 #define APIC_ESR_SEND_CS 0x00001
 #define APIC_ESR_RECV_CS 0x00002
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_ESR_SEND_ACC 0x00004
 #define APIC_ESR_RECV_ACC 0x00008
 #define APIC_ESR_SENDILL 0x00020
 #define APIC_ESR_RECVILL 0x00040
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_ESR_ILLREGA 0x00080
 #define APIC_ICR 0x300
 #define APIC_DEST_SELF 0x40000
 #define APIC_DEST_ALLINC 0x80000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_DEST_ALLBUT 0xC0000
 #define APIC_ICR_RR_MASK 0x30000
 #define APIC_ICR_RR_INVALID 0x00000
 #define APIC_ICR_RR_INPROG 0x10000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_ICR_RR_VALID 0x20000
 #define APIC_INT_LEVELTRIG 0x08000
 #define APIC_INT_ASSERT 0x04000
 #define APIC_ICR_BUSY 0x01000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_DEST_LOGICAL 0x00800
 #define APIC_DM_FIXED 0x00000
 #define APIC_DM_LOWEST 0x00100
 #define APIC_DM_SMI 0x00200
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_DM_REMRD 0x00300
 #define APIC_DM_NMI 0x00400
 #define APIC_DM_INIT 0x00500
 #define APIC_DM_STARTUP 0x00600
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_DM_EXTINT 0x00700
 #define APIC_VECTOR_MASK 0x000FF
 #define APIC_ICR2 0x310
 #define GET_APIC_DEST_FIELD(x) (((x)>>24)&0xFF)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SET_APIC_DEST_FIELD(x) ((x)<<24)
 #define APIC_LVTT 0x320
 #define APIC_LVTTHMR 0x330
 #define APIC_LVTPC 0x340
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_LVT0 0x350
 #define APIC_LVT_TIMER_BASE_MASK (0x3<<18)
 #define GET_APIC_TIMER_BASE(x) (((x)>>18)&0x3)
 #define SET_APIC_TIMER_BASE(x) (((x)<<18))
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_TIMER_BASE_CLKIN 0x0
 #define APIC_TIMER_BASE_TMBASE 0x1
 #define APIC_TIMER_BASE_DIV 0x2
 #define APIC_LVT_TIMER_PERIODIC (1<<17)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_LVT_MASKED (1<<16)
 #define APIC_LVT_LEVEL_TRIGGER (1<<15)
 #define APIC_LVT_REMOTE_IRR (1<<14)
 #define APIC_INPUT_POLARITY (1<<13)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_SEND_PENDING (1<<12)
 #define APIC_MODE_MASK 0x700
 #define GET_APIC_DELIVERY_MODE(x) (((x)>>8)&0x7)
 #define SET_APIC_DELIVERY_MODE(x,y) (((x)&~0x700)|((y)<<8))
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_MODE_FIXED 0x0
 #define APIC_MODE_NMI 0x4
 #define APIC_MODE_EXTINT 0x7
 #define APIC_LVT1 0x360
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_LVTERR 0x370
 #define APIC_TMICT 0x380
 #define APIC_TMCCT 0x390
 #define APIC_TDCR 0x3E0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_TDR_DIV_TMBASE (1<<2)
 #define APIC_TDR_DIV_1 0xB
 #define APIC_TDR_DIV_2 0x0
 #define APIC_TDR_DIV_4 0x1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_TDR_DIV_8 0x2
 #define APIC_TDR_DIV_16 0x3
 #define APIC_TDR_DIV_32 0x8
 #define APIC_TDR_DIV_64 0x9
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_TDR_DIV_128 0xA
-
 #define APIC_BASE (fix_to_virt(FIX_APIC_BASE))
-
 #define MAX_IO_APICS 64
-
 #define u32 unsigned int
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct local_apic {
-
   struct { u32 __reserved[4]; } __reserved_01;
-
   struct { u32 __reserved[4]; } __reserved_02;
-
   struct {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  u32 __reserved_1 : 24,
  phys_apic_id : 4,
  __reserved_2 : 4;
  u32 __reserved[3];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  } id;
-
   const
  struct {
  u32 version : 8,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __reserved_1 : 8,
  max_lvt : 8,
  __reserved_2 : 8;
  u32 __reserved[3];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  } version;
-
   struct { u32 __reserved[4]; } __reserved_03;
-
   struct { u32 __reserved[4]; } __reserved_04;
-
   struct { u32 __reserved[4]; } __reserved_05;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   struct { u32 __reserved[4]; } __reserved_06;
-
   struct {
  u32 priority : 8,
  __reserved_1 : 24;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  u32 __reserved_2[3];
  } tpr;
-
   const
  struct {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  u32 priority : 8,
  __reserved_1 : 24;
  u32 __reserved_2[3];
  } apr;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   const
  struct {
  u32 priority : 8,
  __reserved_1 : 24;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  u32 __reserved_2[3];
  } ppr;
-
   struct {
  u32 eoi;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  u32 __reserved[3];
  } eoi;
-
   struct { u32 __reserved[4]; } __reserved_07;
-
   struct {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  u32 __reserved_1 : 24,
  logical_dest : 8;
  u32 __reserved_2[3];
  } ldr;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   struct {
  u32 __reserved_1 : 28,
  model : 4;
  u32 __reserved_2[3];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  } dfr;
-
   struct {
  u32 spurious_vector : 8,
  apic_enabled : 1,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  focus_cpu : 1,
  __reserved_2 : 22;
  u32 __reserved_3[3];
  } svr;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   struct {
   u32 bitfield;
  u32 __reserved[3];
  } isr [8];
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   struct {
   u32 bitfield;
  u32 __reserved[3];
  } tmr [8];
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   struct {
   u32 bitfield;
  u32 __reserved[3];
  } irr [8];
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   union {
  struct {
  u32 send_cs_error : 1,
  receive_cs_error : 1,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  send_accept_error : 1,
  receive_accept_error : 1,
  __reserved_1 : 1,
  send_illegal_vector : 1,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  receive_illegal_vector : 1,
  illegal_register_address : 1,
  __reserved_2 : 24;
  u32 __reserved_3[3];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  } error_bits;
  struct {
  u32 errors;
  u32 __reserved_3[3];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  } all_errors;
  } esr;
-
   struct { u32 __reserved[4]; } __reserved_08;
-
   struct { u32 __reserved[4]; } __reserved_09;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   struct { u32 __reserved[4]; } __reserved_10;
-
   struct { u32 __reserved[4]; } __reserved_11;
-
   struct { u32 __reserved[4]; } __reserved_12;
-
   struct { u32 __reserved[4]; } __reserved_13;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   struct { u32 __reserved[4]; } __reserved_14;
-
   struct {
  u32 vector : 8,
  delivery_mode : 3,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  destination_mode : 1,
  delivery_status : 1,
  __reserved_1 : 1,
  level : 1,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  trigger : 1,
  __reserved_2 : 2,
  shorthand : 2,
  __reserved_3 : 12;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  u32 __reserved_4[3];
  } icr1;
-
   struct {
  union {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  u32 __reserved_1 : 24,
  phys_dest : 4,
  __reserved_2 : 4;
  u32 __reserved_3 : 24,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  logical_dest : 8;
  } dest;
  u32 __reserved_4[3];
  } icr2;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   struct {
  u32 vector : 8,
  __reserved_1 : 4,
  delivery_status : 1,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __reserved_2 : 3,
  mask : 1,
  timer_mode : 1,
  __reserved_3 : 14;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  u32 __reserved_4[3];
  } lvt_timer;
-
   struct {
  u32 vector : 8,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  delivery_mode : 3,
  __reserved_1 : 1,
  delivery_status : 1,
  __reserved_2 : 3,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  mask : 1,
  __reserved_3 : 15;
  u32 __reserved_4[3];
  } lvt_thermal;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   struct {
  u32 vector : 8,
  delivery_mode : 3,
  __reserved_1 : 1,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  delivery_status : 1,
  __reserved_2 : 3,
  mask : 1,
  __reserved_3 : 15;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  u32 __reserved_4[3];
  } lvt_pc;
-
   struct {
  u32 vector : 8,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  delivery_mode : 3,
  __reserved_1 : 1,
  delivery_status : 1,
  polarity : 1,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  remote_irr : 1,
  trigger : 1,
  mask : 1,
  __reserved_2 : 15;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  u32 __reserved_3[3];
  } lvt_lint0;
-
   struct {
  u32 vector : 8,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  delivery_mode : 3,
  __reserved_1 : 1,
  delivery_status : 1,
  polarity : 1,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  remote_irr : 1,
  trigger : 1,
  mask : 1,
  __reserved_2 : 15;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  u32 __reserved_3[3];
  } lvt_lint1;
-
   struct {
  u32 vector : 8,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __reserved_1 : 4,
  delivery_status : 1,
  __reserved_2 : 3,
  mask : 1,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __reserved_3 : 15;
  u32 __reserved_4[3];
  } lvt_error;
-
   struct {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  u32 initial_count;
  u32 __reserved_2[3];
  } timer_icr;
-
   const
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct {
  u32 curr_count;
  u32 __reserved_2[3];
  } timer_ccr;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   struct { u32 __reserved[4]; } __reserved_16;
-
   struct { u32 __reserved[4]; } __reserved_17;
-
   struct { u32 __reserved[4]; } __reserved_18;
-
   struct { u32 __reserved[4]; } __reserved_19;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   struct {
  u32 divisor : 4,
  __reserved_1 : 28;
  u32 __reserved_2[3];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  } timer_dcr;
-
   struct { u32 __reserved[4]; } __reserved_20;
-
 } __attribute__ ((packed));
-
 #undef u32
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/atomic.h b/libc/kernel/arch-x86/asm/atomic.h
index 00289cf..0c0037c 100644
--- a/libc/kernel/arch-x86/asm/atomic.h
+++ b/libc/kernel/arch-x86/asm/atomic.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "atomic_64.h"
diff --git a/libc/kernel/arch-x86/asm/atomic_32.h b/libc/kernel/arch-x86/asm/atomic_32.h
index 677aac8..355b620 100644
--- a/libc/kernel/arch-x86/asm/atomic_32.h
+++ b/libc/kernel/arch-x86/asm/atomic_32.h
@@ -7,33 +7,39 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ARCH_I386_ATOMIC__
 #define __ARCH_I386_ATOMIC__
-
 #include <linux/compiler.h>
 #include <asm/processor.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/cmpxchg.h>
-
 typedef struct { int counter; } atomic_t;
-
 #define ATOMIC_INIT(i) { (i) }
-
 #define atomic_read(v) ((v)->counter)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define atomic_set(v,i) (((v)->counter) = (i))
-
 #define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), (old), (new)))
 #define atomic_xchg(v, new) (xchg(&((v)->counter), (new)))
 #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define atomic_inc_return(v) (atomic_add_return(1,v))
 #define atomic_dec_return(v) (atomic_sub_return(1,v))
 #define atomic_clear_mask(mask, addr)  __asm__ __volatile__(LOCK_PREFIX "andl %0,%1"  : : "r" (~(mask)),"m" (*addr) : "memory")
 #define atomic_set_mask(mask, addr)  __asm__ __volatile__(LOCK_PREFIX "orl %0,%1"  : : "r" (mask),"m" (*(addr)) : "memory")
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define smp_mb__before_atomic_dec() barrier()
 #define smp_mb__after_atomic_dec() barrier()
 #define smp_mb__before_atomic_inc() barrier()
 #define smp_mb__after_atomic_inc() barrier()
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm-generic/atomic.h>
 #endif
diff --git a/libc/kernel/arch-x86/asm/auxvec.h b/libc/kernel/arch-x86/asm/auxvec.h
index f065eb1..4fd3bc9 100644
--- a/libc/kernel/arch-x86/asm/auxvec.h
+++ b/libc/kernel/arch-x86/asm/auxvec.h
@@ -7,14 +7,20 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_AUXVEC_H
 #define _ASM_X86_AUXVEC_H
-
 #ifdef __i386__
 #define AT_SYSINFO 32
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
 #define AT_SYSINFO_EHDR 33
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/bitops.h b/libc/kernel/arch-x86/asm/bitops.h
index 3b58565..657534d 100644
--- a/libc/kernel/arch-x86/asm/bitops.h
+++ b/libc/kernel/arch-x86/asm/bitops.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "bitops_64.h"
diff --git a/libc/kernel/arch-x86/asm/bitops_32.h b/libc/kernel/arch-x86/asm/bitops_32.h
index fa77fe2..b17b5f9 100644
--- a/libc/kernel/arch-x86/asm/bitops_32.h
+++ b/libc/kernel/arch-x86/asm/bitops_32.h
@@ -7,24 +7,29 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _I386_BITOPS_H
 #define _I386_BITOPS_H
-
 #ifndef _LINUX_BITOPS_H
 #error only <linux/bitops.h> can be included directly
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
-
 #include <linux/compiler.h>
 #include <asm/alternative.h>
-
 #define ADDR (*(volatile long *) addr)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define smp_mb__before_clear_bit() barrier()
 #define smp_mb__after_clear_bit() barrier()
 #define test_bit(nr,addr)  (__builtin_constant_p(nr) ?   constant_test_bit((nr),(addr)) :   variable_test_bit((nr),(addr)))
 #undef ADDR
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm-generic/bitops/fls64.h>
 #endif
diff --git a/libc/kernel/arch-x86/asm/bug.h b/libc/kernel/arch-x86/asm/bug.h
index 9247022..4b3edf4 100644
--- a/libc/kernel/arch-x86/asm/bug.h
+++ b/libc/kernel/arch-x86/asm/bug.h
@@ -7,10 +7,17 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_BUG_H
 #define _ASM_X86_BUG_H
-
 #include <asm-generic/bug.h>
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/byteorder.h b/libc/kernel/arch-x86/asm/byteorder.h
index a839798..98fc6b1 100644
--- a/libc/kernel/arch-x86/asm/byteorder.h
+++ b/libc/kernel/arch-x86/asm/byteorder.h
@@ -7,64 +7,68 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_BYTEORDER_H
 #define _ASM_X86_BYTEORDER_H
-
 #include <asm/types.h>
 #include <linux/compiler.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #ifdef __GNUC__
-
 #ifdef __i386__
-
 static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
 {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __asm__("xchgb %b0,%h0\n\t"
  "rorl $16,%0\n\t"
  "xchgb %b0,%h0"
  :"=q" (x)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  : "0" (x));
  return x;
 }
-
 static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 val)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 {
  union {
  struct { __u32 a,b; } s;
  __u64 u;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  } v;
  v.u = val;
  v.s.a = ___arch__swab32(v.s.a);
  v.s.b = ___arch__swab32(v.s.b);
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __asm__("xchgl %0,%1" : "=r" (v.s.a), "=r" (v.s.b) : "0" (v.s.a), "1" (v.s.b));
  return v.u;
 }
-
 #else
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x)
 {
  __asm__("bswapq %0" : "=r" (x) : "0" (x));
  return x;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 }
-
 static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
 {
  __asm__("bswapl %0" : "=r" (x) : "0" (x));
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  return x;
 }
-
 #endif
-
 #define __arch__swab64(x) ___arch__swab64(x)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __arch__swab32(x) ___arch__swab32(x)
-
 #define __BYTEORDER_HAS_U64__
-
 #endif
-
 #include <linux/byteorder/little_endian.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/cache.h b/libc/kernel/arch-x86/asm/cache.h
index 2766a71..9c607e9 100644
--- a/libc/kernel/arch-x86/asm/cache.h
+++ b/libc/kernel/arch-x86/asm/cache.h
@@ -7,14 +7,19 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ARCH_X86_CACHE_H
 #define _ARCH_X86_CACHE_H
-
 #define L1_CACHE_SHIFT (CONFIG_X86_L1_CACHE_SHIFT)
 #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __read_mostly __attribute__((__section__(".data.read_mostly")))
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/cacheflush.h b/libc/kernel/arch-x86/asm/cacheflush.h
index 028277b..92a6458 100644
--- a/libc/kernel/arch-x86/asm/cacheflush.h
+++ b/libc/kernel/arch-x86/asm/cacheflush.h
@@ -7,28 +7,35 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_CACHEFLUSH_H
 #define _ASM_X86_CACHEFLUSH_H
-
 #include <linux/mm.h>
-
 #define flush_cache_all() do { } while (0)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define flush_cache_mm(mm) do { } while (0)
 #define flush_cache_dup_mm(mm) do { } while (0)
 #define flush_cache_range(vma, start, end) do { } while (0)
 #define flush_cache_page(vma, vmaddr, pfn) do { } while (0)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define flush_dcache_page(page) do { } while (0)
 #define flush_dcache_mmap_lock(mapping) do { } while (0)
 #define flush_dcache_mmap_unlock(mapping) do { } while (0)
 #define flush_icache_range(start, end) do { } while (0)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define flush_icache_page(vma,pg) do { } while (0)
 #define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
 #define flush_cache_vmap(start, end) do { } while (0)
 #define flush_cache_vunmap(start, end) do { } while (0)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define copy_to_user_page(vma, page, vaddr, dst, src, len)   memcpy(dst, src, len)
 #define copy_from_user_page(vma, page, vaddr, dst, src, len)   memcpy(dst, src, len)
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/cmpxchg.h b/libc/kernel/arch-x86/asm/cmpxchg.h
index de059a2..0379a49 100644
--- a/libc/kernel/arch-x86/asm/cmpxchg.h
+++ b/libc/kernel/arch-x86/asm/cmpxchg.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "cmpxchg_64.h"
diff --git a/libc/kernel/arch-x86/asm/cmpxchg_32.h b/libc/kernel/arch-x86/asm/cmpxchg_32.h
index 3632f4c..0da9b38 100644
--- a/libc/kernel/arch-x86/asm/cmpxchg_32.h
+++ b/libc/kernel/arch-x86/asm/cmpxchg_32.h
@@ -7,25 +7,30 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ASM_CMPXCHG_H
 #define __ASM_CMPXCHG_H
-
 #include <linux/bitops.h>  
-
 #define xchg(ptr,v) ((__typeof__(*(ptr)))__xchg((unsigned long)(v),(ptr),sizeof(*(ptr))))
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct __xchg_dummy { unsigned long a[100]; };
 #define __xg(x) ((struct __xchg_dummy *)(x))
-
 #define ll_low(x) *(((unsigned int*)&(x))+0)
 #define ll_high(x) *(((unsigned int*)&(x))+1)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define set_64bit(ptr,value)  (__builtin_constant_p(value) ?   __set_64bit_constant(ptr, value) :   __set_64bit_var(ptr, value) )
 #define _set_64bit(ptr,value)  (__builtin_constant_p(value) ?   __set_64bit(ptr, (unsigned int)(value), (unsigned int)((value)>>32ULL) ) :   __set_64bit(ptr, ll_low(value), ll_high(value)) )
-
 #define cmpxchg(ptr,o,n)  ({   __typeof__(*(ptr)) __ret;   if (likely(boot_cpu_data.x86 > 3))   __ret = __cmpxchg((ptr), (unsigned long)(o),   (unsigned long)(n), sizeof(*(ptr)));   else   __ret = cmpxchg_386((ptr), (unsigned long)(o),   (unsigned long)(n), sizeof(*(ptr)));   __ret;  })
 #define cmpxchg_local(ptr,o,n)  ({   __typeof__(*(ptr)) __ret;   if (likely(boot_cpu_data.x86 > 3))   __ret = __cmpxchg_local((ptr), (unsigned long)(o),   (unsigned long)(n), sizeof(*(ptr)));   else   __ret = cmpxchg_386((ptr), (unsigned long)(o),   (unsigned long)(n), sizeof(*(ptr)));   __ret;  })
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define cmpxchg64(ptr,o,n)  ((__typeof__(*(ptr)))__cmpxchg64((ptr),(unsigned long long)(o),  (unsigned long long)(n)))
 #define cmpxchg64_local(ptr,o,n)  ((__typeof__(*(ptr)))__cmpxchg64_local((ptr),(unsigned long long)(o),  (unsigned long long)(n)))
 #endif
diff --git a/libc/kernel/arch-x86/asm/cpufeature.h b/libc/kernel/arch-x86/asm/cpufeature.h
index 47af457..23637d1 100644
--- a/libc/kernel/arch-x86/asm/cpufeature.h
+++ b/libc/kernel/arch-x86/asm/cpufeature.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "cpufeature_64.h"
diff --git a/libc/kernel/arch-x86/asm/cpufeature_32.h b/libc/kernel/arch-x86/asm/cpufeature_32.h
index a8ebc40..d3caa6f 100644
--- a/libc/kernel/arch-x86/asm/cpufeature_32.h
+++ b/libc/kernel/arch-x86/asm/cpufeature_32.h
@@ -7,145 +7,165 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ASM_I386_CPUFEATURE_H
 #define __ASM_I386_CPUFEATURE_H
-
 #ifndef __ASSEMBLY__
 #include <linux/bitops.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
 #include <asm/required-features.h>
-
 #define NCAPINTS 8  
-
 #define X86_FEATURE_FPU (0*32+ 0)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_FEATURE_VME (0*32+ 1)  
 #define X86_FEATURE_DE (0*32+ 2)  
 #define X86_FEATURE_PSE (0*32+ 3)  
 #define X86_FEATURE_TSC (0*32+ 4)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_FEATURE_MSR (0*32+ 5)  
 #define X86_FEATURE_PAE (0*32+ 6)  
 #define X86_FEATURE_MCE (0*32+ 7)  
 #define X86_FEATURE_CX8 (0*32+ 8)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_FEATURE_APIC (0*32+ 9)  
 #define X86_FEATURE_SEP (0*32+11)  
 #define X86_FEATURE_MTRR (0*32+12)  
 #define X86_FEATURE_PGE (0*32+13)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_FEATURE_MCA (0*32+14)  
 #define X86_FEATURE_CMOV (0*32+15)  
 #define X86_FEATURE_PAT (0*32+16)  
 #define X86_FEATURE_PSE36 (0*32+17)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_FEATURE_PN (0*32+18)  
 #define X86_FEATURE_CLFLSH (0*32+19)  
 #define X86_FEATURE_DS (0*32+21)  
 #define X86_FEATURE_ACPI (0*32+22)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_FEATURE_MMX (0*32+23)  
 #define X86_FEATURE_FXSR (0*32+24)  
-
 #define X86_FEATURE_XMM (0*32+25)  
 #define X86_FEATURE_XMM2 (0*32+26)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_FEATURE_SELFSNOOP (0*32+27)  
 #define X86_FEATURE_HT (0*32+28)  
 #define X86_FEATURE_ACC (0*32+29)  
 #define X86_FEATURE_IA64 (0*32+30)  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_FEATURE_SYSCALL (1*32+11)  
 #define X86_FEATURE_MP (1*32+19)  
 #define X86_FEATURE_NX (1*32+20)  
 #define X86_FEATURE_MMXEXT (1*32+22)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_FEATURE_RDTSCP (1*32+27)  
 #define X86_FEATURE_LM (1*32+29)  
 #define X86_FEATURE_3DNOWEXT (1*32+30)  
 #define X86_FEATURE_3DNOW (1*32+31)  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_FEATURE_RECOVERY (2*32+ 0)  
 #define X86_FEATURE_LONGRUN (2*32+ 1)  
 #define X86_FEATURE_LRTI (2*32+ 3)  
-
 #define X86_FEATURE_CXMMX (3*32+ 0)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_FEATURE_K6_MTRR (3*32+ 1)  
 #define X86_FEATURE_CYRIX_ARR (3*32+ 2)  
 #define X86_FEATURE_CENTAUR_MCR (3*32+ 3)  
-
 #define X86_FEATURE_K8 (3*32+ 4)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_FEATURE_K7 (3*32+ 5)  
 #define X86_FEATURE_P3 (3*32+ 6)  
 #define X86_FEATURE_P4 (3*32+ 7)  
 #define X86_FEATURE_CONSTANT_TSC (3*32+ 8)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_FEATURE_UP (3*32+ 9)  
 #define X86_FEATURE_FXSAVE_LEAK (3*32+10)  
 #define X86_FEATURE_ARCH_PERFMON (3*32+11)  
 #define X86_FEATURE_PEBS (3*32+12)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_FEATURE_BTS (3*32+13)  
-
 #define X86_FEATURE_SYNC_RDTSC (3*32+15)  
 #define X86_FEATURE_REP_GOOD (3*32+16)  
-
 #define X86_FEATURE_XMM3 (4*32+ 0)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_FEATURE_MWAIT (4*32+ 3)  
 #define X86_FEATURE_DSCPL (4*32+ 4)  
 #define X86_FEATURE_EST (4*32+ 7)  
 #define X86_FEATURE_TM2 (4*32+ 8)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_FEATURE_CID (4*32+10)  
 #define X86_FEATURE_CX16 (4*32+13)  
 #define X86_FEATURE_XTPR (4*32+14)  
 #define X86_FEATURE_DCA (4*32+18)  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_FEATURE_XSTORE (5*32+ 2)  
 #define X86_FEATURE_XSTORE_EN (5*32+ 3)  
 #define X86_FEATURE_XCRYPT (5*32+ 6)  
 #define X86_FEATURE_XCRYPT_EN (5*32+ 7)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_FEATURE_ACE2 (5*32+ 8)  
 #define X86_FEATURE_ACE2_EN (5*32+ 9)  
 #define X86_FEATURE_PHE (5*32+ 10)  
 #define X86_FEATURE_PHE_EN (5*32+ 11)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_FEATURE_PMM (5*32+ 12)  
 #define X86_FEATURE_PMM_EN (5*32+ 13)  
-
 #define X86_FEATURE_LAHF_LM (6*32+ 0)  
 #define X86_FEATURE_CMP_LEGACY (6*32+ 1)  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_FEATURE_IDA (7*32+ 0)  
-
 #define cpu_has(c, bit)   (__builtin_constant_p(bit) &&   ( (((bit)>>5)==0 && (1UL<<((bit)&31) & REQUIRED_MASK0)) ||   (((bit)>>5)==1 && (1UL<<((bit)&31) & REQUIRED_MASK1)) ||   (((bit)>>5)==2 && (1UL<<((bit)&31) & REQUIRED_MASK2)) ||   (((bit)>>5)==3 && (1UL<<((bit)&31) & REQUIRED_MASK3)) ||   (((bit)>>5)==4 && (1UL<<((bit)&31) & REQUIRED_MASK4)) ||   (((bit)>>5)==5 && (1UL<<((bit)&31) & REQUIRED_MASK5)) ||   (((bit)>>5)==6 && (1UL<<((bit)&31) & REQUIRED_MASK6)) ||   (((bit)>>5)==7 && (1UL<<((bit)&31) & REQUIRED_MASK7)) )   ? 1 :   test_bit(bit, (c)->x86_capability))
 #define boot_cpu_has(bit) cpu_has(&boot_cpu_data, bit)
-
 #define cpu_has_fpu boot_cpu_has(X86_FEATURE_FPU)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define cpu_has_vme boot_cpu_has(X86_FEATURE_VME)
 #define cpu_has_de boot_cpu_has(X86_FEATURE_DE)
 #define cpu_has_pse boot_cpu_has(X86_FEATURE_PSE)
 #define cpu_has_tsc boot_cpu_has(X86_FEATURE_TSC)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define cpu_has_pae boot_cpu_has(X86_FEATURE_PAE)
 #define cpu_has_pge boot_cpu_has(X86_FEATURE_PGE)
 #define cpu_has_apic boot_cpu_has(X86_FEATURE_APIC)
 #define cpu_has_sep boot_cpu_has(X86_FEATURE_SEP)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define cpu_has_mtrr boot_cpu_has(X86_FEATURE_MTRR)
 #define cpu_has_mmx boot_cpu_has(X86_FEATURE_MMX)
 #define cpu_has_fxsr boot_cpu_has(X86_FEATURE_FXSR)
 #define cpu_has_xmm boot_cpu_has(X86_FEATURE_XMM)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define cpu_has_xmm2 boot_cpu_has(X86_FEATURE_XMM2)
 #define cpu_has_xmm3 boot_cpu_has(X86_FEATURE_XMM3)
 #define cpu_has_ht boot_cpu_has(X86_FEATURE_HT)
 #define cpu_has_mp boot_cpu_has(X86_FEATURE_MP)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define cpu_has_nx boot_cpu_has(X86_FEATURE_NX)
 #define cpu_has_k6_mtrr boot_cpu_has(X86_FEATURE_K6_MTRR)
 #define cpu_has_cyrix_arr boot_cpu_has(X86_FEATURE_CYRIX_ARR)
 #define cpu_has_centaur_mcr boot_cpu_has(X86_FEATURE_CENTAUR_MCR)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define cpu_has_xstore boot_cpu_has(X86_FEATURE_XSTORE)
 #define cpu_has_xstore_enabled boot_cpu_has(X86_FEATURE_XSTORE_EN)
 #define cpu_has_xcrypt boot_cpu_has(X86_FEATURE_XCRYPT)
 #define cpu_has_xcrypt_enabled boot_cpu_has(X86_FEATURE_XCRYPT_EN)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define cpu_has_ace2 boot_cpu_has(X86_FEATURE_ACE2)
 #define cpu_has_ace2_enabled boot_cpu_has(X86_FEATURE_ACE2_EN)
 #define cpu_has_phe boot_cpu_has(X86_FEATURE_PHE)
 #define cpu_has_phe_enabled boot_cpu_has(X86_FEATURE_PHE_EN)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define cpu_has_pmm boot_cpu_has(X86_FEATURE_PMM)
 #define cpu_has_pmm_enabled boot_cpu_has(X86_FEATURE_PMM_EN)
 #define cpu_has_ds boot_cpu_has(X86_FEATURE_DS)
 #define cpu_has_pebs boot_cpu_has(X86_FEATURE_PEBS)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define cpu_has_clflush boot_cpu_has(X86_FEATURE_CLFLSH)
 #define cpu_has_bts boot_cpu_has(X86_FEATURE_BTS)
-
 #endif
-
diff --git a/libc/kernel/arch-x86/asm/cputime.h b/libc/kernel/arch-x86/asm/cputime.h
index 0e79e0b..5035a63 100644
--- a/libc/kernel/arch-x86/asm/cputime.h
+++ b/libc/kernel/arch-x86/asm/cputime.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include <asm-generic/cputime.h>
diff --git a/libc/kernel/arch-x86/asm/current.h b/libc/kernel/arch-x86/asm/current.h
index b53c6fe..c6b8b05 100644
--- a/libc/kernel/arch-x86/asm/current.h
+++ b/libc/kernel/arch-x86/asm/current.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "current_64.h"
diff --git a/libc/kernel/arch-x86/asm/current_32.h b/libc/kernel/arch-x86/asm/current_32.h
index f74b371..0882f79 100644
--- a/libc/kernel/arch-x86/asm/current_32.h
+++ b/libc/kernel/arch-x86/asm/current_32.h
@@ -7,15 +7,20 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _I386_CURRENT_H
 #define _I386_CURRENT_H
-
 #include <linux/compiler.h>
 #include <asm/percpu.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct task_struct;
-
 #define current get_current()
 #endif
diff --git a/libc/kernel/arch-x86/asm/delay.h b/libc/kernel/arch-x86/asm/delay.h
index 7cb5f74..455455a 100644
--- a/libc/kernel/arch-x86/asm/delay.h
+++ b/libc/kernel/arch-x86/asm/delay.h
@@ -7,13 +7,18 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_DELAY_H
 #define _ASM_X86_DELAY_H
-
 #define udelay(n) (__builtin_constant_p(n) ?   ((n) > 20000 ? __bad_udelay() : __const_udelay((n) * 0x10c7ul)) :   __udelay(n))
-
 #define ndelay(n) (__builtin_constant_p(n) ?   ((n) > 20000 ? __bad_ndelay() : __const_udelay((n) * 5ul)) :   __ndelay(n))
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/desc.h b/libc/kernel/arch-x86/asm/desc.h
index e9d448b..4566993 100644
--- a/libc/kernel/arch-x86/asm/desc.h
+++ b/libc/kernel/arch-x86/asm/desc.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "desc_64.h"
diff --git a/libc/kernel/arch-x86/asm/desc_32.h b/libc/kernel/arch-x86/asm/desc_32.h
index f53191c..bb98242 100644
--- a/libc/kernel/arch-x86/asm/desc_32.h
+++ b/libc/kernel/arch-x86/asm/desc_32.h
@@ -7,59 +7,70 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ARCH_DESC_H
 #define __ARCH_DESC_H
-
 #include <asm/ldt.h>
 #include <asm/segment.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #ifndef __ASSEMBLY__
-
 #include <linux/preempt.h>
 #include <linux/smp.h>
 #include <linux/percpu.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/mmu.h>
-
 struct Xgt_desc_struct {
  unsigned short size;
  unsigned long address __attribute__((packed));
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned short pad;
 } __attribute__ ((packed));
-
 struct gdt_page
 {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct desc_struct gdt[GDT_ENTRIES];
 } __attribute__((aligned(PAGE_SIZE)));
-
 #define DESCTYPE_LDT 0x82  
 #define DESCTYPE_TSS 0x89  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define DESCTYPE_TASK 0x85  
 #define DESCTYPE_INT 0x8e  
 #define DESCTYPE_TRAP 0x8f  
 #define DESCTYPE_DPL3 0x60  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define DESCTYPE_S 0x10  
 #define load_TR_desc() native_load_tr_desc()
 #define load_gdt(dtr) native_load_gdt(dtr)
 #define load_idt(dtr) native_load_idt(dtr)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define load_tr(tr) __asm__ __volatile("ltr %0"::"m" (tr))
 #define load_ldt(ldt) __asm__ __volatile("lldt %0"::"m" (ldt))
 #define store_gdt(dtr) native_store_gdt(dtr)
 #define store_idt(dtr) native_store_idt(dtr)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define store_tr(tr) (tr = native_store_tr())
 #define store_ldt(ldt) __asm__ ("sldt %0":"=m" (ldt))
 #define load_TLS(t, cpu) native_load_tls(t, cpu)
 #define set_ldt native_set_ldt
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define write_ldt_entry(dt, entry, a, b) write_dt_entry(dt, entry, a, b)
 #define write_gdt_entry(dt, entry, a, b) write_dt_entry(dt, entry, a, b)
 #define write_idt_entry(dt, entry, a, b) write_dt_entry(dt, entry, a, b)
 #define set_tss_desc(cpu,addr) __set_tss_desc(cpu, GDT_ENTRY_TSS, addr)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define LDT_entry_a(info)   ((((info)->base_addr & 0x0000ffff) << 16) | ((info)->limit & 0x0ffff))
 #define LDT_entry_b(info)   (((info)->base_addr & 0xff000000) |   (((info)->base_addr & 0x00ff0000) >> 16) |   ((info)->limit & 0xf0000) |   (((info)->read_exec_only ^ 1) << 9) |   ((info)->contents << 10) |   (((info)->seg_not_present ^ 1) << 15) |   ((info)->seg_32bit << 22) |   ((info)->limit_in_pages << 23) |   ((info)->useable << 20) |   0x7000)
 #define LDT_empty(info) (  (info)->base_addr == 0 &&   (info)->limit == 0 &&   (info)->contents == 0 &&   (info)->read_exec_only == 1 &&   (info)->seg_32bit == 0 &&   (info)->limit_in_pages == 0 &&   (info)->seg_not_present == 1 &&   (info)->useable == 0 )
 #else
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define GET_DESC_BASE(idx, gdt, base, lo_w, lo_b, hi_b)   movb idx*8+4(gdt), lo_b;   movb idx*8+7(gdt), hi_b;   shll $16, base;   movw idx*8+2(gdt), lo_w;
 #endif
 #endif
diff --git a/libc/kernel/arch-x86/asm/desc_defs.h b/libc/kernel/arch-x86/asm/desc_defs.h
index bf6de4a..32b46e1 100644
--- a/libc/kernel/arch-x86/asm/desc_defs.h
+++ b/libc/kernel/arch-x86/asm/desc_defs.h
@@ -7,64 +7,70 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ARCH_DESC_DEFS_H
 #define __ARCH_DESC_DEFS_H
-
 #ifndef __ASSEMBLY__
-
 #include <linux/types.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct desc_struct {
  u16 limit0;
  u16 base0;
  unsigned base1 : 8, type : 4, s : 1, dpl : 2, p : 1;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned limit : 4, avl : 1, l : 1, d : 1, g : 1, base2 : 8;
 } __attribute__((packed));
-
 struct n_desc_struct {
  unsigned int a,b;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 enum {
  GATE_INTERRUPT = 0xE,
  GATE_TRAP = 0xF,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  GATE_CALL = 0xC,
 };
-
 struct gate_struct {
  u16 offset_low;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  u16 segment;
  unsigned ist : 3, zero0 : 5, type : 5, dpl : 2, p : 1;
  u16 offset_middle;
  u32 offset_high;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  u32 zero1;
 } __attribute__((packed));
-
 #define PTR_LOW(x) ((unsigned long)(x) & 0xFFFF)
 #define PTR_MIDDLE(x) (((unsigned long)(x) >> 16) & 0xFFFF)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PTR_HIGH(x) ((unsigned long)(x) >> 32)
-
 enum {
  DESC_TSS = 0x9,
  DESC_LDT = 0x2,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 struct ldttss_desc {
  u16 limit0;
  u16 base0;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned base1 : 8, type : 5, dpl : 2, p : 1;
  unsigned limit1 : 4, zero0 : 3, g : 1, base2 : 8;
  u32 base3;
  u32 zero1;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 } __attribute__((packed));
-
 struct desc_ptr {
  unsigned short size;
  unsigned long address;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 } __attribute__((packed)) ;
-
 #endif
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/div64.h b/libc/kernel/arch-x86/asm/div64.h
index 3fef43e..8641ffa 100644
--- a/libc/kernel/arch-x86/asm/div64.h
+++ b/libc/kernel/arch-x86/asm/div64.h
@@ -7,11 +7,17 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_DIV64_H
 #define _ASM_X86_DIV64_H
-
 #include <asm-generic/div64.h>
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/dma-mapping.h b/libc/kernel/arch-x86/asm/dma-mapping.h
index 3da1da6..5e4666c 100644
--- a/libc/kernel/arch-x86/asm/dma-mapping.h
+++ b/libc/kernel/arch-x86/asm/dma-mapping.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "dma-mapping_64.h"
diff --git a/libc/kernel/arch-x86/asm/dma-mapping_32.h b/libc/kernel/arch-x86/asm/dma-mapping_32.h
index 974a60b..6b41adf 100644
--- a/libc/kernel/arch-x86/asm/dma-mapping_32.h
+++ b/libc/kernel/arch-x86/asm/dma-mapping_32.h
@@ -7,22 +7,27 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_I386_DMA_MAPPING_H
 #define _ASM_I386_DMA_MAPPING_H
-
 #include <linux/mm.h>
 #include <linux/scatterlist.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/cache.h>
 #include <asm/io.h>
 #include <asm/bug.h>
-
 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
-
 #define dma_is_consistent(d, h) (1)
 #define ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/dma.h b/libc/kernel/arch-x86/asm/dma.h
index ae51e02..33baa8e 100644
--- a/libc/kernel/arch-x86/asm/dma.h
+++ b/libc/kernel/arch-x86/asm/dma.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "dma_64.h"
diff --git a/libc/kernel/arch-x86/asm/dma_32.h b/libc/kernel/arch-x86/asm/dma_32.h
index 9c24f5e..8b77878 100644
--- a/libc/kernel/arch-x86/asm/dma_32.h
+++ b/libc/kernel/arch-x86/asm/dma_32.h
@@ -7,84 +7,92 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_DMA_H
 #define _ASM_DMA_H
-
 #include <linux/spinlock.h>  
 #include <asm/io.h>  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <linux/delay.h>
-
 #ifdef HAVE_REALLY_SLOW_DMA_CONTROLLER
 #define dma_outb outb_p
 #else
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define dma_outb outb
 #endif
-
 #define dma_inb inb
-
 #define MAX_DMA_CHANNELS 8
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MAX_DMA_ADDRESS (PAGE_OFFSET+0x1000000)
-
 #define IO_DMA1_BASE 0x00  
 #define IO_DMA2_BASE 0xC0  
-
 #define DMA1_CMD_REG 0x08  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define DMA1_STAT_REG 0x08  
 #define DMA1_REQ_REG 0x09  
 #define DMA1_MASK_REG 0x0A  
 #define DMA1_MODE_REG 0x0B  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define DMA1_CLEAR_FF_REG 0x0C  
 #define DMA1_TEMP_REG 0x0D  
 #define DMA1_RESET_REG 0x0D  
 #define DMA1_CLR_MASK_REG 0x0E  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define DMA1_MASK_ALL_REG 0x0F  
-
 #define DMA2_CMD_REG 0xD0  
 #define DMA2_STAT_REG 0xD0  
 #define DMA2_REQ_REG 0xD2  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define DMA2_MASK_REG 0xD4  
 #define DMA2_MODE_REG 0xD6  
 #define DMA2_CLEAR_FF_REG 0xD8  
 #define DMA2_TEMP_REG 0xDA  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define DMA2_RESET_REG 0xDA  
 #define DMA2_CLR_MASK_REG 0xDC  
 #define DMA2_MASK_ALL_REG 0xDE  
-
 #define DMA_ADDR_0 0x00  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define DMA_ADDR_1 0x02
 #define DMA_ADDR_2 0x04
 #define DMA_ADDR_3 0x06
 #define DMA_ADDR_4 0xC0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define DMA_ADDR_5 0xC4
 #define DMA_ADDR_6 0xC8
 #define DMA_ADDR_7 0xCC
-
 #define DMA_CNT_0 0x01  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define DMA_CNT_1 0x03
 #define DMA_CNT_2 0x05
 #define DMA_CNT_3 0x07
 #define DMA_CNT_4 0xC2
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define DMA_CNT_5 0xC6
 #define DMA_CNT_6 0xCA
 #define DMA_CNT_7 0xCE
-
 #define DMA_PAGE_0 0x87  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define DMA_PAGE_1 0x83
 #define DMA_PAGE_2 0x81
 #define DMA_PAGE_3 0x82
 #define DMA_PAGE_5 0x8B
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define DMA_PAGE_6 0x89
 #define DMA_PAGE_7 0x8A
-
 #define DMA_MODE_READ 0x44  
 #define DMA_MODE_WRITE 0x48  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define DMA_MODE_CASCADE 0xC0  
-
 #define DMA_AUTOINIT 0x10
-
 #define isa_dma_bridge_buggy (0)
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/dwarf2.h b/libc/kernel/arch-x86/asm/dwarf2.h
index c937591..52c5bf7 100644
--- a/libc/kernel/arch-x86/asm/dwarf2.h
+++ b/libc/kernel/arch-x86/asm/dwarf2.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "dwarf2_64.h"
diff --git a/libc/kernel/arch-x86/asm/dwarf2_32.h b/libc/kernel/arch-x86/asm/dwarf2_32.h
index a2dc3f1..0ec1650 100644
--- a/libc/kernel/arch-x86/asm/dwarf2_32.h
+++ b/libc/kernel/arch-x86/asm/dwarf2_32.h
@@ -7,27 +7,37 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _DWARF2_H
 #define _DWARF2_H
-
 #ifndef __ASSEMBLY__
 #warning "asm/dwarf2.h should be only included in pure assembly files"
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
-
 #define CFI_STARTPROC ignore
 #define CFI_ENDPROC ignore
 #define CFI_DEF_CFA ignore
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CFI_DEF_CFA_REGISTER ignore
 #define CFI_DEF_CFA_OFFSET ignore
 #define CFI_ADJUST_CFA_OFFSET ignore
 #define CFI_OFFSET ignore
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CFI_REL_OFFSET ignore
 #define CFI_REGISTER ignore
 #define CFI_RESTORE ignore
 #define CFI_REMEMBER_STATE ignore
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CFI_RESTORE_STATE ignore
 #define CFI_UNDEFINED ignore
 #define CFI_SIGNAL_FRAME ignore
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/e820.h b/libc/kernel/arch-x86/asm/e820.h
index 8a88ff0..08d5af9 100644
--- a/libc/kernel/arch-x86/asm/e820.h
+++ b/libc/kernel/arch-x86/asm/e820.h
@@ -7,30 +7,38 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ASM_E820_H
 #define __ASM_E820_H
 #define E820MAP 0x2d0  
 #define E820MAX 128  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define E820NR 0x1e8  
-
 #define E820_RAM 1
 #define E820_RESERVED 2
 #define E820_ACPI 3
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define E820_NVS 4
-
 #ifndef __ASSEMBLY__
 struct e820entry {
  __u64 addr;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u64 size;
  __u32 type;
 } __attribute__((packed));
-
 struct e820map {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u32 nr_map;
  struct e820entry map[E820MAX];
 };
 #endif
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/elf.h b/libc/kernel/arch-x86/asm/elf.h
index 6c6fbbf..ac01942 100644
--- a/libc/kernel/arch-x86/asm/elf.h
+++ b/libc/kernel/arch-x86/asm/elf.h
@@ -7,68 +7,73 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_ELF_H
 #define _ASM_X86_ELF_H
-
 #include <asm/ptrace.h>
 #include <asm/user.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/auxvec.h>
-
 typedef unsigned long elf_greg_t;
-
 #define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t))
 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef struct user_i387_struct elf_fpregset_t;
-
 #ifdef __i386__
-
 typedef struct user_fxsr_struct elf_fpxregset_t;
-
 #define R_386_NONE 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define R_386_32 1
 #define R_386_PC32 2
 #define R_386_GOT32 3
 #define R_386_PLT32 4
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define R_386_COPY 5
 #define R_386_GLOB_DAT 6
 #define R_386_JMP_SLOT 7
 #define R_386_RELATIVE 8
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define R_386_GOTOFF 9
 #define R_386_GOTPC 10
 #define R_386_NUM 11
-
 #define ELF_CLASS ELFCLASS32
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ELF_DATA ELFDATA2LSB
 #define ELF_ARCH EM_386
-
 #else
-
 #define R_X86_64_NONE 0  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define R_X86_64_64 1  
 #define R_X86_64_PC32 2  
 #define R_X86_64_GOT32 3  
 #define R_X86_64_PLT32 4  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define R_X86_64_COPY 5  
 #define R_X86_64_GLOB_DAT 6  
 #define R_X86_64_JUMP_SLOT 7  
 #define R_X86_64_RELATIVE 8  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define R_X86_64_GOTPCREL 9  
 #define R_X86_64_32 10  
 #define R_X86_64_32S 11  
 #define R_X86_64_16 12  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define R_X86_64_PC16 13  
 #define R_X86_64_8 14  
 #define R_X86_64_PC8 15  
-
 #define R_X86_64_NUM 16
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ELF_CLASS ELFCLASS64
 #define ELF_DATA ELFDATA2LSB
 #define ELF_ARCH EM_X86_64
-
 #endif
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/errno.h b/libc/kernel/arch-x86/asm/errno.h
index e8f7425..392cd94 100644
--- a/libc/kernel/arch-x86/asm/errno.h
+++ b/libc/kernel/arch-x86/asm/errno.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include <asm-generic/errno.h>
diff --git a/libc/kernel/arch-x86/asm/fcntl.h b/libc/kernel/arch-x86/asm/fcntl.h
index 00630ad..518d3a7 100644
--- a/libc/kernel/arch-x86/asm/fcntl.h
+++ b/libc/kernel/arch-x86/asm/fcntl.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include <asm-generic/fcntl.h>
diff --git a/libc/kernel/arch-x86/asm/fixmap.h b/libc/kernel/arch-x86/asm/fixmap.h
index 19b9cc8..363f5a3 100644
--- a/libc/kernel/arch-x86/asm/fixmap.h
+++ b/libc/kernel/arch-x86/asm/fixmap.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "fixmap_64.h"
diff --git a/libc/kernel/arch-x86/asm/fixmap_32.h b/libc/kernel/arch-x86/asm/fixmap_32.h
index 95de8a0..94a20a6 100644
--- a/libc/kernel/arch-x86/asm/fixmap_32.h
+++ b/libc/kernel/arch-x86/asm/fixmap_32.h
@@ -7,49 +7,53 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_FIXMAP_H
 #define _ASM_FIXMAP_H
-
 #define FIXADDR_USER_START __fix_to_virt(FIX_VDSO)
 #define FIXADDR_USER_END __fix_to_virt(FIX_VDSO - 1)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #ifndef __ASSEMBLY__
 #include <linux/kernel.h>
 #include <asm/acpi.h>
 #include <asm/apicdef.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/page.h>
-
 enum fixed_addresses {
  FIX_HOLE,
  FIX_VDSO,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  FIX_DBGP_BASE,
  FIX_EARLYCON_MEM_BASE,
  __end_of_permanent_fixed_addresses,
-
 #define NR_FIX_BTMAPS 16
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  FIX_BTMAP_END = __end_of_permanent_fixed_addresses,
  FIX_BTMAP_BEGIN = FIX_BTMAP_END + NR_FIX_BTMAPS - 1,
  FIX_WP_TEST,
  __end_of_fixed_addresses
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 #define set_fixmap(idx, phys)   __set_fixmap(idx, phys, PAGE_KERNEL)
-
 #define set_fixmap_nocache(idx, phys)   __set_fixmap(idx, phys, PAGE_KERNEL_NOCACHE)
-
 #define clear_fixmap(idx)   __set_fixmap(idx, 0, __pgprot(0))
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FIXADDR_TOP ((unsigned long)__FIXADDR_TOP)
-
 #define __FIXADDR_SIZE (__end_of_permanent_fixed_addresses << PAGE_SHIFT)
 #define __FIXADDR_BOOT_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
 #define FIXADDR_START (FIXADDR_TOP - __FIXADDR_SIZE)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FIXADDR_BOOT_START (FIXADDR_TOP - __FIXADDR_BOOT_SIZE)
-
 #define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT))
 #define __virt_to_fix(x) ((FIXADDR_TOP - ((x)&PAGE_MASK)) >> PAGE_SHIFT)
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/genapic.h b/libc/kernel/arch-x86/asm/genapic.h
index 84e687e..9f9e505 100644
--- a/libc/kernel/arch-x86/asm/genapic.h
+++ b/libc/kernel/arch-x86/asm/genapic.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "genapic_64.h"
diff --git a/libc/kernel/arch-x86/asm/genapic_32.h b/libc/kernel/arch-x86/asm/genapic_32.h
index 07801ea..89a68b3 100644
--- a/libc/kernel/arch-x86/asm/genapic_32.h
+++ b/libc/kernel/arch-x86/asm/genapic_32.h
@@ -7,67 +7,73 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_GENAPIC_H
 #define _ASM_GENAPIC_H 1
-
 #include <asm/mpspec.h>
-
 struct mpc_config_translation;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct mpc_config_bus;
 struct mp_config_table;
 struct mpc_config_processor;
-
 struct genapic {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  char *name;
  int (*probe)(void);
-
  int (*apic_id_registered)(void);
  cpumask_t (*target_cpus)(void);
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  int int_delivery_mode;
  int int_dest_mode;
  int ESR_DISABLE;
  int apic_destination_logical;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long (*check_apicid_used)(physid_mask_t bitmap, int apicid);
  unsigned long (*check_apicid_present)(int apicid);
  int no_balance_irq;
  int no_ioapic_check;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  void (*init_apic_ldr)(void);
  physid_mask_t (*ioapic_phys_id_map)(physid_mask_t map);
-
  void (*setup_apic_routing)(void);
  int (*multi_timer_check)(int apic, int irq);
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  int (*apicid_to_node)(int logical_apicid);
  int (*cpu_to_logical_apicid)(int cpu);
  int (*cpu_present_to_apicid)(int mps_cpu);
  physid_mask_t (*apicid_to_cpu_present)(int phys_apicid);
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  int (*mpc_apic_id)(struct mpc_config_processor *m,
  struct mpc_config_translation *t);
  void (*setup_portio_remap)(void);
  int (*check_phys_apicid_present)(int boot_cpu_physical_apicid);
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  void (*enable_apic_mode)(void);
  u32 (*phys_pkg_id)(u32 cpuid_apic, int index_msb);
-
  void (*mpc_oem_bus_info)(struct mpc_config_bus *, char *,
  struct mpc_config_translation *);
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  void (*mpc_oem_pci_bus)(struct mpc_config_bus *,
  struct mpc_config_translation *);
-
  int (*mps_oem_check)(struct mp_config_table *mpc, char *oem,
  char *productid);
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  int (*acpi_madt_oem_check)(char *oem_id, char *oem_table_id);
-
  unsigned (*get_apic_id)(unsigned long x);
  unsigned long apic_id_mask;
  unsigned int (*cpu_mask_to_apicid)(cpumask_t cpumask);
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 #define APICFUNC(x) .x = x,
-
 #define IPIFUNC(x)
-
 #define APIC_INIT(aname, aprobe) {   .name = aname,   .probe = aprobe,   .int_delivery_mode = INT_DELIVERY_MODE,   .int_dest_mode = INT_DEST_MODE,   .no_balance_irq = NO_BALANCE_IRQ,   .ESR_DISABLE = esr_disable,   .apic_destination_logical = APIC_DEST_LOGICAL,   APICFUNC(apic_id_registered)   APICFUNC(target_cpus)   APICFUNC(check_apicid_used)   APICFUNC(check_apicid_present)   APICFUNC(init_apic_ldr)   APICFUNC(ioapic_phys_id_map)   APICFUNC(setup_apic_routing)   APICFUNC(multi_timer_check)   APICFUNC(apicid_to_node)   APICFUNC(cpu_to_logical_apicid)   APICFUNC(cpu_present_to_apicid)   APICFUNC(apicid_to_cpu_present)   APICFUNC(mpc_apic_id)   APICFUNC(setup_portio_remap)   APICFUNC(check_phys_apicid_present)   APICFUNC(mpc_oem_bus_info)   APICFUNC(mpc_oem_pci_bus)   APICFUNC(mps_oem_check)   APICFUNC(get_apic_id)   .apic_id_mask = APIC_ID_MASK,   APICFUNC(cpu_mask_to_apicid)   APICFUNC(acpi_madt_oem_check)   IPIFUNC(send_IPI_mask)   IPIFUNC(send_IPI_allbutself)   IPIFUNC(send_IPI_all)   APICFUNC(enable_apic_mode)   APICFUNC(phys_pkg_id)   }
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/hardirq.h b/libc/kernel/arch-x86/asm/hardirq.h
index ee224f1..c8c4e65 100644
--- a/libc/kernel/arch-x86/asm/hardirq.h
+++ b/libc/kernel/arch-x86/asm/hardirq.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "hardirq_64.h"
diff --git a/libc/kernel/arch-x86/asm/hardirq_32.h b/libc/kernel/arch-x86/asm/hardirq_32.h
index b682f66..c1ee64f 100644
--- a/libc/kernel/arch-x86/asm/hardirq_32.h
+++ b/libc/kernel/arch-x86/asm/hardirq_32.h
@@ -7,30 +7,37 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ASM_HARDIRQ_H
 #define __ASM_HARDIRQ_H
-
 #include <linux/threads.h>
 #include <linux/irq.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef struct {
  unsigned int __softirq_pending;
  unsigned long idle_timestamp;
  unsigned int __nmi_count;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int apic_timer_irqs;
  unsigned int irq0_irqs;
  unsigned int irq_resched_count;
  unsigned int irq_call_count;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int irq_tlb_count;
  unsigned int irq_thermal_count;
  unsigned int irq_spurious_count;
 } ____cacheline_aligned irq_cpustat_t;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __ARCH_IRQ_STAT
 #define __IRQ_STAT(cpu, member) (per_cpu(irq_stat, cpu).member)
-
 #include <linux/irq_cpustat.h>
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/highmem.h b/libc/kernel/arch-x86/asm/highmem.h
index f738851..c669819 100644
--- a/libc/kernel/arch-x86/asm/highmem.h
+++ b/libc/kernel/arch-x86/asm/highmem.h
@@ -7,9 +7,15 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_HIGHMEM_H
 #define _ASM_HIGHMEM_H
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/hw_irq.h b/libc/kernel/arch-x86/asm/hw_irq.h
index ed937c7..eb2a64a 100644
--- a/libc/kernel/arch-x86/asm/hw_irq.h
+++ b/libc/kernel/arch-x86/asm/hw_irq.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "hw_irq_64.h"
diff --git a/libc/kernel/arch-x86/asm/hw_irq_32.h b/libc/kernel/arch-x86/asm/hw_irq_32.h
index 6f584fc..44fcd47 100644
--- a/libc/kernel/arch-x86/asm/hw_irq_32.h
+++ b/libc/kernel/arch-x86/asm/hw_irq_32.h
@@ -7,18 +7,23 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_HW_IRQ_H
 #define _ASM_HW_IRQ_H
-
 #include <linux/profile.h>
 #include <asm/atomic.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/irq.h>
 #include <asm/sections.h>
-
 #define NMI_VECTOR 0x02
-
 #define IO_APIC_IRQ(x) (((x) >= 16) || ((1<<(x)) & io_apic_irqs))
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/i387.h b/libc/kernel/arch-x86/asm/i387.h
index 2692557..07d579d 100644
--- a/libc/kernel/arch-x86/asm/i387.h
+++ b/libc/kernel/arch-x86/asm/i387.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "i387_64.h"
diff --git a/libc/kernel/arch-x86/asm/i387_32.h b/libc/kernel/arch-x86/asm/i387_32.h
index 8563fb9..4543da5 100644
--- a/libc/kernel/arch-x86/asm/i387_32.h
+++ b/libc/kernel/arch-x86/asm/i387_32.h
@@ -7,27 +7,32 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ASM_I386_I387_H
 #define __ASM_I386_I387_H
-
 #include <linux/sched.h>
 #include <linux/init.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <linux/kernel_stat.h>
 #include <asm/processor.h>
 #include <asm/sigcontext.h>
 #include <asm/user.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define restore_fpu(tsk)   alternative_input(   "nop ; frstor %1",   "fxrstor %1",   X86_FEATURE_FXSR,   "m" ((tsk)->thread.i387.fxsave))
-
 #define kernel_fpu_end() do { stts(); preempt_enable(); } while(0)
-
 #define safe_address (kstat_cpu(0).cpustat.user)
-
 #define __unlazy_fpu( tsk ) do {   if (task_thread_info(tsk)->status & TS_USEDFPU) {   __save_init_fpu(tsk);   stts();   } else   tsk->fpu_counter = 0;  } while (0)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __clear_fpu( tsk )  do {   if (task_thread_info(tsk)->status & TS_USEDFPU) {   asm volatile("fnclex ; fwait");   task_thread_info(tsk)->status &= ~TS_USEDFPU;   stts();   }  } while (0)
 #define unlazy_fpu( tsk ) do {   preempt_disable();   __unlazy_fpu(tsk);   preempt_enable();  } while (0)
 #define clear_fpu( tsk ) do {   preempt_disable();   __clear_fpu( tsk );   preempt_enable();  } while (0)
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/i8253.h b/libc/kernel/arch-x86/asm/i8253.h
index 93b1d1a..576a356 100644
--- a/libc/kernel/arch-x86/asm/i8253.h
+++ b/libc/kernel/arch-x86/asm/i8253.h
@@ -7,13 +7,19 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ASM_I8253_H__
 #define __ASM_I8253_H__
-
 #define PIT_MODE 0x43
 #define PIT_CH0 0x40
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PIT_CH2 0x42
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/i8259.h b/libc/kernel/arch-x86/asm/i8259.h
index c2366ea..dc7e786 100644
--- a/libc/kernel/arch-x86/asm/i8259.h
+++ b/libc/kernel/arch-x86/asm/i8259.h
@@ -7,13 +7,19 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ASM_I8259_H__
 #define __ASM_I8259_H__
-
 #define __byte(x,y) (((unsigned char *) &(y))[x])
 #define cached_master_mask (__byte(0, cached_irq_mask))
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define cached_slave_mask (__byte(1, cached_irq_mask))
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/ia32_unistd.h b/libc/kernel/arch-x86/asm/ia32_unistd.h
index 848d228..2cb53d0 100644
--- a/libc/kernel/arch-x86/asm/ia32_unistd.h
+++ b/libc/kernel/arch-x86/asm/ia32_unistd.h
@@ -7,16 +7,23 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_64_IA32_UNISTD_H_
 #define _ASM_X86_64_IA32_UNISTD_H_
-
 #define __NR_ia32_restart_syscall 0
 #define __NR_ia32_exit 1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_ia32_read 3
 #define __NR_ia32_write 4
 #define __NR_ia32_sigreturn 119
 #define __NR_ia32_rt_sigreturn 173
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/io.h b/libc/kernel/arch-x86/asm/io.h
index ea52e66..11f4db4 100644
--- a/libc/kernel/arch-x86/asm/io.h
+++ b/libc/kernel/arch-x86/asm/io.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "io_64.h"
diff --git a/libc/kernel/arch-x86/asm/io_32.h b/libc/kernel/arch-x86/asm/io_32.h
index f7e0025..e0615be 100644
--- a/libc/kernel/arch-x86/asm/io_32.h
+++ b/libc/kernel/arch-x86/asm/io_32.h
@@ -7,21 +7,27 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_IO_H
 #define _ASM_IO_H
-
 #include <linux/string.h>
 #include <linux/compiler.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IO_SPACE_LIMIT 0xffff
-
 #define XQUAD_PORTIO_BASE 0xfe400000
 #define XQUAD_PORTIO_QUAD 0x40000  
-
 #ifdef REALLY_SLOW_IO
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
 #define __BUILDIO(bwl,bw,type)  static inline void out##bwl(unsigned type value, int port) {   out##bwl##_local(value, port);  }  static inline unsigned type in##bwl(int port) {   return in##bwl##_local(port);  }
 #define BUILDIO(bwl,bw,type)  static inline void out##bwl##_local(unsigned type value, int port) {   __asm__ __volatile__("out" #bwl " %" #bw "0, %w1" : : "a"(value), "Nd"(port));  }  static inline unsigned type in##bwl##_local(int port) {   unsigned type value;   __asm__ __volatile__("in" #bwl " %w1, %" #bw "0" : "=a"(value) : "Nd"(port));   return value;  }  static inline void out##bwl##_local_p(unsigned type value, int port) {   out##bwl##_local(value, port);   slow_down_io();  }  static inline unsigned type in##bwl##_local_p(int port) {   unsigned type value = in##bwl##_local(port);   slow_down_io();   return value;  }  __BUILDIO(bwl,bw,type)  static inline void out##bwl##_p(unsigned type value, int port) {   out##bwl(value, port);   slow_down_io();  }  static inline unsigned type in##bwl##_p(int port) {   unsigned type value = in##bwl(port);   slow_down_io();   return value;  }  static inline void outs##bwl(int port, const void *addr, unsigned long count) {   __asm__ __volatile__("rep; outs" #bwl : "+S"(addr), "+c"(count) : "d"(port));  }  static inline void ins##bwl(int port, void *addr, unsigned long count) {   __asm__ __volatile__("rep; ins" #bwl : "+D"(addr), "+c"(count) : "d"(port));  }
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/io_apic.h b/libc/kernel/arch-x86/asm/io_apic.h
index ed608d3..03630cf 100644
--- a/libc/kernel/arch-x86/asm/io_apic.h
+++ b/libc/kernel/arch-x86/asm/io_apic.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "io_apic_64.h"
diff --git a/libc/kernel/arch-x86/asm/io_apic_32.h b/libc/kernel/arch-x86/asm/io_apic_32.h
index cc858a3..1cd4401 100644
--- a/libc/kernel/arch-x86/asm/io_apic_32.h
+++ b/libc/kernel/arch-x86/asm/io_apic_32.h
@@ -7,90 +7,103 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ASM_IO_APIC_H
 #define __ASM_IO_APIC_H
-
 #include <asm/types.h>
 #include <asm/mpspec.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/apicdef.h>
-
 union IO_APIC_reg_00 {
  u32 raw;
  struct {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  u32 __reserved_2 : 14,
  LTS : 1,
  delivery_type : 1,
  __reserved_1 : 8,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  ID : 8;
  } __attribute__ ((packed)) bits;
 };
-
 union IO_APIC_reg_01 {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  u32 raw;
  struct {
  u32 version : 8,
  __reserved_2 : 7,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  PRQ : 1,
  entries : 8,
  __reserved_1 : 8;
  } __attribute__ ((packed)) bits;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 union IO_APIC_reg_02 {
  u32 raw;
  struct {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  u32 __reserved_2 : 24,
  arbitration : 4,
  __reserved_1 : 4;
  } __attribute__ ((packed)) bits;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 union IO_APIC_reg_03 {
  u32 raw;
  struct {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  u32 boot_DT : 1,
  __reserved_1 : 31;
  } __attribute__ ((packed)) bits;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 enum ioapic_irq_destination_types {
  dest_Fixed = 0,
  dest_LowestPrio = 1,
  dest_SMI = 2,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  dest__reserved_1 = 3,
  dest_NMI = 4,
  dest_INIT = 5,
  dest__reserved_2 = 6,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  dest_ExtINT = 7
 };
-
 struct IO_APIC_route_entry {
  __u32 vector : 8,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  delivery_mode : 3,
  dest_mode : 1,
  delivery_status : 1,
  polarity : 1,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  irr : 1,
  trigger : 1,
  mask : 1,
  __reserved_2 : 15;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  union { struct { __u32
  __reserved_1 : 24,
  physical_dest : 4,
  __reserved_2 : 4;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  } physical;
-
  struct { __u32
  __reserved_1 : 24,
  logical_dest : 8;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  } logical;
  } dest;
-
 } __attribute__ ((packed));
-
 #define io_apic_assign_pci_irqs 0
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/ioctl.h b/libc/kernel/arch-x86/asm/ioctl.h
index 6e446b6..7b7bd37 100644
--- a/libc/kernel/arch-x86/asm/ioctl.h
+++ b/libc/kernel/arch-x86/asm/ioctl.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include <asm-generic/ioctl.h>
diff --git a/libc/kernel/arch-x86/asm/ioctls.h b/libc/kernel/arch-x86/asm/ioctls.h
index 3aedc04..9eccb2b 100644
--- a/libc/kernel/arch-x86/asm/ioctls.h
+++ b/libc/kernel/arch-x86/asm/ioctls.h
@@ -7,89 +7,107 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_IOCTLS_H
 #define _ASM_X86_IOCTLS_H
-
 #include <asm/ioctl.h>
-
 #define TCGETS 0x5401
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TCSETS 0x5402  
 #define TCSETSW 0x5403
 #define TCSETSF 0x5404
 #define TCGETA 0x5405
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TCSETA 0x5406
 #define TCSETAW 0x5407
 #define TCSETAF 0x5408
 #define TCSBRK 0x5409
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TCXONC 0x540A
 #define TCFLSH 0x540B
 #define TIOCEXCL 0x540C
 #define TIOCNXCL 0x540D
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TIOCSCTTY 0x540E
 #define TIOCGPGRP 0x540F
 #define TIOCSPGRP 0x5410
 #define TIOCOUTQ 0x5411
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TIOCSTI 0x5412
 #define TIOCGWINSZ 0x5413
 #define TIOCSWINSZ 0x5414
 #define TIOCMGET 0x5415
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TIOCMBIS 0x5416
 #define TIOCMBIC 0x5417
 #define TIOCMSET 0x5418
 #define TIOCGSOFTCAR 0x5419
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TIOCSSOFTCAR 0x541A
 #define FIONREAD 0x541B
 #define TIOCINQ FIONREAD
 #define TIOCLINUX 0x541C
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TIOCCONS 0x541D
 #define TIOCGSERIAL 0x541E
 #define TIOCSSERIAL 0x541F
 #define TIOCPKT 0x5420
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FIONBIO 0x5421
 #define TIOCNOTTY 0x5422
 #define TIOCSETD 0x5423
 #define TIOCGETD 0x5424
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TCSBRKP 0x5425  
-
 #define TIOCSBRK 0x5427  
 #define TIOCCBRK 0x5428  
 #define TIOCGSID 0x5429  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TCGETS2 _IOR('T',0x2A, struct termios2)
 #define TCSETS2 _IOW('T',0x2B, struct termios2)
 #define TCSETSW2 _IOW('T',0x2C, struct termios2)
 #define TCSETSF2 _IOW('T',0x2D, struct termios2)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TIOCGPTN _IOR('T',0x30, unsigned int)  
 #define TIOCSPTLCK _IOW('T',0x31, int)  
-
 #define FIONCLEX 0x5450
 #define FIOCLEX 0x5451
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FIOASYNC 0x5452
 #define TIOCSERCONFIG 0x5453
 #define TIOCSERGWILD 0x5454
 #define TIOCSERSWILD 0x5455
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TIOCGLCKTRMIOS 0x5456
 #define TIOCSLCKTRMIOS 0x5457
 #define TIOCSERGSTRUCT 0x5458  
 #define TIOCSERGETLSR 0x5459  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TIOCSERGETMULTI 0x545A  
 #define TIOCSERSETMULTI 0x545B  
-
 #define TIOCMIWAIT 0x545C  
 #define TIOCGICOUNT 0x545D  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TIOCGHAYESESP 0x545E  
 #define TIOCSHAYESESP 0x545F  
 #define FIOQSIZE 0x5460
-
 #define TIOCPKT_DATA 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TIOCPKT_FLUSHREAD 1
 #define TIOCPKT_FLUSHWRITE 2
 #define TIOCPKT_STOP 4
 #define TIOCPKT_START 8
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TIOCPKT_NOSTOP 16
 #define TIOCPKT_DOSTOP 32
-
 #define TIOCSER_TEMT 0x01  
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/ipcbuf.h b/libc/kernel/arch-x86/asm/ipcbuf.h
index 32342c1..83dc12f 100644
--- a/libc/kernel/arch-x86/asm/ipcbuf.h
+++ b/libc/kernel/arch-x86/asm/ipcbuf.h
@@ -7,24 +7,33 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_IPCBUF_H
 #define _ASM_X86_IPCBUF_H
-
 struct ipc64_perm
 {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __kernel_key_t key;
  __kernel_uid32_t uid;
  __kernel_gid32_t gid;
  __kernel_uid32_t cuid;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __kernel_gid32_t cgid;
  __kernel_mode_t mode;
  unsigned short __pad1;
  unsigned short seq;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned short __pad2;
  unsigned long __unused1;
  unsigned long __unused2;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/irq.h b/libc/kernel/arch-x86/asm/irq.h
index 07a331d..d6e0493 100644
--- a/libc/kernel/arch-x86/asm/irq.h
+++ b/libc/kernel/arch-x86/asm/irq.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "irq_64.h"
diff --git a/libc/kernel/arch-x86/asm/irq_32.h b/libc/kernel/arch-x86/asm/irq_32.h
index 3141071..1d7fab6 100644
--- a/libc/kernel/arch-x86/asm/irq_32.h
+++ b/libc/kernel/arch-x86/asm/irq_32.h
@@ -7,17 +7,22 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_IRQ_H
 #define _ASM_IRQ_H
-
 #include <linux/sched.h>
-
 #include "irq_vectors.h"
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/thread_info.h>
-
 #define irq_ctx_init(cpu) do { } while (0)
 #define irq_ctx_exit(cpu) do { } while (0)
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/irqflags.h b/libc/kernel/arch-x86/asm/irqflags.h
index 4f84662..872a942 100644
--- a/libc/kernel/arch-x86/asm/irqflags.h
+++ b/libc/kernel/arch-x86/asm/irqflags.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "irqflags_64.h"
diff --git a/libc/kernel/arch-x86/asm/irqflags_32.h b/libc/kernel/arch-x86/asm/irqflags_32.h
index 9002e44..9d77264 100644
--- a/libc/kernel/arch-x86/asm/irqflags_32.h
+++ b/libc/kernel/arch-x86/asm/irqflags_32.h
@@ -7,27 +7,38 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_IRQFLAGS_H
 #define _ASM_IRQFLAGS_H
 #include <asm/processor-flags.h>
-
 #ifndef __ASSEMBLY__
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
 #ifndef __ASSEMBLY__
 #else
 #define DISABLE_INTERRUPTS(clobbers) cli
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ENABLE_INTERRUPTS(clobbers) sti
 #define ENABLE_INTERRUPTS_SYSEXIT sti; sysexit
 #define INTERRUPT_RETURN iret
 #define GET_CR0_INTO_EAX movl %cr0, %eax
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
 #ifndef __ASSEMBLY__
 #define raw_local_save_flags(flags)   do { (flags) = __raw_local_save_flags(); } while (0)
 #define raw_local_irq_save(flags)   do { (flags) = __raw_local_irq_save(); } while (0)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
 #define TRACE_IRQS_ON
 #define TRACE_IRQS_OFF
 #define LOCKDEP_SYS_EXIT
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/ist.h b/libc/kernel/arch-x86/asm/ist.h
index 0abab19..0349bd3 100644
--- a/libc/kernel/arch-x86/asm/ist.h
+++ b/libc/kernel/arch-x86/asm/ist.h
@@ -7,18 +7,24 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_IST_H
 #define _ASM_IST_H
-
 #include <linux/types.h>
-
 struct ist_info {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u32 signature;
  __u32 command;
  __u32 event;
  __u32 perf_level;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/kmap_types.h b/libc/kernel/arch-x86/asm/kmap_types.h
index c2313ee..ba6af93 100644
--- a/libc/kernel/arch-x86/asm/kmap_types.h
+++ b/libc/kernel/arch-x86/asm/kmap_types.h
@@ -7,30 +7,38 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_KMAP_TYPES_H
 #define _ASM_X86_KMAP_TYPES_H
-
 #define D(n)
-
 enum km_type {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 D(0) KM_BOUNCE_READ,
 D(1) KM_SKB_SUNRPC_DATA,
 D(2) KM_SKB_DATA_SOFTIRQ,
 D(3) KM_USER0,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 D(4) KM_USER1,
 D(5) KM_BIO_SRC_IRQ,
 D(6) KM_BIO_DST_IRQ,
 D(7) KM_PTE0,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 D(8) KM_PTE1,
 D(9) KM_IRQ0,
 D(10) KM_IRQ1,
 D(11) KM_SOFTIRQ0,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 D(12) KM_SOFTIRQ1,
 D(13) KM_TYPE_NR
 };
-
 #undef D
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/ldt.h b/libc/kernel/arch-x86/asm/ldt.h
index 19b91ab..ff88760 100644
--- a/libc/kernel/arch-x86/asm/ldt.h
+++ b/libc/kernel/arch-x86/asm/ldt.h
@@ -7,35 +7,42 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_LDT_H
 #define _ASM_X86_LDT_H
-
 #define LDT_ENTRIES 8192
-
 #define LDT_ENTRY_SIZE 8
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #ifndef __ASSEMBLY__
-
 struct user_desc {
  unsigned int entry_number;
  unsigned int base_addr;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int limit;
  unsigned int seg_32bit:1;
  unsigned int contents:2;
  unsigned int read_exec_only:1;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int limit_in_pages:1;
  unsigned int seg_not_present:1;
  unsigned int useable:1;
 #ifdef __x86_64__
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int lm:1;
 #endif
 };
-
 #define MODIFY_LDT_CONTENTS_DATA 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MODIFY_LDT_CONTENTS_STACK 1
 #define MODIFY_LDT_CONTENTS_CODE 2
-
 #endif
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/linkage.h b/libc/kernel/arch-x86/asm/linkage.h
index f149e4d..3db2a07 100644
--- a/libc/kernel/arch-x86/asm/linkage.h
+++ b/libc/kernel/arch-x86/asm/linkage.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "linkage_64.h"
diff --git a/libc/kernel/arch-x86/asm/linkage_32.h b/libc/kernel/arch-x86/asm/linkage_32.h
index 6db10ee..e850947 100644
--- a/libc/kernel/arch-x86/asm/linkage_32.h
+++ b/libc/kernel/arch-x86/asm/linkage_32.h
@@ -7,15 +7,20 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ASM_LINKAGE_H
 #define __ASM_LINKAGE_H
-
 #define asmlinkage CPP_ASMLINKAGE __attribute__((regparm(0)))
 #define FASTCALL(x) x __attribute__((regparm(3)))
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define fastcall __attribute__((regparm(3)))
-
 #define prevent_tail_call(ret) __asm__ ("" : "=r" (ret) : "0" (ret))
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/local.h b/libc/kernel/arch-x86/asm/local.h
index 85080b8..34d9782 100644
--- a/libc/kernel/arch-x86/asm/local.h
+++ b/libc/kernel/arch-x86/asm/local.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "local_64.h"
diff --git a/libc/kernel/arch-x86/asm/local_32.h b/libc/kernel/arch-x86/asm/local_32.h
index fcad753..9c4c2b2 100644
--- a/libc/kernel/arch-x86/asm/local_32.h
+++ b/libc/kernel/arch-x86/asm/local_32.h
@@ -7,45 +7,55 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ARCH_I386_LOCAL_H
 #define _ARCH_I386_LOCAL_H
-
 #include <linux/percpu.h>
 #include <asm/system.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/atomic.h>
-
 typedef struct
 {
  atomic_long_t a;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 } local_t;
-
 #define LOCAL_INIT(i) { ATOMIC_LONG_INIT(i) }
-
 #define local_read(l) atomic_long_read(&(l)->a)
 #define local_set(l,i) atomic_long_set(&(l)->a, (i))
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define local_inc_return(l) (local_add_return(1,l))
 #define local_dec_return(l) (local_sub_return(1,l))
 #define local_cmpxchg(l, o, n)   (cmpxchg_local(&((l)->a.counter), (o), (n)))
 #define local_xchg(l, n) (xchg(&((l)->a.counter), (n)))
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define local_add_unless(l, a, u)  ({   long c, old;   c = local_read(l);   for (;;) {   if (unlikely(c == (u)))   break;   old = local_cmpxchg((l), c, c + (a));   if (likely(old == c))   break;   c = old;   }   c != (u);  })
 #define local_inc_not_zero(l) local_add_unless((l), 1, 0)
 #define __local_inc(l) local_inc(l)
 #define __local_dec(l) local_dec(l)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __local_add(i,l) local_add((i),(l))
 #define __local_sub(i,l) local_sub((i),(l))
 #define cpu_local_wrap_v(l)   ({ local_t res__;   preempt_disable();   res__ = (l);   preempt_enable();   res__; })
 #define cpu_local_wrap(l)   ({ preempt_disable();   l;   preempt_enable(); })  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define cpu_local_read(l) cpu_local_wrap_v(local_read(&__get_cpu_var(l)))
 #define cpu_local_set(l, i) cpu_local_wrap(local_set(&__get_cpu_var(l), (i)))
 #define cpu_local_inc(l) cpu_local_wrap(local_inc(&__get_cpu_var(l)))
 #define cpu_local_dec(l) cpu_local_wrap(local_dec(&__get_cpu_var(l)))
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define cpu_local_add(i, l) cpu_local_wrap(local_add((i), &__get_cpu_var(l)))
 #define cpu_local_sub(i, l) cpu_local_wrap(local_sub((i), &__get_cpu_var(l)))
 #define __cpu_local_inc(l) cpu_local_inc(l)
 #define __cpu_local_dec(l) cpu_local_dec(l)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __cpu_local_add(i, l) cpu_local_add((i), (l))
 #define __cpu_local_sub(i, l) cpu_local_sub((i), (l))
 #endif
diff --git a/libc/kernel/arch-x86/asm/math_emu.h b/libc/kernel/arch-x86/asm/math_emu.h
index 9380d19..068006c 100644
--- a/libc/kernel/arch-x86/asm/math_emu.h
+++ b/libc/kernel/arch-x86/asm/math_emu.h
@@ -7,34 +7,45 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _I386_MATH_EMU_H
 #define _I386_MATH_EMU_H
-
 #include <asm/sigcontext.h>
-
 struct info {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long ___orig_eip;
  long ___ebx;
  long ___ecx;
  long ___edx;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long ___esi;
  long ___edi;
  long ___ebp;
  long ___eax;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long ___ds;
  long ___es;
  long ___fs;
  long ___orig_eax;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long ___eip;
  long ___cs;
  long ___eflags;
  long ___esp;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long ___ss;
  long ___vm86_es;
  long ___vm86_ds;
  long ___vm86_fs;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long ___vm86_gs;
 };
 #endif
diff --git a/libc/kernel/arch-x86/asm/mc146818rtc.h b/libc/kernel/arch-x86/asm/mc146818rtc.h
index 8497877..4c7f9cc 100644
--- a/libc/kernel/arch-x86/asm/mc146818rtc.h
+++ b/libc/kernel/arch-x86/asm/mc146818rtc.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "mc146818rtc_64.h"
diff --git a/libc/kernel/arch-x86/asm/mc146818rtc_32.h b/libc/kernel/arch-x86/asm/mc146818rtc_32.h
index 899d608..b6af33a 100644
--- a/libc/kernel/arch-x86/asm/mc146818rtc_32.h
+++ b/libc/kernel/arch-x86/asm/mc146818rtc_32.h
@@ -7,38 +7,44 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_MC146818RTC_H
 #define _ASM_MC146818RTC_H
-
 #include <asm/io.h>
 #include <asm/system.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/processor.h>
 #include <linux/mc146818rtc.h>
-
 #ifndef RTC_PORT
 #define RTC_PORT(x) (0x70 + (x))
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define RTC_ALWAYS_BCD 1  
 #endif
-
 #ifdef __HAVE_ARCH_CMPXCHG
-
 #include <linux/smp.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define lock_cmos_prefix(reg)   do {   unsigned long cmos_flags;   local_irq_save(cmos_flags);   lock_cmos(reg)
 #define lock_cmos_suffix(reg)   unlock_cmos();   local_irq_restore(cmos_flags);   } while (0)
 #else
 #define lock_cmos_prefix(reg) do {} while (0)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define lock_cmos_suffix(reg) do {} while (0)
 #define lock_cmos(reg)
 #define unlock_cmos()
 #define do_i_have_lock_cmos() 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define current_lock_cmos_reg() 0
 #endif
 #define CMOS_READ(addr) rtc_cmos_read(addr)
 #define CMOS_WRITE(val, addr) rtc_cmos_write(val, addr)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define RTC_IRQ 8
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/mman.h b/libc/kernel/arch-x86/asm/mman.h
index 7eda319..b0b4e1d 100644
--- a/libc/kernel/arch-x86/asm/mman.h
+++ b/libc/kernel/arch-x86/asm/mman.h
@@ -7,24 +7,29 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_MMAN_H
 #define _ASM_X86_MMAN_H
-
 #include <asm-generic/mman.h>
-
 #define MAP_32BIT 0x40  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MAP_GROWSDOWN 0x0100  
 #define MAP_DENYWRITE 0x0800  
 #define MAP_EXECUTABLE 0x1000  
 #define MAP_LOCKED 0x2000  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MAP_NORESERVE 0x4000  
 #define MAP_POPULATE 0x8000  
 #define MAP_NONBLOCK 0x10000  
-
 #define MCL_CURRENT 1  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MCL_FUTURE 2  
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/mmsegment.h b/libc/kernel/arch-x86/asm/mmsegment.h
index 76045c7..01bffca 100644
--- a/libc/kernel/arch-x86/asm/mmsegment.h
+++ b/libc/kernel/arch-x86/asm/mmsegment.h
@@ -7,13 +7,19 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_MMSEGMENT_H
 #define _ASM_MMSEGMENT_H 1
-
 typedef struct {
  unsigned long seg;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 } mm_segment_t;
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/mmu.h b/libc/kernel/arch-x86/asm/mmu.h
index 30db10a..61c3cc0 100644
--- a/libc/kernel/arch-x86/asm/mmu.h
+++ b/libc/kernel/arch-x86/asm/mmu.h
@@ -7,19 +7,25 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_MMU_H
 #define _ASM_X86_MMU_H
-
 #include <linux/spinlock.h>
 #include <linux/mutex.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef struct {
  void *ldt;
  int size;
  struct mutex lock;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  void *vdso;
 } mm_context_t;
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/module.h b/libc/kernel/arch-x86/asm/module.h
index ff292d4..1627050 100644
--- a/libc/kernel/arch-x86/asm/module.h
+++ b/libc/kernel/arch-x86/asm/module.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "module_64.h"
diff --git a/libc/kernel/arch-x86/asm/module_32.h b/libc/kernel/arch-x86/asm/module_32.h
index 2e26729..fd1d099 100644
--- a/libc/kernel/arch-x86/asm/module_32.h
+++ b/libc/kernel/arch-x86/asm/module_32.h
@@ -7,23 +7,27 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_I386_MODULE_H
 #define _ASM_I386_MODULE_H
-
 struct mod_arch_specific
 {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 #define Elf_Shdr Elf32_Shdr
 #define Elf_Sym Elf32_Sym
 #define Elf_Ehdr Elf32_Ehdr
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #error unknown processor family
-
 #define MODULE_STACKSIZE ""
-
 #define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY MODULE_STACKSIZE
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/mpspec.h b/libc/kernel/arch-x86/asm/mpspec.h
index 2336504..f26ad2d 100644
--- a/libc/kernel/arch-x86/asm/mpspec.h
+++ b/libc/kernel/arch-x86/asm/mpspec.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "mpspec_64.h"
diff --git a/libc/kernel/arch-x86/asm/mpspec_32.h b/libc/kernel/arch-x86/asm/mpspec_32.h
index 7acbe8a..909c3c4 100644
--- a/libc/kernel/arch-x86/asm/mpspec_32.h
+++ b/libc/kernel/arch-x86/asm/mpspec_32.h
@@ -7,46 +7,49 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ASM_MPSPEC_H
 #define __ASM_MPSPEC_H
-
 #include <linux/cpumask.h>
 #include <asm/mpspec_def.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <mach_mpspec.h>
-
 #define PHYSID_ARRAY_SIZE BITS_TO_LONGS(MAX_APICS)
-
 struct physid_mask
 {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long mask[PHYSID_ARRAY_SIZE];
 };
-
 typedef struct physid_mask physid_mask_t;
-
 #define physid_set(physid, map) set_bit(physid, (map).mask)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define physid_clear(physid, map) clear_bit(physid, (map).mask)
 #define physid_isset(physid, map) test_bit(physid, (map).mask)
 #define physid_test_and_set(physid, map) test_and_set_bit(physid, (map).mask)
-
 #define physids_and(dst, src1, src2) bitmap_and((dst).mask, (src1).mask, (src2).mask, MAX_APICS)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define physids_or(dst, src1, src2) bitmap_or((dst).mask, (src1).mask, (src2).mask, MAX_APICS)
 #define physids_clear(map) bitmap_zero((map).mask, MAX_APICS)
 #define physids_complement(dst, src) bitmap_complement((dst).mask,(src).mask, MAX_APICS)
 #define physids_empty(map) bitmap_empty((map).mask, MAX_APICS)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define physids_equal(map1, map2) bitmap_equal((map1).mask, (map2).mask, MAX_APICS)
 #define physids_weight(map) bitmap_weight((map).mask, MAX_APICS)
 #define physids_shift_right(d, s, n) bitmap_shift_right((d).mask, (s).mask, n, MAX_APICS)
 #define physids_shift_left(d, s, n) bitmap_shift_left((d).mask, (s).mask, n, MAX_APICS)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define physids_coerce(map) ((map).mask[0])
-
 #define physids_promote(physids)   ({   physid_mask_t __physid_mask = PHYSID_MASK_NONE;   __physid_mask.mask[0] = physids;   __physid_mask;   })
-
 #define physid_mask_of_physid(physid)   ({   physid_mask_t __physid_mask = PHYSID_MASK_NONE;   physid_set(physid, __physid_mask);   __physid_mask;   })
-
 #define PHYSID_MASK_ALL { {[0 ... PHYSID_ARRAY_SIZE-1] = ~0UL} }
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PHYSID_MASK_NONE { {[0 ... PHYSID_ARRAY_SIZE-1] = 0UL} }
-
 #endif
-
diff --git a/libc/kernel/arch-x86/asm/mpspec_def.h b/libc/kernel/arch-x86/asm/mpspec_def.h
index 1f15363..f9bb33a 100644
--- a/libc/kernel/arch-x86/asm/mpspec_def.h
+++ b/libc/kernel/arch-x86/asm/mpspec_def.h
@@ -7,165 +7,190 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ASM_MPSPEC_DEF_H
 #define __ASM_MPSPEC_DEF_H
-
 #define SMP_MAGIC_IDENT (('_'<<24)|('P'<<16)|('M'<<8)|'_')
-
 #define MAX_MPC_ENTRY 1024
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MAX_APICS 256
-
 struct intel_mp_floating
 {
  char mpf_signature[4];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long mpf_physptr;
  unsigned char mpf_length;
  unsigned char mpf_specification;
  unsigned char mpf_checksum;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned char mpf_feature1;
  unsigned char mpf_feature2;
  unsigned char mpf_feature3;
  unsigned char mpf_feature4;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned char mpf_feature5;
 };
-
 struct mp_config_table
 {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  char mpc_signature[4];
 #define MPC_SIGNATURE "PCMP"
  unsigned short mpc_length;
  char mpc_spec;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  char mpc_checksum;
  char mpc_oem[8];
  char mpc_productid[12];
  unsigned long mpc_oemptr;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned short mpc_oemsize;
  unsigned short mpc_oemcount;
  unsigned long mpc_lapic;
  unsigned long reserved;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 #define MP_PROCESSOR 0
 #define MP_BUS 1
 #define MP_IOAPIC 2
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MP_INTSRC 3
 #define MP_LINTSRC 4
 #define MP_TRANSLATION 192  
-
 struct mpc_config_processor
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 {
  unsigned char mpc_type;
  unsigned char mpc_apicid;
  unsigned char mpc_apicver;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned char mpc_cpuflag;
 #define CPU_ENABLED 1  
 #define CPU_BOOTPROCESSOR 2  
  unsigned long mpc_cpufeature;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CPU_STEPPING_MASK 0x0F
 #define CPU_MODEL_MASK 0xF0
 #define CPU_FAMILY_MASK 0xF00
  unsigned long mpc_featureflag;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long mpc_reserved[2];
 };
-
 struct mpc_config_bus
 {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned char mpc_type;
  unsigned char mpc_busid;
  unsigned char mpc_bustype[6];
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define BUSTYPE_EISA "EISA"
 #define BUSTYPE_ISA "ISA"
 #define BUSTYPE_INTERN "INTERN"  
 #define BUSTYPE_MCA "MCA"
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define BUSTYPE_VL "VL"  
 #define BUSTYPE_PCI "PCI"
 #define BUSTYPE_PCMCIA "PCMCIA"
 #define BUSTYPE_CBUS "CBUS"
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define BUSTYPE_CBUSII "CBUSII"
 #define BUSTYPE_FUTURE "FUTURE"
 #define BUSTYPE_MBI "MBI"
 #define BUSTYPE_MBII "MBII"
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define BUSTYPE_MPI "MPI"
 #define BUSTYPE_MPSA "MPSA"
 #define BUSTYPE_NUBUS "NUBUS"
 #define BUSTYPE_TC "TC"
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define BUSTYPE_VME "VME"
 #define BUSTYPE_XPRESS "XPRESS"
-
 struct mpc_config_ioapic
 {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned char mpc_type;
  unsigned char mpc_apicid;
  unsigned char mpc_apicver;
  unsigned char mpc_flags;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MPC_APIC_USABLE 0x01
  unsigned long mpc_apicaddr;
 };
-
 struct mpc_config_intsrc
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 {
  unsigned char mpc_type;
  unsigned char mpc_irqtype;
  unsigned short mpc_irqflag;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned char mpc_srcbus;
  unsigned char mpc_srcbusirq;
  unsigned char mpc_dstapic;
  unsigned char mpc_dstirq;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 enum mp_irq_source_types {
  mp_INT = 0,
  mp_NMI = 1,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  mp_SMI = 2,
  mp_ExtINT = 3
 };
-
 #define MP_IRQDIR_DEFAULT 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MP_IRQDIR_HIGH 1
 #define MP_IRQDIR_LOW 3
-
 struct mpc_config_lintsrc
 {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned char mpc_type;
  unsigned char mpc_irqtype;
  unsigned short mpc_irqflag;
  unsigned char mpc_srcbusid;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned char mpc_srcbusirq;
  unsigned char mpc_destapic;
 #define MP_APIC_ALL 0xFF
  unsigned char mpc_destapiclint;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 struct mp_config_oemtable
 {
  char oem_signature[4];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MPC_OEM_SIGNATURE "_OEM"
  unsigned short oem_length;
  char oem_rev;
  char oem_checksum;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  char mpc_oem[8];
 };
-
 struct mpc_config_translation
 {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned char mpc_type;
  unsigned char trans_len;
  unsigned char trans_type;
  unsigned char trans_quad;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned char trans_global;
  unsigned char trans_local;
  unsigned short trans_reserved;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 enum mp_bustype {
  MP_BUS_ISA = 1,
  MP_BUS_EISA,
  MP_BUS_PCI,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  MP_BUS_MCA,
 };
 #endif
-
diff --git a/libc/kernel/arch-x86/asm/msgbuf.h b/libc/kernel/arch-x86/asm/msgbuf.h
index 8843e78..7580210 100644
--- a/libc/kernel/arch-x86/asm/msgbuf.h
+++ b/libc/kernel/arch-x86/asm/msgbuf.h
@@ -7,32 +7,43 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_MSGBUF_H
 #define _ASM_X86_MSGBUF_H
-
 struct msqid64_ds {
  struct ipc64_perm msg_perm;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __kernel_time_t msg_stime;
 #ifdef __i386__
  unsigned long __unused1;
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __kernel_time_t msg_rtime;
 #ifdef __i386__
  unsigned long __unused2;
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __kernel_time_t msg_ctime;
 #ifdef __i386__
  unsigned long __unused3;
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long msg_cbytes;
  unsigned long msg_qnum;
  unsigned long msg_qbytes;
  __kernel_pid_t msg_lspid;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __kernel_pid_t msg_lrpid;
  unsigned long __unused4;
  unsigned long __unused5;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/msr-index.h b/libc/kernel/arch-x86/asm/msr-index.h
index 8ea204e..2336f82 100644
--- a/libc/kernel/arch-x86/asm/msr-index.h
+++ b/libc/kernel/arch-x86/asm/msr-index.h
@@ -7,277 +7,310 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ASM_MSR_INDEX_H
 #define __ASM_MSR_INDEX_H
-
 #define MSR_EFER 0xc0000080  
 #define MSR_STAR 0xc0000081  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_LSTAR 0xc0000082  
 #define MSR_CSTAR 0xc0000083  
 #define MSR_SYSCALL_MASK 0xc0000084  
 #define MSR_FS_BASE 0xc0000100  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_GS_BASE 0xc0000101  
 #define MSR_KERNEL_GS_BASE 0xc0000102  
-
 #define _EFER_SCE 0  
 #define _EFER_LME 8  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define _EFER_LMA 10  
 #define _EFER_NX 11  
-
 #define EFER_SCE (1<<_EFER_SCE)
 #define EFER_LME (1<<_EFER_LME)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EFER_LMA (1<<_EFER_LMA)
 #define EFER_NX (1<<_EFER_NX)
-
 #define MSR_IA32_PERFCTR0 0x000000c1
 #define MSR_IA32_PERFCTR1 0x000000c2
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_FSB_FREQ 0x000000cd
-
 #define MSR_MTRRcap 0x000000fe
 #define MSR_IA32_BBL_CR_CTL 0x00000119
-
 #define MSR_IA32_SYSENTER_CS 0x00000174
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_IA32_SYSENTER_ESP 0x00000175
 #define MSR_IA32_SYSENTER_EIP 0x00000176
-
 #define MSR_IA32_MCG_CAP 0x00000179
 #define MSR_IA32_MCG_STATUS 0x0000017a
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_IA32_MCG_CTL 0x0000017b
-
 #define MSR_IA32_PEBS_ENABLE 0x000003f1
 #define MSR_IA32_DS_AREA 0x00000600
 #define MSR_IA32_PERF_CAPABILITIES 0x00000345
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_MTRRfix64K_00000 0x00000250
 #define MSR_MTRRfix16K_80000 0x00000258
 #define MSR_MTRRfix16K_A0000 0x00000259
 #define MSR_MTRRfix4K_C0000 0x00000268
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_MTRRfix4K_C8000 0x00000269
 #define MSR_MTRRfix4K_D0000 0x0000026a
 #define MSR_MTRRfix4K_D8000 0x0000026b
 #define MSR_MTRRfix4K_E0000 0x0000026c
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_MTRRfix4K_E8000 0x0000026d
 #define MSR_MTRRfix4K_F0000 0x0000026e
 #define MSR_MTRRfix4K_F8000 0x0000026f
 #define MSR_MTRRdefType 0x000002ff
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_IA32_DEBUGCTLMSR 0x000001d9
 #define MSR_IA32_LASTBRANCHFROMIP 0x000001db
 #define MSR_IA32_LASTBRANCHTOIP 0x000001dc
 #define MSR_IA32_LASTINTFROMIP 0x000001dd
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_IA32_LASTINTTOIP 0x000001de
-
 #define MSR_IA32_MC0_CTL 0x00000400
 #define MSR_IA32_MC0_STATUS 0x00000401
 #define MSR_IA32_MC0_ADDR 0x00000402
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_IA32_MC0_MISC 0x00000403
-
 #define MSR_P6_PERFCTR0 0x000000c1
 #define MSR_P6_PERFCTR1 0x000000c2
 #define MSR_P6_EVNTSEL0 0x00000186
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P6_EVNTSEL1 0x00000187
-
 #define MSR_AMD64_IBSFETCHCTL 0xc0011030
 #define MSR_AMD64_IBSFETCHLINAD 0xc0011031
 #define MSR_AMD64_IBSFETCHPHYSAD 0xc0011032
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_AMD64_IBSOPCTL 0xc0011033
 #define MSR_AMD64_IBSOPRIP 0xc0011034
 #define MSR_AMD64_IBSOPDATA 0xc0011035
 #define MSR_AMD64_IBSOPDATA2 0xc0011036
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_AMD64_IBSOPDATA3 0xc0011037
 #define MSR_AMD64_IBSDCLINAD 0xc0011038
 #define MSR_AMD64_IBSDCPHYSAD 0xc0011039
 #define MSR_AMD64_IBSCTL 0xc001103a
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_K8_TOP_MEM1 0xc001001a
 #define MSR_K8_TOP_MEM2 0xc001001d
 #define MSR_K8_SYSCFG 0xc0010010
 #define MSR_K8_HWCR 0xc0010015
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_K8_ENABLE_C1E 0xc0010055
 #define K8_MTRRFIXRANGE_DRAM_ENABLE 0x00040000  
 #define K8_MTRRFIXRANGE_DRAM_MODIFY 0x00080000  
 #define K8_MTRR_RDMEM_WRMEM_MASK 0x18181818  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_K7_EVNTSEL0 0xc0010000
 #define MSR_K7_PERFCTR0 0xc0010004
 #define MSR_K7_EVNTSEL1 0xc0010001
 #define MSR_K7_PERFCTR1 0xc0010005
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_K7_EVNTSEL2 0xc0010002
 #define MSR_K7_PERFCTR2 0xc0010006
 #define MSR_K7_EVNTSEL3 0xc0010003
 #define MSR_K7_PERFCTR3 0xc0010007
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_K7_CLK_CTL 0xc001001b
 #define MSR_K7_HWCR 0xc0010015
 #define MSR_K7_FID_VID_CTL 0xc0010041
 #define MSR_K7_FID_VID_STATUS 0xc0010042
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_K6_EFER 0xc0000080
 #define MSR_K6_STAR 0xc0000081
 #define MSR_K6_WHCR 0xc0000082
 #define MSR_K6_UWCCR 0xc0000085
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_K6_EPMR 0xc0000086
 #define MSR_K6_PSOR 0xc0000087
 #define MSR_K6_PFIR 0xc0000088
-
 #define MSR_IDT_FCR1 0x00000107
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_IDT_FCR2 0x00000108
 #define MSR_IDT_FCR3 0x00000109
 #define MSR_IDT_FCR4 0x0000010a
-
 #define MSR_IDT_MCR0 0x00000110
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_IDT_MCR1 0x00000111
 #define MSR_IDT_MCR2 0x00000112
 #define MSR_IDT_MCR3 0x00000113
 #define MSR_IDT_MCR4 0x00000114
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_IDT_MCR5 0x00000115
 #define MSR_IDT_MCR6 0x00000116
 #define MSR_IDT_MCR7 0x00000117
 #define MSR_IDT_MCR_CTRL 0x00000120
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_VIA_FCR 0x00001107
 #define MSR_VIA_LONGHAUL 0x0000110a
 #define MSR_VIA_RNG 0x0000110b
 #define MSR_VIA_BCR2 0x00001147
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_TMTA_LONGRUN_CTRL 0x80868010
 #define MSR_TMTA_LONGRUN_FLAGS 0x80868011
 #define MSR_TMTA_LRTI_READOUT 0x80868018
 #define MSR_TMTA_LRTI_VOLT_MHZ 0x8086801a
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_IA32_P5_MC_ADDR 0x00000000
 #define MSR_IA32_P5_MC_TYPE 0x00000001
 #define MSR_IA32_TSC 0x00000010
 #define MSR_IA32_PLATFORM_ID 0x00000017
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_IA32_EBL_CR_POWERON 0x0000002a
-
 #define MSR_IA32_APICBASE 0x0000001b
 #define MSR_IA32_APICBASE_BSP (1<<8)
 #define MSR_IA32_APICBASE_ENABLE (1<<11)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_IA32_APICBASE_BASE (0xfffff<<12)
-
 #define MSR_IA32_UCODE_WRITE 0x00000079
 #define MSR_IA32_UCODE_REV 0x0000008b
-
 #define MSR_IA32_PERF_STATUS 0x00000198
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_IA32_PERF_CTL 0x00000199
-
 #define MSR_IA32_MPERF 0x000000e7
 #define MSR_IA32_APERF 0x000000e8
-
 #define MSR_IA32_THERM_CONTROL 0x0000019a
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_IA32_THERM_INTERRUPT 0x0000019b
 #define MSR_IA32_THERM_STATUS 0x0000019c
 #define MSR_IA32_MISC_ENABLE 0x000001a0
-
 #define MSR_P6_EVNTSEL0 0x00000186
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P6_EVNTSEL1 0x00000187
-
 #define MSR_IA32_MCG_EAX 0x00000180
 #define MSR_IA32_MCG_EBX 0x00000181
 #define MSR_IA32_MCG_ECX 0x00000182
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_IA32_MCG_EDX 0x00000183
 #define MSR_IA32_MCG_ESI 0x00000184
 #define MSR_IA32_MCG_EDI 0x00000185
 #define MSR_IA32_MCG_EBP 0x00000186
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_IA32_MCG_ESP 0x00000187
 #define MSR_IA32_MCG_EFLAGS 0x00000188
 #define MSR_IA32_MCG_EIP 0x00000189
 #define MSR_IA32_MCG_RESERVED 0x0000018a
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P4_BPU_PERFCTR0 0x00000300
 #define MSR_P4_BPU_PERFCTR1 0x00000301
 #define MSR_P4_BPU_PERFCTR2 0x00000302
 #define MSR_P4_BPU_PERFCTR3 0x00000303
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P4_MS_PERFCTR0 0x00000304
 #define MSR_P4_MS_PERFCTR1 0x00000305
 #define MSR_P4_MS_PERFCTR2 0x00000306
 #define MSR_P4_MS_PERFCTR3 0x00000307
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P4_FLAME_PERFCTR0 0x00000308
 #define MSR_P4_FLAME_PERFCTR1 0x00000309
 #define MSR_P4_FLAME_PERFCTR2 0x0000030a
 #define MSR_P4_FLAME_PERFCTR3 0x0000030b
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P4_IQ_PERFCTR0 0x0000030c
 #define MSR_P4_IQ_PERFCTR1 0x0000030d
 #define MSR_P4_IQ_PERFCTR2 0x0000030e
 #define MSR_P4_IQ_PERFCTR3 0x0000030f
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P4_IQ_PERFCTR4 0x00000310
 #define MSR_P4_IQ_PERFCTR5 0x00000311
 #define MSR_P4_BPU_CCCR0 0x00000360
 #define MSR_P4_BPU_CCCR1 0x00000361
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P4_BPU_CCCR2 0x00000362
 #define MSR_P4_BPU_CCCR3 0x00000363
 #define MSR_P4_MS_CCCR0 0x00000364
 #define MSR_P4_MS_CCCR1 0x00000365
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P4_MS_CCCR2 0x00000366
 #define MSR_P4_MS_CCCR3 0x00000367
 #define MSR_P4_FLAME_CCCR0 0x00000368
 #define MSR_P4_FLAME_CCCR1 0x00000369
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P4_FLAME_CCCR2 0x0000036a
 #define MSR_P4_FLAME_CCCR3 0x0000036b
 #define MSR_P4_IQ_CCCR0 0x0000036c
 #define MSR_P4_IQ_CCCR1 0x0000036d
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P4_IQ_CCCR2 0x0000036e
 #define MSR_P4_IQ_CCCR3 0x0000036f
 #define MSR_P4_IQ_CCCR4 0x00000370
 #define MSR_P4_IQ_CCCR5 0x00000371
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P4_ALF_ESCR0 0x000003ca
 #define MSR_P4_ALF_ESCR1 0x000003cb
 #define MSR_P4_BPU_ESCR0 0x000003b2
 #define MSR_P4_BPU_ESCR1 0x000003b3
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P4_BSU_ESCR0 0x000003a0
 #define MSR_P4_BSU_ESCR1 0x000003a1
 #define MSR_P4_CRU_ESCR0 0x000003b8
 #define MSR_P4_CRU_ESCR1 0x000003b9
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P4_CRU_ESCR2 0x000003cc
 #define MSR_P4_CRU_ESCR3 0x000003cd
 #define MSR_P4_CRU_ESCR4 0x000003e0
 #define MSR_P4_CRU_ESCR5 0x000003e1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P4_DAC_ESCR0 0x000003a8
 #define MSR_P4_DAC_ESCR1 0x000003a9
 #define MSR_P4_FIRM_ESCR0 0x000003a4
 #define MSR_P4_FIRM_ESCR1 0x000003a5
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P4_FLAME_ESCR0 0x000003a6
 #define MSR_P4_FLAME_ESCR1 0x000003a7
 #define MSR_P4_FSB_ESCR0 0x000003a2
 #define MSR_P4_FSB_ESCR1 0x000003a3
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P4_IQ_ESCR0 0x000003ba
 #define MSR_P4_IQ_ESCR1 0x000003bb
 #define MSR_P4_IS_ESCR0 0x000003b4
 #define MSR_P4_IS_ESCR1 0x000003b5
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P4_ITLB_ESCR0 0x000003b6
 #define MSR_P4_ITLB_ESCR1 0x000003b7
 #define MSR_P4_IX_ESCR0 0x000003c8
 #define MSR_P4_IX_ESCR1 0x000003c9
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P4_MOB_ESCR0 0x000003aa
 #define MSR_P4_MOB_ESCR1 0x000003ab
 #define MSR_P4_MS_ESCR0 0x000003c0
 #define MSR_P4_MS_ESCR1 0x000003c1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P4_PMH_ESCR0 0x000003ac
 #define MSR_P4_PMH_ESCR1 0x000003ad
 #define MSR_P4_RAT_ESCR0 0x000003bc
 #define MSR_P4_RAT_ESCR1 0x000003bd
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P4_SAAT_ESCR0 0x000003ae
 #define MSR_P4_SAAT_ESCR1 0x000003af
 #define MSR_P4_SSU_ESCR0 0x000003be
 #define MSR_P4_SSU_ESCR1 0x000003bf  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P4_TBPU_ESCR0 0x000003c2
 #define MSR_P4_TBPU_ESCR1 0x000003c3
 #define MSR_P4_TC_ESCR0 0x000003c4
 #define MSR_P4_TC_ESCR1 0x000003c5
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_P4_U2L_ESCR0 0x000003b0
 #define MSR_P4_U2L_ESCR1 0x000003b1
-
 #define MSR_CORE_PERF_FIXED_CTR0 0x00000309
 #define MSR_CORE_PERF_FIXED_CTR1 0x0000030a
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_CORE_PERF_FIXED_CTR2 0x0000030b
 #define MSR_CORE_PERF_FIXED_CTR_CTRL 0x0000038d
 #define MSR_CORE_PERF_GLOBAL_STATUS 0x0000038e
 #define MSR_CORE_PERF_GLOBAL_CTRL 0x0000038f
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSR_CORE_PERF_GLOBAL_OVF_CTRL 0x00000390
-
 #define MSR_GEODE_BUSCONT_CONF0 0x00001900
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/msr.h b/libc/kernel/arch-x86/asm/msr.h
index f1da917..63da0cc 100644
--- a/libc/kernel/arch-x86/asm/msr.h
+++ b/libc/kernel/arch-x86/asm/msr.h
@@ -7,48 +7,43 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ASM_X86_MSR_H_
 #define __ASM_X86_MSR_H_
-
 #include <asm/msr-index.h>
-
 #ifndef __ASSEMBLY__
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <linux/types.h>
 #endif
-
 #ifdef __i386__
-
 #else
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #ifndef __ASSEMBLY__
 #include <linux/errno.h>
-
 #define rdmsr(msr,val1,val2)   __asm__ __volatile__("rdmsr"   : "=a" (val1), "=d" (val2)   : "c" (msr))
-
 #define rdmsrl(msr,val) do { unsigned long a__,b__;   __asm__ __volatile__("rdmsr"   : "=a" (a__), "=d" (b__)   : "c" (msr));   val = a__ | (b__<<32);  } while(0)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define wrmsr(msr,val1,val2)   __asm__ __volatile__("wrmsr"   :     : "c" (msr), "a" (val1), "d" (val2))
-
 #define wrmsrl(msr,val) wrmsr(msr,(__u32)((__u64)(val)),((__u64)(val))>>32)
-
 #define rdtsc(low,high)   __asm__ __volatile__("rdtsc" : "=a" (low), "=d" (high))
-
 #define rdtscl(low)   __asm__ __volatile__ ("rdtsc" : "=a" (low) : : "edx")
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define rdtscp(low,high,aux)   __asm__ __volatile__ (".byte 0x0f,0x01,0xf9" : "=a" (low), "=d" (high), "=c" (aux))
-
 #define rdtscll(val) do {   unsigned int __a,__d;   __asm__ __volatile__("rdtsc" : "=a" (__a), "=d" (__d));   (val) = ((unsigned long)__a) | (((unsigned long)__d)<<32);  } while(0)
-
 #define rdtscpll(val, aux) do {   unsigned long __a, __d;   __asm__ __volatile__ (".byte 0x0f,0x01,0xf9" : "=a" (__a), "=d" (__d), "=c" (aux));   (val) = (__d << 32) | __a;  } while (0)
-
 #define write_tsc(val1,val2) wrmsr(0x10, val1, val2)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define write_rdtscp_aux(val) wrmsr(0xc0000103, val, 0)
-
 #define rdpmc(counter,low,high)   __asm__ __volatile__("rdpmc"   : "=a" (low), "=d" (high)   : "c" (counter))
-
 #endif
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/page.h b/libc/kernel/arch-x86/asm/page.h
index e6dcf27..5ea7de5 100644
--- a/libc/kernel/arch-x86/asm/page.h
+++ b/libc/kernel/arch-x86/asm/page.h
@@ -7,10 +7,18 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifdef __i386__
 #include "page_32.h"
 #else
 #include "page_64.h"
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/page_32.h b/libc/kernel/arch-x86/asm/page_32.h
index 718cf95..5e864ad 100644
--- a/libc/kernel/arch-x86/asm/page_32.h
+++ b/libc/kernel/arch-x86/asm/page_32.h
@@ -7,16 +7,22 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _I386_PAGE_H
 #define _I386_PAGE_H
-
 #define PAGE_SHIFT 12
 #define PAGE_SIZE (1UL << PAGE_SHIFT)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PAGE_MASK (~(PAGE_SIZE-1))
-
 #define LARGE_PAGE_MASK (~(LARGE_PAGE_SIZE-1))
 #define LARGE_PAGE_SIZE (1UL << PMD_SHIFT)
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/param.h b/libc/kernel/arch-x86/asm/param.h
index 3fafd55..cd77123 100644
--- a/libc/kernel/arch-x86/asm/param.h
+++ b/libc/kernel/arch-x86/asm/param.h
@@ -7,20 +7,24 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_PARAM_H
 #define _ASM_X86_PARAM_H
-
 #ifndef HZ
 #define HZ 100
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
-
 #define EXEC_PAGESIZE 4096
-
 #ifndef NOGROUP
 #define NOGROUP (-1)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
-
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/paravirt.h b/libc/kernel/arch-x86/asm/paravirt.h
index ab0d08e..257e968 100644
--- a/libc/kernel/arch-x86/asm/paravirt.h
+++ b/libc/kernel/arch-x86/asm/paravirt.h
@@ -7,9 +7,15 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ASM_PARAVIRT_H
 #define __ASM_PARAVIRT_H
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/pda.h b/libc/kernel/arch-x86/asm/pda.h
index 6711224..a105f28 100644
--- a/libc/kernel/arch-x86/asm/pda.h
+++ b/libc/kernel/arch-x86/asm/pda.h
@@ -7,59 +7,65 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef X86_64_PDA_H
 #define X86_64_PDA_H
-
 #ifndef __ASSEMBLY__
 #include <linux/stddef.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <linux/types.h>
 #include <linux/cache.h>
 #include <asm/page.h>
-
 struct x8664_pda {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct task_struct *pcurrent;
  unsigned long data_offset;
  unsigned long kernelstack;
  unsigned long oldrsp;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  int irqcount;
  int cpunumber;
  char *irqstackptr;
  int nodenumber;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int __softirq_pending;
  unsigned int __nmi_count;
  short mmu_state;
  short isidle;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct mm_struct *active_mm;
  unsigned apic_timer_irqs;
  unsigned irq0_irqs;
  unsigned irq_resched_count;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned irq_call_count;
  unsigned irq_tlb_count;
  unsigned irq_thermal_count;
  unsigned irq_threshold_count;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned irq_spurious_count;
 } ____cacheline_aligned_in_smp;
-
 #define cpu_pda(i) (_cpu_pda[i])
-
 #define pda_offset(field) offsetof(struct x8664_pda, field)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define pda_to_op(op,field,val) do {   typedef typeof(_proxy_pda.field) T__;   if (0) { T__ tmp__; tmp__ = (val); }     switch (sizeof(_proxy_pda.field)) {   case 2:   asm(op "w %1,%%gs:%c2" :   "+m" (_proxy_pda.field) :   "ri" ((T__)val),   "i"(pda_offset(field)));   break;   case 4:   asm(op "l %1,%%gs:%c2" :   "+m" (_proxy_pda.field) :   "ri" ((T__)val),   "i" (pda_offset(field)));   break;   case 8:   asm(op "q %1,%%gs:%c2":   "+m" (_proxy_pda.field) :   "ri" ((T__)val),   "i"(pda_offset(field)));   break;   default:   __bad_pda_field();   }   } while (0)
-
 #define pda_from_op(op,field) ({   typeof(_proxy_pda.field) ret__;   switch (sizeof(_proxy_pda.field)) {   case 2:   asm(op "w %%gs:%c1,%0" :   "=r" (ret__) :   "i" (pda_offset(field)),   "m" (_proxy_pda.field));   break;   case 4:   asm(op "l %%gs:%c1,%0":   "=r" (ret__):   "i" (pda_offset(field)),   "m" (_proxy_pda.field));   break;   case 8:   asm(op "q %%gs:%c1,%0":   "=r" (ret__) :   "i" (pda_offset(field)),   "m" (_proxy_pda.field));   break;   default:   __bad_pda_field();   }   ret__; })
-
 #define read_pda(field) pda_from_op("mov",field)
 #define write_pda(field,val) pda_to_op("mov",field,val)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define add_pda(field,val) pda_to_op("add",field,val)
 #define sub_pda(field,val) pda_to_op("sub",field,val)
 #define or_pda(field,val) pda_to_op("or",field,val)
-
 #define test_and_clear_bit_pda(bit,field) ({   int old__;   asm volatile("btr %2,%%gs:%c3\n\tsbbl %0,%0"   : "=r" (old__), "+m" (_proxy_pda.field)   : "dIr" (bit), "i" (pda_offset(field)) : "memory");   old__;  })
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
-
 #define PDA_STACKOFFSET (5*8)
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/percpu.h b/libc/kernel/arch-x86/asm/percpu.h
index 7740e67..a51075b 100644
--- a/libc/kernel/arch-x86/asm/percpu.h
+++ b/libc/kernel/arch-x86/asm/percpu.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "percpu_64.h"
diff --git a/libc/kernel/arch-x86/asm/percpu_32.h b/libc/kernel/arch-x86/asm/percpu_32.h
index 21135d6..86bf3aa 100644
--- a/libc/kernel/arch-x86/asm/percpu_32.h
+++ b/libc/kernel/arch-x86/asm/percpu_32.h
@@ -7,30 +7,33 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ARCH_I386_PERCPU__
 #define __ARCH_I386_PERCPU__
-
 #ifdef __ASSEMBLY__
-
 #define PER_CPU(var, reg)   movl $per_cpu__##var, reg
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PER_CPU_VAR(var) per_cpu__##var
-
 #else
-
 #include <asm-generic/percpu.h>
 #define __percpu_seg ""
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define percpu_to_op(op,var,val)   do {   typedef typeof(var) T__;   if (0) { T__ tmp__; tmp__ = (val); }   switch (sizeof(var)) {   case 1:   asm(op "b %1,"__percpu_seg"%0"   : "+m" (var)   :"ri" ((T__)val));   break;   case 2:   asm(op "w %1,"__percpu_seg"%0"   : "+m" (var)   :"ri" ((T__)val));   break;   case 4:   asm(op "l %1,"__percpu_seg"%0"   : "+m" (var)   :"ri" ((T__)val));   break;   default: __bad_percpu_size();   }   } while (0)
-
 #define percpu_from_op(op,var)   ({   typeof(var) ret__;   switch (sizeof(var)) {   case 1:   asm(op "b "__percpu_seg"%1,%0"   : "=r" (ret__)   : "m" (var));   break;   case 2:   asm(op "w "__percpu_seg"%1,%0"   : "=r" (ret__)   : "m" (var));   break;   case 4:   asm(op "l "__percpu_seg"%1,%0"   : "=r" (ret__)   : "m" (var));   break;   default: __bad_percpu_size();   }   ret__; })
-
 #define x86_read_percpu(var) percpu_from_op("mov", per_cpu__##var)
 #define x86_write_percpu(var,val) percpu_to_op("mov", per_cpu__##var, val)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define x86_add_percpu(var,val) percpu_to_op("add", per_cpu__##var, val)
 #define x86_sub_percpu(var,val) percpu_to_op("sub", per_cpu__##var, val)
 #define x86_or_percpu(var,val) percpu_to_op("or", per_cpu__##var, val)
 #endif
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/pgalloc.h b/libc/kernel/arch-x86/asm/pgalloc.h
index d5a032b..37ce815 100644
--- a/libc/kernel/arch-x86/asm/pgalloc.h
+++ b/libc/kernel/arch-x86/asm/pgalloc.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "pgalloc_64.h"
diff --git a/libc/kernel/arch-x86/asm/pgalloc_32.h b/libc/kernel/arch-x86/asm/pgalloc_32.h
index bc0f884..022ca61 100644
--- a/libc/kernel/arch-x86/asm/pgalloc_32.h
+++ b/libc/kernel/arch-x86/asm/pgalloc_32.h
@@ -7,24 +7,29 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _I386_PGALLOC_H
 #define _I386_PGALLOC_H
-
 #include <linux/threads.h>
 #include <linux/mm.h>  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define paravirt_alloc_pt(mm, pfn) do { } while (0)
 #define paravirt_alloc_pd(pfn) do { } while (0)
 #define paravirt_alloc_pd(pfn) do { } while (0)
 #define paravirt_alloc_pd_clone(pfn, clonepfn, start, count) do { } while (0)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define paravirt_release_pt(pfn) do { } while (0)
 #define paravirt_release_pd(pfn) do { } while (0)
-
 #define pmd_populate_kernel(mm, pmd, pte)  do {   paravirt_alloc_pt(mm, __pa(pte) >> PAGE_SHIFT);   set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)));  } while (0)
-
 #define pmd_populate(mm, pmd, pte)  do {   paravirt_alloc_pt(mm, page_to_pfn(pte));   set_pmd(pmd, __pmd(_PAGE_TABLE +   ((unsigned long long)page_to_pfn(pte) <<   (unsigned long long) PAGE_SHIFT)));  } while (0)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __pte_free_tlb(tlb,pte)  do {   paravirt_release_pt(page_to_pfn(pte));   tlb_remove_page((tlb),(pte));  } while (0)
 #endif
diff --git a/libc/kernel/arch-x86/asm/pgtable-2level-defs.h b/libc/kernel/arch-x86/asm/pgtable-2level-defs.h
index 9edc6c5..9a60db5 100644
--- a/libc/kernel/arch-x86/asm/pgtable-2level-defs.h
+++ b/libc/kernel/arch-x86/asm/pgtable-2level-defs.h
@@ -7,16 +7,20 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _I386_PGTABLE_2LEVEL_DEFS_H
 #define _I386_PGTABLE_2LEVEL_DEFS_H
-
 #define SHARED_KERNEL_PMD 0
-
 #define PGDIR_SHIFT 22
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PTRS_PER_PGD 1024
-
 #define PTRS_PER_PTE 1024
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/pgtable-2level.h b/libc/kernel/arch-x86/asm/pgtable-2level.h
index 7ade4ed..77cdefd 100644
--- a/libc/kernel/arch-x86/asm/pgtable-2level.h
+++ b/libc/kernel/arch-x86/asm/pgtable-2level.h
@@ -7,33 +7,44 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _I386_PGTABLE_2LEVEL_H
 #define _I386_PGTABLE_2LEVEL_H
-
 #define pte_ERROR(e)   printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, (e).pte_low)
 #define pgd_ERROR(e)   printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define set_pte(pteptr, pteval) native_set_pte(pteptr, pteval)
 #define set_pte_at(mm,addr,ptep,pteval) native_set_pte_at(mm, addr, ptep, pteval)
 #define set_pmd(pmdptr, pmdval) native_set_pmd(pmdptr, pmdval)
 #define set_pte_atomic(pteptr, pteval) set_pte(pteptr,pteval)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define set_pte_present(mm,addr,ptep,pteval) set_pte_at(mm,addr,ptep,pteval)
 #define pte_clear(mm,addr,xp) do { set_pte_at(mm, addr, xp, __pte(0)); } while (0)
 #define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0)
 #define native_ptep_get_and_clear(xp) native_local_ptep_get_and_clear(xp)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define pte_page(x) pfn_to_page(pte_pfn(x))
 #define pte_none(x) (!(x).pte_low)
 #define pte_pfn(x) (pte_val(x) >> PAGE_SHIFT)
 #define pfn_pte(pfn, prot) __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define pfn_pmd(pfn, prot) __pmd(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
 #define PTE_FILE_MAX_BITS 29
 #define pte_to_pgoff(pte)   ((((pte).pte_low >> 1) & 0x1f ) + (((pte).pte_low >> 8) << 5 ))
 #define pgoff_to_pte(off)   ((pte_t) { (((off) & 0x1f) << 1) + (((off) >> 5) << 8) + _PAGE_FILE })
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __swp_type(x) (((x).val >> 1) & 0x1f)
 #define __swp_offset(x) ((x).val >> 8)
 #define __swp_entry(type, offset) ((swp_entry_t) { ((type) << 1) | ((offset) << 8) })
 #define __pte_to_swp_entry(pte) ((swp_entry_t) { (pte).pte_low })
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __swp_entry_to_pte(x) ((pte_t) { (x).val })
 #endif
diff --git a/libc/kernel/arch-x86/asm/pgtable.h b/libc/kernel/arch-x86/asm/pgtable.h
index 797e473..2367e0b 100644
--- a/libc/kernel/arch-x86/asm/pgtable.h
+++ b/libc/kernel/arch-x86/asm/pgtable.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "pgtable_64.h"
diff --git a/libc/kernel/arch-x86/asm/pgtable_32.h b/libc/kernel/arch-x86/asm/pgtable_32.h
index c63ba93..4740571 100644
--- a/libc/kernel/arch-x86/asm/pgtable_32.h
+++ b/libc/kernel/arch-x86/asm/pgtable_32.h
@@ -7,169 +7,182 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _I386_PGTABLE_H
 #define _I386_PGTABLE_H
-
 #ifndef __ASSEMBLY__
 #include <asm/processor.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/fixmap.h>
 #include <linux/threads.h>
 #include <asm/paravirt.h>
-
 #include <linux/bitops.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <linux/slab.h>
 #include <linux/list.h>
 #include <linux/spinlock.h>
-
 struct mm_struct;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct vm_area_struct;
-
 #define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
-
 #include <asm/pgtable-2level-defs.h>
-
 #define PGDIR_SIZE (1UL << PGDIR_SHIFT)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PGDIR_MASK (~(PGDIR_SIZE-1))
-
 #define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE)
 #define FIRST_USER_ADDRESS 0
-
 #define USER_PGD_PTRS (PAGE_OFFSET >> PGDIR_SHIFT)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define KERNEL_PGD_PTRS (PTRS_PER_PGD-USER_PGD_PTRS)
-
 #define TWOLEVEL_PGDIR_SHIFT 22
 #define BOOT_USER_PGD_PTRS (__PAGE_OFFSET >> TWOLEVEL_PGDIR_SHIFT)
 #define BOOT_KERNEL_PGD_PTRS (1024-BOOT_USER_PGD_PTRS)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VMALLOC_OFFSET (8*1024*1024)
 #define VMALLOC_START (((unsigned long) high_memory +   2*VMALLOC_OFFSET-1) & ~(VMALLOC_OFFSET-1))
 #define VMALLOC_END (FIXADDR_START-2*PAGE_SIZE)
-
 #define _PAGE_BIT_PRESENT 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define _PAGE_BIT_RW 1
 #define _PAGE_BIT_USER 2
 #define _PAGE_BIT_PWT 3
 #define _PAGE_BIT_PCD 4
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define _PAGE_BIT_ACCESSED 5
 #define _PAGE_BIT_DIRTY 6
 #define _PAGE_BIT_PSE 7  
 #define _PAGE_BIT_GLOBAL 8  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define _PAGE_BIT_UNUSED1 9  
 #define _PAGE_BIT_UNUSED2 10
 #define _PAGE_BIT_UNUSED3 11
 #define _PAGE_BIT_NX 63
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define _PAGE_PRESENT 0x001
 #define _PAGE_RW 0x002
 #define _PAGE_USER 0x004
 #define _PAGE_PWT 0x008
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define _PAGE_PCD 0x010
 #define _PAGE_ACCESSED 0x020
 #define _PAGE_DIRTY 0x040
 #define _PAGE_PSE 0x080  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define _PAGE_GLOBAL 0x100  
 #define _PAGE_UNUSED1 0x200  
 #define _PAGE_UNUSED2 0x400
 #define _PAGE_UNUSED3 0x800
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define _PAGE_FILE 0x040  
 #define _PAGE_PROTNONE 0x080  
 #define _PAGE_NX 0
-
 #define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED | _PAGE_DIRTY)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | _PAGE_DIRTY)
 #define _PAGE_CHG_MASK (PTE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
-
 #define PAGE_NONE   __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED)
 #define PAGE_SHARED   __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PAGE_SHARED_EXEC   __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED)
 #define PAGE_COPY_NOEXEC   __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX)
 #define PAGE_COPY_EXEC   __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
 #define PAGE_COPY   PAGE_COPY_NOEXEC
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PAGE_READONLY   __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX)
 #define PAGE_READONLY_EXEC   __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
-
 #define _PAGE_KERNEL   (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_NX)
 #define _PAGE_KERNEL_EXEC   (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __PAGE_KERNEL_RO (__PAGE_KERNEL & ~_PAGE_RW)
 #define __PAGE_KERNEL_RX (__PAGE_KERNEL_EXEC & ~_PAGE_RW)
 #define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL | _PAGE_PCD)
 #define __PAGE_KERNEL_LARGE (__PAGE_KERNEL | _PAGE_PSE)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __PAGE_KERNEL_LARGE_EXEC (__PAGE_KERNEL_EXEC | _PAGE_PSE)
-
 #define PAGE_KERNEL __pgprot(__PAGE_KERNEL)
 #define PAGE_KERNEL_RO __pgprot(__PAGE_KERNEL_RO)
 #define PAGE_KERNEL_EXEC __pgprot(__PAGE_KERNEL_EXEC)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PAGE_KERNEL_RX __pgprot(__PAGE_KERNEL_RX)
 #define PAGE_KERNEL_NOCACHE __pgprot(__PAGE_KERNEL_NOCACHE)
 #define PAGE_KERNEL_LARGE __pgprot(__PAGE_KERNEL_LARGE)
 #define PAGE_KERNEL_LARGE_EXEC __pgprot(__PAGE_KERNEL_LARGE_EXEC)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __P000 PAGE_NONE
 #define __P001 PAGE_READONLY
 #define __P010 PAGE_COPY
 #define __P011 PAGE_COPY
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __P100 PAGE_READONLY_EXEC
 #define __P101 PAGE_READONLY_EXEC
 #define __P110 PAGE_COPY_EXEC
 #define __P111 PAGE_COPY_EXEC
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __S000 PAGE_NONE
 #define __S001 PAGE_READONLY
 #define __S010 PAGE_SHARED
 #define __S011 PAGE_SHARED
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __S100 PAGE_READONLY_EXEC
 #define __S101 PAGE_READONLY_EXEC
 #define __S110 PAGE_SHARED_EXEC
 #define __S111 PAGE_SHARED_EXEC
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #undef TEST_ACCESS_OK
-
 #define pte_present(x) ((x).pte_low & (_PAGE_PRESENT | _PAGE_PROTNONE))
-
 #define pmd_none(x) (!(unsigned long)pmd_val(x))
 #define pmd_present(x) (pmd_val(x) & _PAGE_PRESENT)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define pmd_bad(x) ((pmd_val(x) & (~PAGE_MASK & ~_PAGE_USER)) != _KERNPG_TABLE)
-
 #define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT))
-
 #include <asm/pgtable-2level.h>
 #define pte_update(mm, addr, ptep) do { } while (0)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define pte_update_defer(mm, addr, ptep) do { } while (0)
 #define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
 #define ptep_set_access_flags(vma, address, ptep, entry, dirty)  ({   int __changed = !pte_same(*(ptep), entry);   if (__changed && dirty) {   (ptep)->pte_low = (entry).pte_low;   pte_update_defer((vma)->vm_mm, (address), (ptep));   flush_tlb_page(vma, address);   }   __changed;  })
 #define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ptep_test_and_clear_young(vma, addr, ptep) ({   int __ret = 0;   if (pte_young(*(ptep)))   __ret = test_and_clear_bit(_PAGE_BIT_ACCESSED,   &(ptep)->pte_low);   if (__ret)   pte_update((vma)->vm_mm, addr, ptep);   __ret;  })
 #define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH
 #define ptep_clear_flush_young(vma, address, ptep)  ({   int __young;   __young = ptep_test_and_clear_young((vma), (address), (ptep));   if (__young)   flush_tlb_page(vma, address);   __young;  })
 #define __HAVE_ARCH_PTEP_GET_AND_CLEAR
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __HAVE_ARCH_PTEP_GET_AND_CLEAR_FULL
 #define __HAVE_ARCH_PTEP_SET_WRPROTECT
 #define pgprot_noncached(prot) ((boot_cpu_data.x86 > 3)   ? (__pgprot(pgprot_val(prot) | _PAGE_PCD | _PAGE_PWT)) : (prot))
 #define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define pmd_large(pmd)  ((pmd_val(pmd) & (_PAGE_PSE|_PAGE_PRESENT)) == (_PAGE_PSE|_PAGE_PRESENT))
 #define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
 #define pgd_index_k(addr) pgd_index(addr)
 #define pgd_offset(mm, address) ((mm)->pgd+pgd_index(address))
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define pgd_offset_k(address) pgd_offset(&init_mm, address)
 #define pmd_index(address)   (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
 #define pte_index(address)   (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
 #define pte_offset_kernel(dir, address)   ((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(address))
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT))
 #define pmd_page_vaddr(pmd)   ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
-
- #define pte_offset_map(dir, address)   ((pte_t *)page_address(pmd_page(*(dir))) + pte_index(address))
+#define pte_offset_map(dir, address)   ((pte_t *)page_address(pmd_page(*(dir))) + pte_index(address))
 #define pte_offset_map_nested(dir, address) pte_offset_map(dir, address)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define pte_unmap(pte) do { } while (0)
 #define pte_unmap_nested(pte) do { } while (0)
 #define kpte_clear_flush(ptep, vaddr)  do {   pte_clear(&init_mm, vaddr, ptep);   __flush_tlb_one(vaddr);  } while (0)
 #define update_mmu_cache(vma,address,pte) do { } while (0)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
 #define io_remap_pfn_range(vma, vaddr, pfn, size, prot)   remap_pfn_range(vma, vaddr, pfn, size, prot)
 #include <asm-generic/pgtable.h>
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/poll.h b/libc/kernel/arch-x86/asm/poll.h
index 5b16673..d7e8adc 100644
--- a/libc/kernel/arch-x86/asm/poll.h
+++ b/libc/kernel/arch-x86/asm/poll.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include <asm-generic/poll.h>
diff --git a/libc/kernel/arch-x86/asm/posix_types.h b/libc/kernel/arch-x86/asm/posix_types.h
index 79bb490..21d4bf2 100644
--- a/libc/kernel/arch-x86/asm/posix_types.h
+++ b/libc/kernel/arch-x86/asm/posix_types.h
@@ -7,10 +7,18 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifdef __i386__
 #include "posix_types_32.h"
 #else
 #include "posix_types_64.h"
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/posix_types_32.h b/libc/kernel/arch-x86/asm/posix_types_32.h
index 97a8b69..90136d2 100644
--- a/libc/kernel/arch-x86/asm/posix_types_32.h
+++ b/libc/kernel/arch-x86/asm/posix_types_32.h
@@ -7,64 +7,72 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ARCH_I386_POSIX_TYPES_H
 #define __ARCH_I386_POSIX_TYPES_H
-
 typedef unsigned long __kernel_ino_t;
 typedef unsigned short __kernel_mode_t;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef unsigned short __kernel_nlink_t;
 typedef long __kernel_off_t;
 typedef int __kernel_pid_t;
 typedef unsigned short __kernel_ipc_pid_t;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef unsigned short __kernel_uid_t;
 typedef unsigned short __kernel_gid_t;
 typedef unsigned int __kernel_size_t;
 typedef int __kernel_ssize_t;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef int __kernel_ptrdiff_t;
 typedef long __kernel_time_t;
 typedef long __kernel_suseconds_t;
 typedef long __kernel_clock_t;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef int __kernel_timer_t;
 typedef int __kernel_clockid_t;
 typedef int __kernel_daddr_t;
 typedef char * __kernel_caddr_t;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef unsigned short __kernel_uid16_t;
 typedef unsigned short __kernel_gid16_t;
 typedef unsigned int __kernel_uid32_t;
 typedef unsigned int __kernel_gid32_t;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef unsigned short __kernel_old_uid_t;
 typedef unsigned short __kernel_old_gid_t;
 typedef unsigned short __kernel_old_dev_t;
-
 #ifdef __GNUC__
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef long long __kernel_loff_t;
 #endif
-
 typedef struct {
 #ifdef __USE_ALL
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  int val[2];
 #else
  int __val[2];
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 } __kernel_fsid_t;
-
 #if !defined(__GLIBC__) || __GLIBC__ < 2
-
 #undef __FD_SET
 #define __FD_SET(fd,fdsetp)   __asm__ __volatile__("btsl %1,%0":   "+m" (*(__kernel_fd_set *) (fdsetp)):"r" ((int) (fd)))
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #undef __FD_CLR
 #define __FD_CLR(fd,fdsetp)   __asm__ __volatile__("btrl %1,%0":   "+m" (*(__kernel_fd_set *) (fdsetp)):"r" ((int) (fd)))
-
 #undef __FD_ISSET
 #define __FD_ISSET(fd,fdsetp) (__extension__ ({   unsigned char __result;   __asm__ __volatile__("btl %1,%2 ; setb %0"   :"=q" (__result) :"r" ((int) (fd)),   "m" (*(__kernel_fd_set *) (fdsetp)));   __result; }))
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #undef __FD_ZERO
 #define __FD_ZERO(fdsetp)  do {   int __d0, __d1;   __asm__ __volatile__("cld ; rep ; stosl"   :"=m" (*(__kernel_fd_set *) (fdsetp)),   "=&c" (__d0), "=&D" (__d1)   :"a" (0), "1" (__FDSET_LONGS),   "2" ((__kernel_fd_set *) (fdsetp)) : "memory");  } while (0)
-
 #endif
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/prctl.h b/libc/kernel/arch-x86/asm/prctl.h
index 8852ca7..d194cf8 100644
--- a/libc/kernel/arch-x86/asm/prctl.h
+++ b/libc/kernel/arch-x86/asm/prctl.h
@@ -7,14 +7,20 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef X86_64_PRCTL_H
 #define X86_64_PRCTL_H 1
-
 #define ARCH_SET_GS 0x1001
 #define ARCH_SET_FS 0x1002
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ARCH_GET_FS 0x1003
 #define ARCH_GET_GS 0x1004
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/processor-flags.h b/libc/kernel/arch-x86/asm/processor-flags.h
index 79e8f7d..ab46527 100644
--- a/libc/kernel/arch-x86/asm/processor-flags.h
+++ b/libc/kernel/arch-x86/asm/processor-flags.h
@@ -7,73 +7,88 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ASM_I386_PROCESSOR_FLAGS_H
 #define __ASM_I386_PROCESSOR_FLAGS_H
-
 #define X86_EFLAGS_CF 0x00000001  
 #define X86_EFLAGS_PF 0x00000004  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_EFLAGS_AF 0x00000010  
 #define X86_EFLAGS_ZF 0x00000040  
 #define X86_EFLAGS_SF 0x00000080  
 #define X86_EFLAGS_TF 0x00000100  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_EFLAGS_IF 0x00000200  
 #define X86_EFLAGS_DF 0x00000400  
 #define X86_EFLAGS_OF 0x00000800  
 #define X86_EFLAGS_IOPL 0x00003000  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_EFLAGS_NT 0x00004000  
 #define X86_EFLAGS_RF 0x00010000  
 #define X86_EFLAGS_VM 0x00020000  
 #define X86_EFLAGS_AC 0x00040000  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_EFLAGS_VIF 0x00080000  
 #define X86_EFLAGS_VIP 0x00100000  
 #define X86_EFLAGS_ID 0x00200000  
-
 #define X86_CR0_PE 0x00000001  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_CR0_MP 0x00000002  
 #define X86_CR0_EM 0x00000004  
 #define X86_CR0_TS 0x00000008  
 #define X86_CR0_ET 0x00000010  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_CR0_NE 0x00000020  
 #define X86_CR0_WP 0x00010000  
 #define X86_CR0_AM 0x00040000  
 #define X86_CR0_NW 0x20000000  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_CR0_CD 0x40000000  
 #define X86_CR0_PG 0x80000000  
-
 #define X86_CR3_PWT 0x00000008  
 #define X86_CR3_PCD 0x00000010  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_CR4_VME 0x00000001  
 #define X86_CR4_PVI 0x00000002  
 #define X86_CR4_TSD 0x00000004  
 #define X86_CR4_DE 0x00000008  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_CR4_PSE 0x00000010  
 #define X86_CR4_PAE 0x00000020  
 #define X86_CR4_MCE 0x00000040  
 #define X86_CR4_PGE 0x00000080  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_CR4_PCE 0x00000100  
 #define X86_CR4_OSFXSR 0x00000200  
 #define X86_CR4_OSXMMEXCPT 0x00000400  
 #define X86_CR4_VMXE 0x00002000  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_CR8_TPR 0x0000000F  
-
 #define CX86_PCR0 0x20
 #define CX86_GCR 0xb8
 #define CX86_CCR0 0xc0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CX86_CCR1 0xc1
 #define CX86_CCR2 0xc2
 #define CX86_CCR3 0xc3
 #define CX86_CCR4 0xe8
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CX86_CCR5 0xe9
 #define CX86_CCR6 0xea
 #define CX86_CCR7 0xeb
 #define CX86_PCR1 0xf0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CX86_DIR0 0xfe
 #define CX86_DIR1 0xff
 #define CX86_ARR_BASE 0xc4
 #define CX86_RCR_BASE 0xdc
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/processor.h b/libc/kernel/arch-x86/asm/processor.h
index 7d47749..38a66b1 100644
--- a/libc/kernel/arch-x86/asm/processor.h
+++ b/libc/kernel/arch-x86/asm/processor.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "processor_64.h"
diff --git a/libc/kernel/arch-x86/asm/processor_32.h b/libc/kernel/arch-x86/asm/processor_32.h
index 539edd1..c759016 100644
--- a/libc/kernel/arch-x86/asm/processor_32.h
+++ b/libc/kernel/arch-x86/asm/processor_32.h
@@ -7,318 +7,342 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ASM_I386_PROCESSOR_H
 #define __ASM_I386_PROCESSOR_H
-
 #include <asm/vm86.h>
 #include <asm/math_emu.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/segment.h>
 #include <asm/page.h>
 #include <asm/types.h>
 #include <asm/sigcontext.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/cpufeature.h>
 #include <asm/msr.h>
 #include <asm/system.h>
 #include <linux/cache.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <linux/threads.h>
 #include <asm/percpu.h>
 #include <linux/cpumask.h>
 #include <linux/init.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/processor-flags.h>
-
 struct desc_struct {
  unsigned long a,b;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define desc_empty(desc)   (!((desc)->a | (desc)->b))
-
 #define desc_equal(desc1, desc2)   (((desc1)->a == (desc2)->a) && ((desc1)->b == (desc2)->b))
-
 #define current_text_addr() ({ void *pc; __asm__("movl $1f,%0\n1:":"=g" (pc)); pc; })
-
 struct cpuinfo_x86 {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 x86;
  __u8 x86_vendor;
  __u8 x86_model;
  __u8 x86_mask;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  char wp_works_ok;
  char hlt_works_ok;
  char hard_math;
  char rfu;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  int cpuid_level;
  unsigned long x86_capability[NCAPINTS];
  char x86_vendor_id[16];
  char x86_model_id[64];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  int x86_cache_size;
  int x86_cache_alignment;
  char fdiv_bug;
  char f00f_bug;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  char coma_bug;
  char pad0;
  int x86_power;
  unsigned long loops_per_jiffy;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned char x86_max_cores;
  unsigned char apicid;
  unsigned short x86_clflush_size;
 } __attribute__((__aligned__(SMP_CACHE_BYTES)));
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_VENDOR_INTEL 0
 #define X86_VENDOR_CYRIX 1
 #define X86_VENDOR_AMD 2
 #define X86_VENDOR_UMC 3
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_VENDOR_NEXGEN 4
 #define X86_VENDOR_CENTAUR 5
 #define X86_VENDOR_TRANSMETA 7
 #define X86_VENDOR_NSC 8
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define X86_VENDOR_NUM 9
 #define X86_VENDOR_UNKNOWN 0xff
-
 #define cpu_data(cpu) boot_cpu_data
 #define current_cpu_data boot_cpu_data
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define load_cr3(pgdir) write_cr3(__pa(pgdir))
-
 #define TASK_SIZE (PAGE_OFFSET)
-
 #define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 3))
-
 #define HAVE_ARCH_PICK_MMAP_LAYOUT
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IO_BITMAP_BITS 65536
 #define IO_BITMAP_BYTES (IO_BITMAP_BITS/8)
 #define IO_BITMAP_LONGS (IO_BITMAP_BYTES/sizeof(long))
 #define IO_BITMAP_OFFSET offsetof(struct tss_struct,io_bitmap)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define INVALID_IO_BITMAP_OFFSET 0x8000
 #define INVALID_IO_BITMAP_OFFSET_LAZY 0x9000
-
 struct i387_fsave_struct {
  long cwd;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long swd;
  long twd;
  long fip;
  long fcs;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long foo;
  long fos;
  long st_space[20];
  long status;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 struct i387_fxsave_struct {
  unsigned short cwd;
  unsigned short swd;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned short twd;
  unsigned short fop;
  long fip;
  long fcs;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long foo;
  long fos;
  long mxcsr;
  long mxcsr_mask;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long st_space[32];
  long xmm_space[32];
  long padding[56];
 } __attribute__ ((aligned (16)));
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct i387_soft_struct {
  long cwd;
  long swd;
  long twd;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long fip;
  long fcs;
  long foo;
  long fos;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long st_space[20];
  unsigned char ftop, changed, lookahead, no_update, rm, alimit;
  struct info *info;
  unsigned long entry_eip;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 union i387_union {
  struct i387_fsave_struct fsave;
  struct i387_fxsave_struct fxsave;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct i387_soft_struct soft;
 };
-
 typedef struct {
  unsigned long seg;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 } mm_segment_t;
-
 struct thread_struct;
-
 struct i386_hw_tss {
  unsigned short back_link,__blh;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long esp0;
  unsigned short ss0,__ss0h;
  unsigned long esp1;
  unsigned short ss1,__ss1h;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long esp2;
  unsigned short ss2,__ss2h;
  unsigned long __cr3;
  unsigned long eip;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long eflags;
  unsigned long eax,ecx,edx,ebx;
  unsigned long esp;
  unsigned long ebp;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long esi;
  unsigned long edi;
  unsigned short es, __esh;
  unsigned short cs, __csh;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned short ss, __ssh;
  unsigned short ds, __dsh;
  unsigned short fs, __fsh;
  unsigned short gs, __gsh;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned short ldt, __ldth;
  unsigned short trace, io_bitmap_base;
 } __attribute__((packed));
-
 struct tss_struct {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct i386_hw_tss x86_tss;
-
  unsigned long io_bitmap[IO_BITMAP_LONGS + 1];
-
  unsigned long io_bitmap_max;
  struct thread_struct *io_bitmap_owner;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long __cacheline_filler[35];
-
  unsigned long stack[64];
 } __attribute__((packed));
-
 #define ARCH_MIN_TASKALIGN 16
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct thread_struct {
-
  struct desc_struct tls_array[GDT_ENTRY_TLS_ENTRIES];
  unsigned long esp0;
  unsigned long sysenter_cs;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long eip;
  unsigned long esp;
  unsigned long fs;
  unsigned long gs;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long debugreg[8];
-
  unsigned long cr2, trap_no, error_code;
-
  union i387_union i387;
-
  struct vm86_struct __user * vm86_info;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long screen_bitmap;
  unsigned long v86flags, v86mask, saved_esp0;
  unsigned int saved_fs, saved_gs;
-
  unsigned long *io_bitmap_ptr;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long iopl;
-
  unsigned long io_bitmap_max;
 };
-
 #define INIT_THREAD {   .esp0 = sizeof(init_stack) + (long)&init_stack,   .vm86_info = NULL,   .sysenter_cs = __KERNEL_CS,   .io_bitmap_ptr = NULL,   .fs = __KERNEL_PERCPU,  }
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define INIT_TSS {   .x86_tss = {   .esp0 = sizeof(init_stack) + (long)&init_stack,   .ss0 = __KERNEL_DS,   .ss1 = __KERNEL_CS,   .io_bitmap_base = INVALID_IO_BITMAP_OFFSET,   },   .io_bitmap = { [ 0 ... IO_BITMAP_LONGS] = ~0 },  }
-
 #define start_thread(regs, new_eip, new_esp) do {   __asm__("movl %0,%%gs": :"r" (0));   regs->xfs = 0;   set_fs(USER_DS);   regs->xds = __USER_DS;   regs->xes = __USER_DS;   regs->xss = __USER_DS;   regs->xcs = __USER_CS;   regs->eip = new_eip;   regs->esp = new_esp;  } while (0)
-
 struct task_struct;
 struct mm_struct;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define THREAD_SIZE_LONGS (THREAD_SIZE/sizeof(unsigned long))
 #define KSTK_TOP(info)  ({   unsigned long *__ptr = (unsigned long *)(info);   (unsigned long)(&__ptr[THREAD_SIZE_LONGS]);  })
-
 #define task_pt_regs(task)  ({   struct pt_regs *__regs__;   __regs__ = (struct pt_regs *)(KSTK_TOP(task_stack_page(task))-8);   __regs__ - 1;  })
-
 #define KSTK_EIP(task) (task_pt_regs(task)->eip)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define KSTK_ESP(task) (task_pt_regs(task)->esp)
-
 struct microcode_header {
  unsigned int hdrver;
  unsigned int rev;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int date;
  unsigned int sig;
  unsigned int cksum;
  unsigned int ldrver;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int pf;
  unsigned int datasize;
  unsigned int totalsize;
  unsigned int reserved[3];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 struct microcode {
  struct microcode_header hdr;
  unsigned int bits[0];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 typedef struct microcode microcode_t;
 typedef struct microcode_header microcode_header_t;
-
 struct extended_signature {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int sig;
  unsigned int pf;
  unsigned int cksum;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct extended_sigtable {
  unsigned int count;
  unsigned int cksum;
  unsigned int reserved[3];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct extended_signature sigs[0];
 };
-
 #define cpu_relax() rep_nop()
 #define paravirt_enabled() 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __cpuid native_cpuid
 #define get_debugreg(var, register)   (var) = native_get_debugreg(register)
 #define set_debugreg(value, register)   native_set_debugreg(register, value)
 #define set_iopl_mask native_set_iopl_mask
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define GENERIC_NOP1 ".byte 0x90\n"
 #define GENERIC_NOP2 ".byte 0x89,0xf6\n"
 #define GENERIC_NOP3 ".byte 0x8d,0x76,0x00\n"
 #define GENERIC_NOP4 ".byte 0x8d,0x74,0x26,0x00\n"
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define GENERIC_NOP5 GENERIC_NOP1 GENERIC_NOP4
 #define GENERIC_NOP6 ".byte 0x8d,0xb6,0x00,0x00,0x00,0x00\n"
 #define GENERIC_NOP7 ".byte 0x8d,0xb4,0x26,0x00,0x00,0x00,0x00\n"
 #define GENERIC_NOP8 GENERIC_NOP1 GENERIC_NOP7
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define K8_NOP1 GENERIC_NOP1
 #define K8_NOP2 ".byte 0x66,0x90\n" 
 #define K8_NOP3 ".byte 0x66,0x66,0x90\n" 
 #define K8_NOP4 ".byte 0x66,0x66,0x66,0x90\n" 
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define K8_NOP5 K8_NOP3 K8_NOP2 
 #define K8_NOP6 K8_NOP3 K8_NOP3
 #define K8_NOP7 K8_NOP4 K8_NOP3
 #define K8_NOP8 K8_NOP4 K8_NOP4
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define K7_NOP1 GENERIC_NOP1
 #define K7_NOP2 ".byte 0x8b,0xc0\n" 
 #define K7_NOP3 ".byte 0x8d,0x04,0x20\n"
 #define K7_NOP4 ".byte 0x8d,0x44,0x20,0x00\n"
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define K7_NOP5 K7_NOP4 ASM_NOP1
 #define K7_NOP6 ".byte 0x8d,0x80,0,0,0,0\n"
 #define K7_NOP7 ".byte 0x8D,0x04,0x05,0,0,0,0\n"
 #define K7_NOP8 K7_NOP7 ASM_NOP1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define P6_NOP1 GENERIC_NOP1
 #define P6_NOP2 ".byte 0x66,0x90\n"
 #define P6_NOP3 ".byte 0x0f,0x1f,0x00\n"
 #define P6_NOP4 ".byte 0x0f,0x1f,0x40,0\n"
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define P6_NOP5 ".byte 0x0f,0x1f,0x44,0x00,0\n"
 #define P6_NOP6 ".byte 0x66,0x0f,0x1f,0x44,0x00,0\n"
 #define P6_NOP7 ".byte 0x0f,0x1f,0x80,0,0,0,0\n"
 #define P6_NOP8 ".byte 0x0f,0x1f,0x84,0x00,0,0,0,0\n"
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ASM_NOP1 GENERIC_NOP1
 #define ASM_NOP2 GENERIC_NOP2
 #define ASM_NOP3 GENERIC_NOP3
 #define ASM_NOP4 GENERIC_NOP4
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ASM_NOP5 GENERIC_NOP5
 #define ASM_NOP6 GENERIC_NOP6
 #define ASM_NOP7 GENERIC_NOP7
 #define ASM_NOP8 GENERIC_NOP8
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ASM_NOP_MAX 8
 #define ARCH_HAS_PREFETCH
 #define ARCH_HAS_PREFETCH
 #define ARCH_HAS_PREFETCHW
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ARCH_HAS_SPINLOCK_PREFETCH
 #define spin_lock_prefetch(x) prefetchw(x)
-
 #define cache_line_size() (boot_cpu_data.x86_cache_alignment)
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/ptrace-abi.h b/libc/kernel/arch-x86/asm/ptrace-abi.h
index 3e6ea08..7cd9425 100644
--- a/libc/kernel/arch-x86/asm/ptrace-abi.h
+++ b/libc/kernel/arch-x86/asm/ptrace-abi.h
@@ -7,82 +7,92 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_PTRACE_ABI_H
 #define _ASM_X86_PTRACE_ABI_H
-
 #ifdef __i386__
-
 #define EBX 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ECX 1
 #define EDX 2
 #define ESI 3
 #define EDI 4
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EBP 5
 #define EAX 6
 #define DS 7
 #define ES 8
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FS 9
 #define GS 10
 #define ORIG_EAX 11
 #define EIP 12
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CS 13
 #define EFL 14
 #define UESP 15
 #define SS 16
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FRAME_SIZE 17
-
 #else
-
 #if defined(__ASSEMBLY__) || defined(__FRAME_OFFSETS)
 #define R15 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define R14 8
 #define R13 16
 #define R12 24
 #define RBP 32
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define RBX 40
-
 #define R11 48
 #define R10 56
 #define R9 64
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define R8 72
 #define RAX 80
 #define RCX 88
 #define RDX 96
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define RSI 104
 #define RDI 112
 #define ORIG_RAX 120  
-
 #define RIP 128
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CS 136
 #define EFLAGS 144
 #define RSP 152
 #define SS 160
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ARGOFFSET R11
 #endif
-
 #define FRAME_SIZE 168
-
 #endif
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PTRACE_GETREGS 12
 #define PTRACE_SETREGS 13
 #define PTRACE_GETFPREGS 14
 #define PTRACE_SETFPREGS 15
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PTRACE_GETFPXREGS 18
 #define PTRACE_SETFPXREGS 19
-
 #define PTRACE_OLDSETOPTIONS 21
-
 #define PTRACE_GET_THREAD_AREA 25
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PTRACE_SET_THREAD_AREA 26
-
 #ifdef __x86_64__
 #define PTRACE_ARCH_PRCTL 30
 #else
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PTRACE_SYSEMU 31
 #define PTRACE_SYSEMU_SINGLESTEP 32
 #endif
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/ptrace.h b/libc/kernel/arch-x86/asm/ptrace.h
index 4743e0f..2560e5a 100644
--- a/libc/kernel/arch-x86/asm/ptrace.h
+++ b/libc/kernel/arch-x86/asm/ptrace.h
@@ -7,68 +7,75 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_PTRACE_H
 #define _ASM_X86_PTRACE_H
-
 #include <linux/compiler.h>  
 #include <asm/ptrace-abi.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #ifndef __ASSEMBLY__
-
 #ifdef __i386__
-
 struct pt_regs {
  long ebx;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long ecx;
  long edx;
  long esi;
  long edi;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long ebp;
  long eax;
  int xds;
  int xes;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  int xfs;
-
  long orig_eax;
  long eip;
  int xcs;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long eflags;
  long esp;
  int xss;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #else
-
 struct pt_regs {
  unsigned long r15;
  unsigned long r14;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long r13;
  unsigned long r12;
  unsigned long rbp;
  unsigned long rbx;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long r11;
  unsigned long r10;
  unsigned long r9;
  unsigned long r8;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long rax;
  unsigned long rcx;
  unsigned long rdx;
  unsigned long rsi;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long rdi;
  unsigned long orig_rax;
-
  unsigned long rip;
  unsigned long cs;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long eflags;
  unsigned long rsp;
  unsigned long ss;
-
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
 #endif
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/required-features.h b/libc/kernel/arch-x86/asm/required-features.h
index a96517a..df9d33c 100644
--- a/libc/kernel/arch-x86/asm/required-features.h
+++ b/libc/kernel/arch-x86/asm/required-features.h
@@ -7,38 +7,42 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_REQUIRED_FEATURES_H
 #define _ASM_REQUIRED_FEATURES_H 1
-
 #define NEED_FPU (1<<(X86_FEATURE_FPU & 31))
-
 #define NEED_PAE 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NEED_CX8 0
-
 #define NEED_CMOV 0
-
 #define NEED_3DNOW 0
-
 #define NEED_PSE 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NEED_MSR 0
 #define NEED_PGE 0
 #define NEED_FXSR 0
 #define NEED_XMM 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NEED_XMM2 0
 #define NEED_LM 0
-
 #define REQUIRED_MASK0 (NEED_FPU|NEED_PSE|NEED_MSR|NEED_PAE|  NEED_CX8|NEED_PGE|NEED_FXSR|NEED_CMOV|  NEED_XMM|NEED_XMM2)
 #define SSE_MASK (NEED_XMM|NEED_XMM2)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define REQUIRED_MASK1 (NEED_LM|NEED_3DNOW)
-
 #define REQUIRED_MASK2 0
 #define REQUIRED_MASK3 0
 #define REQUIRED_MASK4 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define REQUIRED_MASK5 0
 #define REQUIRED_MASK6 0
 #define REQUIRED_MASK7 0
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/resource.h b/libc/kernel/arch-x86/asm/resource.h
index 29d9e12..371adb5 100644
--- a/libc/kernel/arch-x86/asm/resource.h
+++ b/libc/kernel/arch-x86/asm/resource.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include <asm-generic/resource.h>
diff --git a/libc/kernel/arch-x86/asm/rwlock.h b/libc/kernel/arch-x86/asm/rwlock.h
index 3693542..82a96e0 100644
--- a/libc/kernel/arch-x86/asm/rwlock.h
+++ b/libc/kernel/arch-x86/asm/rwlock.h
@@ -7,12 +7,18 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_RWLOCK_H
 #define _ASM_X86_RWLOCK_H
-
 #define RW_LOCK_BIAS 0x01000000
 #define RW_LOCK_BIAS_STR "0x01000000"
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/scatterlist.h b/libc/kernel/arch-x86/asm/scatterlist.h
index fa4d0cc..376087f 100644
--- a/libc/kernel/arch-x86/asm/scatterlist.h
+++ b/libc/kernel/arch-x86/asm/scatterlist.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "scatterlist_64.h"
diff --git a/libc/kernel/arch-x86/asm/scatterlist_32.h b/libc/kernel/arch-x86/asm/scatterlist_32.h
index 29044c3..e3c777d 100644
--- a/libc/kernel/arch-x86/asm/scatterlist_32.h
+++ b/libc/kernel/arch-x86/asm/scatterlist_32.h
@@ -7,25 +7,29 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _I386_SCATTERLIST_H
 #define _I386_SCATTERLIST_H
-
 #include <asm/types.h>
-
 struct scatterlist {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long page_link;
  unsigned int offset;
  dma_addr_t dma_address;
  unsigned int length;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 #define ARCH_HAS_SG_CHAIN
-
 #define sg_dma_address(sg) ((sg)->dma_address)
 #define sg_dma_len(sg) ((sg)->length)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ISA_DMA_THRESHOLD (0x00ffffff)
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/sections.h b/libc/kernel/arch-x86/asm/sections.h
index a21da3e..7f35a59 100644
--- a/libc/kernel/arch-x86/asm/sections.h
+++ b/libc/kernel/arch-x86/asm/sections.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include <asm-generic/sections.h>
diff --git a/libc/kernel/arch-x86/asm/segment.h b/libc/kernel/arch-x86/asm/segment.h
index 6877a80..eeb7a1c 100644
--- a/libc/kernel/arch-x86/asm/segment.h
+++ b/libc/kernel/arch-x86/asm/segment.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "segment_64.h"
diff --git a/libc/kernel/arch-x86/asm/segment_32.h b/libc/kernel/arch-x86/asm/segment_32.h
index 54b312b..5d7d0f9 100644
--- a/libc/kernel/arch-x86/asm/segment_32.h
+++ b/libc/kernel/arch-x86/asm/segment_32.h
@@ -7,83 +7,75 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_SEGMENT_H
 #define _ASM_SEGMENT_H
-
 #define GDT_ENTRY_TLS_ENTRIES 3
 #define GDT_ENTRY_TLS_MIN 6
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define GDT_ENTRY_TLS_MAX (GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1)
-
 #define TLS_SIZE (GDT_ENTRY_TLS_ENTRIES * 8)
-
 #define GDT_ENTRY_DEFAULT_USER_CS 14
 #define __USER_CS (GDT_ENTRY_DEFAULT_USER_CS * 8 + 3)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define GDT_ENTRY_DEFAULT_USER_DS 15
 #define __USER_DS (GDT_ENTRY_DEFAULT_USER_DS * 8 + 3)
-
 #define GDT_ENTRY_KERNEL_BASE 12
-
 #define GDT_ENTRY_KERNEL_CS (GDT_ENTRY_KERNEL_BASE + 0)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __KERNEL_CS (GDT_ENTRY_KERNEL_CS * 8)
-
 #define GDT_ENTRY_KERNEL_DS (GDT_ENTRY_KERNEL_BASE + 1)
 #define __KERNEL_DS (GDT_ENTRY_KERNEL_DS * 8)
-
 #define GDT_ENTRY_TSS (GDT_ENTRY_KERNEL_BASE + 4)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define GDT_ENTRY_LDT (GDT_ENTRY_KERNEL_BASE + 5)
-
 #define GDT_ENTRY_PNPBIOS_BASE (GDT_ENTRY_KERNEL_BASE + 6)
 #define GDT_ENTRY_APMBIOS_BASE (GDT_ENTRY_KERNEL_BASE + 11)
-
 #define GDT_ENTRY_ESPFIX_SS (GDT_ENTRY_KERNEL_BASE + 14)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __ESPFIX_SS (GDT_ENTRY_ESPFIX_SS * 8)
-
 #define GDT_ENTRY_PERCPU (GDT_ENTRY_KERNEL_BASE + 15)
 #define __KERNEL_PERCPU 0
-
 #define GDT_ENTRY_DOUBLEFAULT_TSS 31
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define GDT_ENTRIES 32
 #define GDT_SIZE (GDT_ENTRIES * 8)
-
 #define GDT_ENTRY_BOOT_CS 2
 #define __BOOT_CS (GDT_ENTRY_BOOT_CS * 8)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define GDT_ENTRY_BOOT_DS (GDT_ENTRY_BOOT_CS + 1)
 #define __BOOT_DS (GDT_ENTRY_BOOT_DS * 8)
-
 #define GDT_ENTRY_PNPBIOS_CS32 (GDT_ENTRY_PNPBIOS_BASE + 0)
 #define GDT_ENTRY_PNPBIOS_CS16 (GDT_ENTRY_PNPBIOS_BASE + 1)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define GDT_ENTRY_PNPBIOS_DS (GDT_ENTRY_PNPBIOS_BASE + 2)
 #define GDT_ENTRY_PNPBIOS_TS1 (GDT_ENTRY_PNPBIOS_BASE + 3)
 #define GDT_ENTRY_PNPBIOS_TS2 (GDT_ENTRY_PNPBIOS_BASE + 4)
-
 #define PNP_CS32 (GDT_ENTRY_PNPBIOS_CS32 * 8)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PNP_CS16 (GDT_ENTRY_PNPBIOS_CS16 * 8)  
 #define PNP_DS (GDT_ENTRY_PNPBIOS_DS * 8)  
 #define PNP_TS1 (GDT_ENTRY_PNPBIOS_TS1 * 8)  
 #define PNP_TS2 (GDT_ENTRY_PNPBIOS_TS2 * 8)  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IDT_ENTRIES 256
-
 #define SEGMENT_RPL_MASK 0x3
-
 #define SEGMENT_TI_MASK 0x4
-
 #define USER_RPL 0x3
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SEGMENT_LDT 0x4
 #define SEGMENT_GDT 0x0
-
 #define get_kernel_rpl() 0
-
 #define SEGMENT_IS_KERNEL_CODE(x) (((x) & 0xfc) == GDT_ENTRY_KERNEL_CS * 8)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SEGMENT_IS_FLAT_CODE(x) (((x) & 0xec) == GDT_ENTRY_KERNEL_CS * 8)
-
 #define SEGMENT_IS_PNP_CODE(x) (((x) & 0xf4) == GDT_ENTRY_PNPBIOS_BASE * 8)
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/semaphore.h b/libc/kernel/arch-x86/asm/semaphore.h
index 8b4c595..6ee8244 100644
--- a/libc/kernel/arch-x86/asm/semaphore.h
+++ b/libc/kernel/arch-x86/asm/semaphore.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "semaphore_64.h"
diff --git a/libc/kernel/arch-x86/asm/semaphore_32.h b/libc/kernel/arch-x86/asm/semaphore_32.h
index babe779..7d48d0e 100644
--- a/libc/kernel/arch-x86/asm/semaphore_32.h
+++ b/libc/kernel/arch-x86/asm/semaphore_32.h
@@ -7,11 +7,17 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _I386_SEMAPHORE_H
 #define _I386_SEMAPHORE_H
-
 #include <linux/linkage.h>
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/sembuf.h b/libc/kernel/arch-x86/asm/sembuf.h
index 1695208..d1cb296 100644
--- a/libc/kernel/arch-x86/asm/sembuf.h
+++ b/libc/kernel/arch-x86/asm/sembuf.h
@@ -7,20 +7,28 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_SEMBUF_H
 #define _ASM_X86_SEMBUF_H
-
 struct semid64_ds {
  struct ipc64_perm sem_perm;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __kernel_time_t sem_otime;
  unsigned long __unused1;
  __kernel_time_t sem_ctime;
  unsigned long __unused2;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long sem_nsems;
  unsigned long __unused3;
  unsigned long __unused4;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/setup.h b/libc/kernel/arch-x86/asm/setup.h
index 696ed97..fe6ca0f 100644
--- a/libc/kernel/arch-x86/asm/setup.h
+++ b/libc/kernel/arch-x86/asm/setup.h
@@ -7,11 +7,17 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_SETUP_H
 #define _ASM_X86_SETUP_H
-
 #define COMMAND_LINE_SIZE 2048
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/shmbuf.h b/libc/kernel/arch-x86/asm/shmbuf.h
index 314ccb7..81cce3e 100644
--- a/libc/kernel/arch-x86/asm/shmbuf.h
+++ b/libc/kernel/arch-x86/asm/shmbuf.h
@@ -7,43 +7,55 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_SHMBUF_H
 #define _ASM_X86_SHMBUF_H
-
 struct shmid64_ds {
  struct ipc64_perm shm_perm;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  size_t shm_segsz;
  __kernel_time_t shm_atime;
 #ifdef __i386__
  unsigned long __unused1;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
  __kernel_time_t shm_dtime;
 #ifdef __i386__
  unsigned long __unused2;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
  __kernel_time_t shm_ctime;
 #ifdef __i386__
  unsigned long __unused3;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
  __kernel_pid_t shm_cpid;
  __kernel_pid_t shm_lpid;
  unsigned long shm_nattch;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long __unused4;
  unsigned long __unused5;
 };
-
 struct shminfo64 {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long shmmax;
  unsigned long shmmin;
  unsigned long shmmni;
  unsigned long shmseg;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long shmall;
  unsigned long __unused1;
  unsigned long __unused2;
  unsigned long __unused3;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long __unused4;
 };
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/shmparam.h b/libc/kernel/arch-x86/asm/shmparam.h
index e667ba1..43fd83e 100644
--- a/libc/kernel/arch-x86/asm/shmparam.h
+++ b/libc/kernel/arch-x86/asm/shmparam.h
@@ -7,11 +7,17 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_SHMPARAM_H
 #define _ASM_X86_SHMPARAM_H
-
 #define SHMLBA PAGE_SIZE  
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/sigcontext.h b/libc/kernel/arch-x86/asm/sigcontext.h
index a8f76f0..b0b5fd4 100644
--- a/libc/kernel/arch-x86/asm/sigcontext.h
+++ b/libc/kernel/arch-x86/asm/sigcontext.h
@@ -7,126 +7,144 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_SIGCONTEXT_H
 #define _ASM_X86_SIGCONTEXT_H
-
 #include <linux/compiler.h>
 #include <asm/types.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #ifdef __i386__
-
 struct _fpreg {
  unsigned short significand[4];
  unsigned short exponent;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 struct _fpxreg {
  unsigned short significand[4];
  unsigned short exponent;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned short padding[3];
 };
-
 struct _xmmreg {
  unsigned long element[4];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 struct _fpstate {
-
  unsigned long cw;
  unsigned long sw;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long tag;
  unsigned long ipoff;
  unsigned long cssel;
  unsigned long dataoff;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long datasel;
  struct _fpreg _st[8];
  unsigned short status;
  unsigned short magic;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long _fxsr_env[6];
  unsigned long mxcsr;
  unsigned long reserved;
  struct _fpxreg _fxsr_st[8];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct _xmmreg _xmm[8];
  unsigned long padding[56];
 };
-
 #define X86_FXSR_MAGIC 0x0000
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct sigcontext {
  unsigned short gs, __gsh;
  unsigned short fs, __fsh;
  unsigned short es, __esh;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned short ds, __dsh;
  unsigned long edi;
  unsigned long esi;
  unsigned long ebp;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long esp;
  unsigned long ebx;
  unsigned long edx;
  unsigned long ecx;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long eax;
  unsigned long trapno;
  unsigned long err;
  unsigned long eip;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned short cs, __csh;
  unsigned long eflags;
  unsigned long esp_at_signal;
  unsigned short ss, __ssh;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct _fpstate __user * fpstate;
  unsigned long oldmask;
  unsigned long cr2;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #else
-
 struct _fpstate {
  __u16 cwd;
  __u16 swd;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u16 twd;
  __u16 fop;
  __u64 rip;
  __u64 rdp;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u32 mxcsr;
  __u32 mxcsr_mask;
  __u32 st_space[32];
  __u32 xmm_space[64];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u32 reserved2[24];
 };
-
 struct sigcontext {
  unsigned long r8;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long r9;
  unsigned long r10;
  unsigned long r11;
  unsigned long r12;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long r13;
  unsigned long r14;
  unsigned long r15;
  unsigned long rdi;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long rsi;
  unsigned long rbp;
  unsigned long rbx;
  unsigned long rdx;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long rax;
  unsigned long rcx;
  unsigned long rsp;
  unsigned long rip;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long eflags;
  unsigned short cs;
  unsigned short gs;
  unsigned short fs;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned short __pad0;
  unsigned long err;
  unsigned long trapno;
  unsigned long oldmask;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long cr2;
  struct _fpstate __user *fpstate;
  unsigned long reserved1[8];
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/siginfo.h b/libc/kernel/arch-x86/asm/siginfo.h
index 0d21d22..6459be7 100644
--- a/libc/kernel/arch-x86/asm/siginfo.h
+++ b/libc/kernel/arch-x86/asm/siginfo.h
@@ -7,15 +7,20 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_SIGINFO_H
 #define _ASM_X86_SIGINFO_H
-
 #ifdef __x86_64__
 #define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int))
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
-
 #include <asm-generic/siginfo.h>
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/signal.h b/libc/kernel/arch-x86/asm/signal.h
index 6d84eab..a15028c 100644
--- a/libc/kernel/arch-x86/asm/signal.h
+++ b/libc/kernel/arch-x86/asm/signal.h
@@ -7,121 +7,127 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_SIGNAL_H
 #define _ASM_X86_SIGNAL_H
-
 #ifndef __ASSEMBLY__
 #include <linux/types.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <linux/time.h>
 #include <linux/compiler.h>
-
 struct siginfo;
-
 #define NSIG 32
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef unsigned long sigset_t;
-
 #endif
-
 #define SIGHUP 1
 #define SIGINT 2
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIGQUIT 3
 #define SIGILL 4
 #define SIGTRAP 5
 #define SIGABRT 6
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIGIOT 6
 #define SIGBUS 7
 #define SIGFPE 8
 #define SIGKILL 9
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIGUSR1 10
 #define SIGSEGV 11
 #define SIGUSR2 12
 #define SIGPIPE 13
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIGALRM 14
 #define SIGTERM 15
 #define SIGSTKFLT 16
 #define SIGCHLD 17
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIGCONT 18
 #define SIGSTOP 19
 #define SIGTSTP 20
 #define SIGTTIN 21
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIGTTOU 22
 #define SIGURG 23
 #define SIGXCPU 24
 #define SIGXFSZ 25
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIGVTALRM 26
 #define SIGPROF 27
 #define SIGWINCH 28
 #define SIGIO 29
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIGPOLL SIGIO
-
 #define SIGPWR 30
 #define SIGSYS 31
 #define SIGUNUSED 31
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIGRTMIN 32
 #define SIGRTMAX _NSIG
-
 #define SA_NOCLDSTOP 0x00000001u
 #define SA_NOCLDWAIT 0x00000002u
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SA_SIGINFO 0x00000004u
 #define SA_ONSTACK 0x08000000u
 #define SA_RESTART 0x10000000u
 #define SA_NODEFER 0x40000000u
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SA_RESETHAND 0x80000000u
-
 #define SA_NOMASK SA_NODEFER
 #define SA_ONESHOT SA_RESETHAND
-
 #define SA_RESTORER 0x04000000
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SS_ONSTACK 1
 #define SS_DISABLE 2
-
 #define MINSIGSTKSZ 2048
 #define SIGSTKSZ 8192
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm-generic/signal.h>
-
 #ifndef __ASSEMBLY__
-
 #ifdef __i386__
-
 struct sigaction {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  union {
  __sighandler_t _sa_handler;
  void (*_sa_sigaction)(int, struct siginfo *, void *);
  } _u;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  sigset_t sa_mask;
  unsigned long sa_flags;
  void (*sa_restorer)(void);
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define sa_handler _u._sa_handler
 #define sa_sigaction _u._sa_sigaction
-
 #else
-
 struct sigaction {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __sighandler_t sa_handler;
  unsigned long sa_flags;
  __sigrestore_t sa_restorer;
  sigset_t sa_mask;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 struct k_sigaction {
  struct sigaction sa;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
-
 typedef struct sigaltstack {
  void __user *ss_sp;
  int ss_flags;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  size_t ss_size;
 } stack_t;
-
 #endif
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/smp.h b/libc/kernel/arch-x86/asm/smp.h
index 40d4601..c69e3ef 100644
--- a/libc/kernel/arch-x86/asm/smp.h
+++ b/libc/kernel/arch-x86/asm/smp.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "smp_64.h"
diff --git a/libc/kernel/arch-x86/asm/smp_32.h b/libc/kernel/arch-x86/asm/smp_32.h
index f093a24..e428b7b 100644
--- a/libc/kernel/arch-x86/asm/smp_32.h
+++ b/libc/kernel/arch-x86/asm/smp_32.h
@@ -7,28 +7,30 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ASM_SMP_H
 #define __ASM_SMP_H
-
 #ifndef __ASSEMBLY__
 #include <linux/kernel.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <linux/threads.h>
 #include <linux/cpumask.h>
 #endif
-
 #define BAD_APICID 0xFFu
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define safe_smp_processor_id() 0
 #define cpu_physical_id(cpu) boot_cpu_physical_apicid
-
 #define NO_PROC_ID 0xFF  
-
 #ifndef __ASSEMBLY__
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define hard_smp_processor_id() 0
-
 #endif
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/socket.h b/libc/kernel/arch-x86/asm/socket.h
index 27d243f..b520169 100644
--- a/libc/kernel/arch-x86/asm/socket.h
+++ b/libc/kernel/arch-x86/asm/socket.h
@@ -7,57 +7,63 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_SOCKET_H
 #define _ASM_SOCKET_H
-
 #include <asm/sockios.h>
-
 #define SOL_SOCKET 1
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SO_DEBUG 1
 #define SO_REUSEADDR 2
 #define SO_TYPE 3
 #define SO_ERROR 4
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SO_DONTROUTE 5
 #define SO_BROADCAST 6
 #define SO_SNDBUF 7
 #define SO_RCVBUF 8
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SO_SNDBUFFORCE 32
 #define SO_RCVBUFFORCE 33
 #define SO_KEEPALIVE 9
 #define SO_OOBINLINE 10
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SO_NO_CHECK 11
 #define SO_PRIORITY 12
 #define SO_LINGER 13
 #define SO_BSDCOMPAT 14
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SO_PASSCRED 16
 #define SO_PEERCRED 17
 #define SO_RCVLOWAT 18
 #define SO_SNDLOWAT 19
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SO_RCVTIMEO 20
 #define SO_SNDTIMEO 21
-
 #define SO_SECURITY_AUTHENTICATION 22
 #define SO_SECURITY_ENCRYPTION_TRANSPORT 23
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SO_SECURITY_ENCRYPTION_NETWORK 24
-
 #define SO_BINDTODEVICE 25
-
 #define SO_ATTACH_FILTER 26
 #define SO_DETACH_FILTER 27
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SO_PEERNAME 28
 #define SO_TIMESTAMP 29
 #define SCM_TIMESTAMP SO_TIMESTAMP
-
 #define SO_ACCEPTCONN 30
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SO_PEERSEC 31
 #define SO_PASSSEC 34
 #define SO_TIMESTAMPNS 35
 #define SCM_TIMESTAMPNS SO_TIMESTAMPNS
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/sockios.h b/libc/kernel/arch-x86/asm/sockios.h
index ebdfa98..d8bd1a3 100644
--- a/libc/kernel/arch-x86/asm/sockios.h
+++ b/libc/kernel/arch-x86/asm/sockios.h
@@ -7,17 +7,24 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_SOCKIOS_H
 #define _ASM_X86_SOCKIOS_H
-
 #define FIOSETOWN 0x8901
 #define SIOCSPGRP 0x8902
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FIOGETOWN 0x8903
 #define SIOCGPGRP 0x8904
 #define SIOCATMARK 0x8905
 #define SIOCGSTAMP 0x8906  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIOCGSTAMPNS 0x8907  
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/spinlock.h b/libc/kernel/arch-x86/asm/spinlock.h
index 10d123a..4c0f30e 100644
--- a/libc/kernel/arch-x86/asm/spinlock.h
+++ b/libc/kernel/arch-x86/asm/spinlock.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "spinlock_64.h"
diff --git a/libc/kernel/arch-x86/asm/spinlock_32.h b/libc/kernel/arch-x86/asm/spinlock_32.h
index 171783e..5d2eb05 100644
--- a/libc/kernel/arch-x86/asm/spinlock_32.h
+++ b/libc/kernel/arch-x86/asm/spinlock_32.h
@@ -7,23 +7,30 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ASM_SPINLOCK_H
 #define __ASM_SPINLOCK_H
-
 #include <asm/atomic.h>
 #include <asm/rwlock.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/page.h>
 #include <asm/processor.h>
 #include <linux/compiler.h>
-
 #define CLI_STRING "cli"
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define STI_STRING "sti"
 #define CLI_STI_CLOBBERS
 #define CLI_STI_INPUT_ARGS
-
 #define _raw_spin_relax(lock) cpu_relax()
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define _raw_read_relax(lock) cpu_relax()
 #define _raw_write_relax(lock) cpu_relax()
 #endif
diff --git a/libc/kernel/arch-x86/asm/spinlock_types.h b/libc/kernel/arch-x86/asm/spinlock_types.h
index ab914c4..9af3cce 100644
--- a/libc/kernel/arch-x86/asm/spinlock_types.h
+++ b/libc/kernel/arch-x86/asm/spinlock_types.h
@@ -7,25 +7,29 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ASM_SPINLOCK_TYPES_H
 #define __ASM_SPINLOCK_TYPES_H
-
 #ifndef __LINUX_SPINLOCK_TYPES_H
 #error "please don't include this file directly"
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
-
 typedef struct {
  unsigned int slock;
 } raw_spinlock_t;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __RAW_SPIN_LOCK_UNLOCKED { 1 }
-
 typedef struct {
  unsigned int lock;
 } raw_rwlock_t;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __RAW_RW_LOCK_UNLOCKED { RW_LOCK_BIAS }
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/stat.h b/libc/kernel/arch-x86/asm/stat.h
index 837d716..a4ccbe8 100644
--- a/libc/kernel/arch-x86/asm/stat.h
+++ b/libc/kernel/arch-x86/asm/stat.h
@@ -7,114 +7,123 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_STAT_H
 #define _ASM_X86_STAT_H
-
 #define STAT_HAVE_NSEC 1
-
 #ifdef __i386__
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct stat {
  unsigned long st_dev;
  unsigned long st_ino;
  unsigned short st_mode;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned short st_nlink;
  unsigned short st_uid;
  unsigned short st_gid;
  unsigned long st_rdev;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long st_size;
  unsigned long st_blksize;
  unsigned long st_blocks;
  unsigned long st_atime;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long st_atime_nsec;
  unsigned long st_mtime;
  unsigned long st_mtime_nsec;
  unsigned long st_ctime;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long st_ctime_nsec;
  unsigned long __unused4;
  unsigned long __unused5;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define STAT64_HAS_BROKEN_ST_INO 1
-
 struct stat64 {
  unsigned long long st_dev;
  unsigned char __pad0[4];
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long __st_ino;
-
  unsigned int st_mode;
  unsigned int st_nlink;
-
  unsigned long st_uid;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long st_gid;
-
  unsigned long long st_rdev;
  unsigned char __pad3[4];
-
  long long st_size;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long st_blksize;
-
  unsigned long long st_blocks;
-
  unsigned long st_atime;
  unsigned long st_atime_nsec;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long st_mtime;
  unsigned int st_mtime_nsec;
-
  unsigned long st_ctime;
  unsigned long st_ctime_nsec;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long long st_ino;
 };
-
 #else
-
 struct stat {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long st_dev;
  unsigned long st_ino;
  unsigned long st_nlink;
-
  unsigned int st_mode;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int st_uid;
  unsigned int st_gid;
  unsigned int __pad0;
  unsigned long st_rdev;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long st_size;
  long st_blksize;
  long st_blocks;
-
  unsigned long st_atime;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long st_atime_nsec;
  unsigned long st_mtime;
  unsigned long st_mtime_nsec;
  unsigned long st_ctime;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long st_ctime_nsec;
  long __unused[3];
 };
 #endif
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct __old_kernel_stat {
  unsigned short st_dev;
  unsigned short st_ino;
  unsigned short st_mode;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned short st_nlink;
  unsigned short st_uid;
  unsigned short st_gid;
  unsigned short st_rdev;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #ifdef __i386__
  unsigned long st_size;
  unsigned long st_atime;
  unsigned long st_mtime;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long st_ctime;
 #else
  unsigned int st_size;
  unsigned int st_atime;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int st_mtime;
  unsigned int st_ctime;
 #endif
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/statfs.h b/libc/kernel/arch-x86/asm/statfs.h
index 592d864..f137d17 100644
--- a/libc/kernel/arch-x86/asm/statfs.h
+++ b/libc/kernel/arch-x86/asm/statfs.h
@@ -7,56 +7,69 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_STATFS_H
 #define _ASM_X86_STATFS_H
-
 #ifdef __i386__
 #include <asm-generic/statfs.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #else
-
 struct statfs {
  long f_type;
  long f_bsize;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long f_blocks;
  long f_bfree;
  long f_bavail;
  long f_files;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long f_ffree;
  __kernel_fsid_t f_fsid;
  long f_namelen;
  long f_frsize;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long f_spare[5];
 };
-
 struct statfs64 {
  long f_type;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long f_bsize;
  long f_blocks;
  long f_bfree;
  long f_bavail;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long f_files;
  long f_ffree;
  __kernel_fsid_t f_fsid;
  long f_namelen;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long f_frsize;
  long f_spare[5];
 };
-
 struct compat_statfs64 {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u32 f_type;
  __u32 f_bsize;
  __u64 f_blocks;
  __u64 f_bfree;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u64 f_bavail;
  __u64 f_files;
  __u64 f_ffree;
  __kernel_fsid_t f_fsid;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u32 f_namelen;
  __u32 f_frsize;
  __u32 f_spare[5];
 } __attribute__((packed));
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
 #endif
diff --git a/libc/kernel/arch-x86/asm/string.h b/libc/kernel/arch-x86/asm/string.h
index 92fa291..e6cda34 100644
--- a/libc/kernel/arch-x86/asm/string.h
+++ b/libc/kernel/arch-x86/asm/string.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "string_64.h"
diff --git a/libc/kernel/arch-x86/asm/string_32.h b/libc/kernel/arch-x86/asm/string_32.h
index 58a72d7..3063858 100644
--- a/libc/kernel/arch-x86/asm/string_32.h
+++ b/libc/kernel/arch-x86/asm/string_32.h
@@ -7,9 +7,15 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _I386_STRING_H_
 #define _I386_STRING_H_
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/swiotlb.h b/libc/kernel/arch-x86/asm/swiotlb.h
index 5ee37b3..79bd3e7 100644
--- a/libc/kernel/arch-x86/asm/swiotlb.h
+++ b/libc/kernel/arch-x86/asm/swiotlb.h
@@ -7,13 +7,18 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_SWIOTLB_H
 #define _ASM_SWIOTLB_H 1
-
 #include <asm/dma-mapping.h>
-
 #define swiotlb 0
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/system.h b/libc/kernel/arch-x86/asm/system.h
index 834193b..e4faf67 100644
--- a/libc/kernel/arch-x86/asm/system.h
+++ b/libc/kernel/arch-x86/asm/system.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "system_64.h"
diff --git a/libc/kernel/arch-x86/asm/system_32.h b/libc/kernel/arch-x86/asm/system_32.h
index d799ae6..ec01cc6 100644
--- a/libc/kernel/arch-x86/asm/system_32.h
+++ b/libc/kernel/arch-x86/asm/system_32.h
@@ -7,27 +7,35 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __ASM_SYSTEM_H
 #define __ASM_SYSTEM_H
-
 #include <linux/kernel.h>
 #include <asm/segment.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/cpufeature.h>
 #include <asm/cmpxchg.h>
-
 #define nop() __asm__ __volatile__ ("nop")
 #define mb() alternative("lock; addl $0,0(%%esp)", "mfence", X86_FEATURE_XMM2)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define rmb() alternative("lock; addl $0,0(%%esp)", "lfence", X86_FEATURE_XMM2)
 #define wmb() alternative("lock; addl $0,0(%%esp)", "sfence", X86_FEATURE_XMM)
 #define read_barrier_depends() do { } while(0)
 #define smp_mb() barrier()
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define smp_rmb() barrier()
 #define smp_wmb() barrier()
 #define smp_read_barrier_depends() do { } while(0)
 #define set_mb(var, value) do { var = value; barrier(); } while (0)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <linux/irqflags.h>
 #define HAVE_DISABLE_HLT
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/termbits.h b/libc/kernel/arch-x86/asm/termbits.h
index 6d7c5e8..0d03ddd 100644
--- a/libc/kernel/arch-x86/asm/termbits.h
+++ b/libc/kernel/arch-x86/asm/termbits.h
@@ -7,195 +7,230 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_TERMBITS_H
 #define _ASM_X86_TERMBITS_H
-
 #include <linux/posix_types.h>
-
 typedef unsigned char cc_t;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef unsigned int speed_t;
 typedef unsigned int tcflag_t;
-
 #define NCCS 19
 struct termios {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  tcflag_t c_iflag;
  tcflag_t c_oflag;
  tcflag_t c_cflag;
  tcflag_t c_lflag;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  cc_t c_line;
  cc_t c_cc[NCCS];
 };
-
 struct termios2 {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  tcflag_t c_iflag;
  tcflag_t c_oflag;
  tcflag_t c_cflag;
  tcflag_t c_lflag;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  cc_t c_line;
  cc_t c_cc[NCCS];
  speed_t c_ispeed;
  speed_t c_ospeed;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 struct ktermios {
  tcflag_t c_iflag;
  tcflag_t c_oflag;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  tcflag_t c_cflag;
  tcflag_t c_lflag;
  cc_t c_line;
  cc_t c_cc[NCCS];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  speed_t c_ispeed;
  speed_t c_ospeed;
 };
-
 #define VINTR 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VQUIT 1
 #define VERASE 2
 #define VKILL 3
 #define VEOF 4
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VTIME 5
 #define VMIN 6
 #define VSWTC 7
 #define VSTART 8
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VSTOP 9
 #define VSUSP 10
 #define VEOL 11
 #define VREPRINT 12
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VDISCARD 13
 #define VWERASE 14
 #define VLNEXT 15
 #define VEOL2 16
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IGNBRK 0000001
 #define BRKINT 0000002
 #define IGNPAR 0000004
 #define PARMRK 0000010
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define INPCK 0000020
 #define ISTRIP 0000040
 #define INLCR 0000100
 #define IGNCR 0000200
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ICRNL 0000400
 #define IUCLC 0001000
 #define IXON 0002000
 #define IXANY 0004000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IXOFF 0010000
 #define IMAXBEL 0020000
 #define IUTF8 0040000
-
 #define OPOST 0000001
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define OLCUC 0000002
 #define ONLCR 0000004
 #define OCRNL 0000010
 #define ONOCR 0000020
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ONLRET 0000040
 #define OFILL 0000100
 #define OFDEL 0000200
 #define NLDLY 0000400
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NL0 0000000
 #define NL1 0000400
 #define CRDLY 0003000
 #define CR0 0000000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CR1 0001000
 #define CR2 0002000
 #define CR3 0003000
 #define TABDLY 0014000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TAB0 0000000
 #define TAB1 0004000
 #define TAB2 0010000
 #define TAB3 0014000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define XTABS 0014000
 #define BSDLY 0020000
 #define BS0 0000000
 #define BS1 0020000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VTDLY 0040000
 #define VT0 0000000
 #define VT1 0040000
 #define FFDLY 0100000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FF0 0000000
 #define FF1 0100000
-
 #define CBAUD 0010017
 #define B0 0000000  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define B50 0000001
 #define B75 0000002
 #define B110 0000003
 #define B134 0000004
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define B150 0000005
 #define B200 0000006
 #define B300 0000007
 #define B600 0000010
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define B1200 0000011
 #define B1800 0000012
 #define B2400 0000013
 #define B4800 0000014
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define B9600 0000015
 #define B19200 0000016
 #define B38400 0000017
 #define EXTA B19200
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EXTB B38400
 #define CSIZE 0000060
 #define CS5 0000000
 #define CS6 0000020
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CS7 0000040
 #define CS8 0000060
 #define CSTOPB 0000100
 #define CREAD 0000200
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PARENB 0000400
 #define PARODD 0001000
 #define HUPCL 0002000
 #define CLOCAL 0004000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CBAUDEX 0010000
 #define BOTHER 0010000  
 #define B57600 0010001
 #define B115200 0010002
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define B230400 0010003
 #define B460800 0010004
 #define B500000 0010005
 #define B576000 0010006
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define B921600 0010007
 #define B1000000 0010010
 #define B1152000 0010011
 #define B1500000 0010012
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define B2000000 0010013
 #define B2500000 0010014
 #define B3000000 0010015
 #define B3500000 0010016
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define B4000000 0010017
 #define CIBAUD 002003600000  
 #define CMSPAR 010000000000  
 #define CRTSCTS 020000000000  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IBSHIFT 16  
-
 #define ISIG 0000001
 #define ICANON 0000002
 #define XCASE 0000004
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ECHO 0000010
 #define ECHOE 0000020
 #define ECHOK 0000040
 #define ECHONL 0000100
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NOFLSH 0000200
 #define TOSTOP 0000400
 #define ECHOCTL 0001000
 #define ECHOPRT 0002000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ECHOKE 0004000
 #define FLUSHO 0010000
 #define PENDIN 0040000
 #define IEXTEN 0100000
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TCOOFF 0
 #define TCOON 1
 #define TCIOFF 2
 #define TCION 3
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TCIFLUSH 0
 #define TCOFLUSH 1
 #define TCIOFLUSH 2
-
 #define TCSANOW 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TCSADRAIN 1
 #define TCSAFLUSH 2
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/termios.h b/libc/kernel/arch-x86/asm/termios.h
index 6542c78..2aca2fc 100644
--- a/libc/kernel/arch-x86/asm/termios.h
+++ b/libc/kernel/arch-x86/asm/termios.h
@@ -7,61 +7,94 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_TERMIOS_H
 #define _ASM_X86_TERMIOS_H
-
 #include <asm/termbits.h>
 #include <asm/ioctls.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct winsize {
  unsigned short ws_row;
  unsigned short ws_col;
  unsigned short ws_xpixel;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned short ws_ypixel;
 };
-
 #define NCC 8
 struct termio {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned short c_iflag;
  unsigned short c_oflag;
  unsigned short c_cflag;
  unsigned short c_lflag;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned char c_line;
  unsigned char c_cc[NCC];
 };
-
 #define TIOCM_LE 0x001
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TIOCM_DTR 0x002
 #define TIOCM_RTS 0x004
 #define TIOCM_ST 0x008
 #define TIOCM_SR 0x010
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TIOCM_CTS 0x020
 #define TIOCM_CAR 0x040
 #define TIOCM_RNG 0x080
 #define TIOCM_DSR 0x100
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TIOCM_CD TIOCM_CAR
 #define TIOCM_RI TIOCM_RNG
 #define TIOCM_OUT1 0x2000
 #define TIOCM_OUT2 0x4000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TIOCM_LOOP 0x8000
-
 #define N_TTY 0
 #define N_SLIP 1
 #define N_MOUSE 2
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define N_PPP 3
+#define N_STRIP 4
+#define N_AX25 5
+#define N_X25 6
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define N_6PACK 7
+#define N_MASC 8
+#define N_R3964 9
+#define N_PROFIBUS_FDL 10
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define N_IRDA 11
+#define N_SMSBLOCK 12
+#define N_HDLC 13
+#define N_SYNC_PPP 14
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define N_HCI 15
+#define N_TTY 0
+#define N_SLIP 1
+#define N_MOUSE 2
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define N_PPP 3
 #define N_STRIP 4
 #define N_AX25 5
 #define N_X25 6  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define N_6PACK 7
 #define N_MASC 8  
 #define N_R3964 9  
 #define N_PROFIBUS_FDL 10  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define N_IRDA 11  
 #define N_SMSBLOCK 12  
 #define N_HDLC 13  
 #define N_SYNC_PPP 14
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define N_HCI 15  
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/thread_info.h b/libc/kernel/arch-x86/asm/thread_info.h
index ff46b08..05d12e4 100644
--- a/libc/kernel/arch-x86/asm/thread_info.h
+++ b/libc/kernel/arch-x86/asm/thread_info.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "thread_info_64.h"
diff --git a/libc/kernel/arch-x86/asm/thread_info_32.h b/libc/kernel/arch-x86/asm/thread_info_32.h
index 5664ef8..07fc66b 100644
--- a/libc/kernel/arch-x86/asm/thread_info_32.h
+++ b/libc/kernel/arch-x86/asm/thread_info_32.h
@@ -7,9 +7,15 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_THREAD_INFO_H
 #define _ASM_THREAD_INFO_H
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/tlbflush.h b/libc/kernel/arch-x86/asm/tlbflush.h
index fd6b226..fa924b6 100644
--- a/libc/kernel/arch-x86/asm/tlbflush.h
+++ b/libc/kernel/arch-x86/asm/tlbflush.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "tlbflush_64.h"
diff --git a/libc/kernel/arch-x86/asm/tlbflush_32.h b/libc/kernel/arch-x86/asm/tlbflush_32.h
index 8ebff80..e0ab132 100644
--- a/libc/kernel/arch-x86/asm/tlbflush_32.h
+++ b/libc/kernel/arch-x86/asm/tlbflush_32.h
@@ -7,37 +7,37 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _I386_TLBFLUSH_H
 #define _I386_TLBFLUSH_H
-
 #include <linux/mm.h>
 #include <asm/processor.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __flush_tlb() __native_flush_tlb()
 #define __flush_tlb_global() __native_flush_tlb_global()
 #define __flush_tlb_single(addr) __native_flush_tlb_single(addr)
-
 #define __native_flush_tlb()   do {   unsigned int tmpreg;     __asm__ __volatile__(   "movl %%cr3, %0;              \n"   "movl %0, %%cr3;  # flush TLB \n"   : "=r" (tmpreg)   :: "memory");   } while (0)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __native_flush_tlb_global()   do {   unsigned int tmpreg, cr4, cr4_orig;     __asm__ __volatile__(   "movl %%cr4, %2;  # turn off PGE     \n"   "movl %2, %1;                        \n"   "andl %3, %1;                        \n"   "movl %1, %%cr4;                     \n"   "movl %%cr3, %0;                     \n"   "movl %0, %%cr3;  # flush TLB        \n"   "movl %2, %%cr4;  # turn PGE back on \n"   : "=&r" (tmpreg), "=&r" (cr4), "=&r" (cr4_orig)   : "i" (~X86_CR4_PGE)   : "memory");   } while (0)
-
 #define __native_flush_tlb_single(addr)   __asm__ __volatile__("invlpg (%0)" ::"r" (addr) : "memory")
-
 #define __flush_tlb_all()   do {   if (cpu_has_pge)   __flush_tlb_global();   else   __flush_tlb();   } while (0)
-
 #define cpu_has_invlpg (boot_cpu_data.x86 > 3)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __flush_tlb_one(addr)   do {   if (cpu_has_invlpg)   __flush_tlb_single(addr);   else   __flush_tlb();   } while (0)
-
 #define TLB_FLUSH_ALL 0xffffffff
-
 #include <linux/sched.h>
-
 #define flush_tlb() __flush_tlb()
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define flush_tlb_all() __flush_tlb_all()
 #define local_flush_tlb() __flush_tlb()
-
 #define flush_tlb_others(mask, mm, va)   native_flush_tlb_others(&mask, mm, va)
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/arch-x86/asm/tsc.h b/libc/kernel/arch-x86/asm/tsc.h
index 2528cd1..e99a1a5 100644
--- a/libc/kernel/arch-x86/asm/tsc.h
+++ b/libc/kernel/arch-x86/asm/tsc.h
@@ -7,16 +7,20 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_TSC_H
 #define _ASM_X86_TSC_H
-
 #include <asm/processor.h>
-
 #define NS_SCALE 10  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define US_SCALE 32  
-
 typedef unsigned long long cycles_t;
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/types.h b/libc/kernel/arch-x86/asm/types.h
index 4af92b0..f5aa99e 100644
--- a/libc/kernel/arch-x86/asm/types.h
+++ b/libc/kernel/arch-x86/asm/types.h
@@ -7,34 +7,38 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_TYPES_H
 #define _ASM_X86_TYPES_H
-
 #ifndef __ASSEMBLY__
-
 typedef unsigned short umode_t;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef __signed__ char __s8;
 typedef unsigned char __u8;
-
 typedef __signed__ short __s16;
 typedef unsigned short __u16;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef __signed__ int __s32;
 typedef unsigned int __u32;
-
 #ifdef __i386__
 #ifdef __GNUC__
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 __extension__ typedef __signed__ long long __s64;
 __extension__ typedef unsigned long long __u64;
 #endif
 #else
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef __signed__ long long __s64;
 typedef unsigned long long __u64;
 #endif
-
 #endif
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/uaccess.h b/libc/kernel/arch-x86/asm/uaccess.h
index b2bec69..124e7e1 100644
--- a/libc/kernel/arch-x86/asm/uaccess.h
+++ b/libc/kernel/arch-x86/asm/uaccess.h
@@ -7,6 +7,13 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #include "uaccess_64.h"
diff --git a/libc/kernel/arch-x86/asm/uaccess_32.h b/libc/kernel/arch-x86/asm/uaccess_32.h
index 9827fc4..47e4dcd 100644
--- a/libc/kernel/arch-x86/asm/uaccess_32.h
+++ b/libc/kernel/arch-x86/asm/uaccess_32.h
@@ -7,77 +7,68 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __i386_UACCESS_H
 #define __i386_UACCESS_H
-
 #include <linux/errno.h>
 #include <linux/thread_info.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <linux/prefetch.h>
 #include <linux/string.h>
 #include <asm/page.h>
-
 #define VERIFY_READ 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VERIFY_WRITE 1
-
 #define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
-
 #define KERNEL_DS MAKE_MM_SEG(0xFFFFFFFFUL)
 #define USER_DS MAKE_MM_SEG(PAGE_OFFSET)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define get_ds() (KERNEL_DS)
 #define get_fs() (current_thread_info()->addr_limit)
 #define set_fs(x) (current_thread_info()->addr_limit = (x))
-
 #define segment_eq(a,b) ((a).seg == (b).seg)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __addr_ok(addr) ((unsigned long __force)(addr) < (current_thread_info()->addr_limit.seg))
-
 #define __range_ok(addr,size) ({   unsigned long flag,roksum;   __chk_user_ptr(addr);   asm("addl %3,%1 ; sbbl %0,%0; cmpl %1,%4; sbbl $0,%0"   :"=&r" (flag), "=r" (roksum)   :"1" (addr),"g" ((int)(size)),"rm" (current_thread_info()->addr_limit.seg));   flag; })
-
 #define access_ok(type,addr,size) (likely(__range_ok(addr,size) == 0))
-
 struct exception_table_entry
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 {
  unsigned long insn, fixup;
 };
-
 #define __get_user_x(size,ret,x,ptr)   __asm__ __volatile__("call __get_user_" #size   :"=a" (ret),"=d" (x)   :"0" (ptr))
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define get_user(x,ptr)  ({ int __ret_gu;   unsigned long __val_gu;   __chk_user_ptr(ptr);   switch(sizeof (*(ptr))) {   case 1: __get_user_x(1,__ret_gu,__val_gu,ptr); break;   case 2: __get_user_x(2,__ret_gu,__val_gu,ptr); break;   case 4: __get_user_x(4,__ret_gu,__val_gu,ptr); break;   default: __get_user_x(X,__ret_gu,__val_gu,ptr); break;   }   (x) = (__typeof__(*(ptr)))__val_gu;   __ret_gu;  })
-
 #define __put_user_1(x, ptr) __asm__ __volatile__("call __put_user_1":"=a" (__ret_pu):"0" ((typeof(*(ptr)))(x)), "c" (ptr))
 #define __put_user_2(x, ptr) __asm__ __volatile__("call __put_user_2":"=a" (__ret_pu):"0" ((typeof(*(ptr)))(x)), "c" (ptr))
 #define __put_user_4(x, ptr) __asm__ __volatile__("call __put_user_4":"=a" (__ret_pu):"0" ((typeof(*(ptr)))(x)), "c" (ptr))
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __put_user_8(x, ptr) __asm__ __volatile__("call __put_user_8":"=a" (__ret_pu):"A" ((typeof(*(ptr)))(x)), "c" (ptr))
 #define __put_user_X(x, ptr) __asm__ __volatile__("call __put_user_X":"=a" (__ret_pu):"c" (ptr))
-
 #define put_user(x,ptr)  ({   int __ret_pu;   __typeof__(*(ptr)) __pus_tmp = x;   __ret_pu=0;   if(unlikely(__copy_to_user_ll(ptr, &__pus_tmp,   sizeof(*(ptr))) != 0))   __ret_pu=-EFAULT;   __ret_pu;   })
-
 #define __get_user(x,ptr)   __get_user_nocheck((x),(ptr),sizeof(*(ptr)))
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __put_user(x,ptr)   __put_user_nocheck((__typeof__(*(ptr)))(x),(ptr),sizeof(*(ptr)))
-
 #define __put_user_nocheck(x,ptr,size)  ({   long __pu_err;   __put_user_size((x),(ptr),(size),__pu_err,-EFAULT);   __pu_err;  })
-
 #define __put_user_u64(x, addr, err)   __asm__ __volatile__(   "1:	movl %%eax,0(%2)\n"   "2:	movl %%edx,4(%2)\n"   "3:\n"   ".section .fixup,\"ax\"\n"   "4:	movl %3,%0\n"   "	jmp 3b\n"   ".previous\n"   ".section __ex_table,\"a\"\n"   "	.align 4\n"   "	.long 1b,4b\n"   "	.long 2b,4b\n"   ".previous"   : "=r"(err)   : "A" (x), "r" (addr), "i"(-EFAULT), "0"(err))
-
 #define __put_user_size(x,ptr,size,retval,errret)  do {   __typeof__(*(ptr)) __pus_tmp = x;   retval = 0;     if(unlikely(__copy_to_user_ll(ptr, &__pus_tmp, size) != 0))   retval = errret;  } while (0)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct __large_struct { unsigned long buf[100]; };
 #define __m(x) (*(struct __large_struct __user *)(x))
-
 #define __put_user_asm(x, addr, err, itype, rtype, ltype, errret)   __asm__ __volatile__(   "1:	mov"itype" %"rtype"1,%2\n"   "2:\n"   ".section .fixup,\"ax\"\n"   "3:	movl %3,%0\n"   "	jmp 2b\n"   ".previous\n"   ".section __ex_table,\"a\"\n"   "	.align 4\n"   "	.long 1b,3b\n"   ".previous"   : "=r"(err)   : ltype (x), "m"(__m(addr)), "i"(errret), "0"(err))
-
 #define __get_user_nocheck(x,ptr,size)  ({   long __gu_err;   unsigned long __gu_val;   __get_user_size(__gu_val,(ptr),(size),__gu_err,-EFAULT);  (x) = (__typeof__(*(ptr)))__gu_val;   __gu_err;  })
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __get_user_size(x,ptr,size,retval,errret)  do {   retval = 0;   __chk_user_ptr(ptr);   switch (size) {   case 1: __get_user_asm(x,ptr,retval,"b","b","=q",errret);break;   case 2: __get_user_asm(x,ptr,retval,"w","w","=r",errret);break;   case 4: __get_user_asm(x,ptr,retval,"l","","=r",errret);break;   default: (x) = __get_user_bad();   }  } while (0)
-
 #define __get_user_asm(x, addr, err, itype, rtype, ltype, errret)   __asm__ __volatile__(   "1:	mov"itype" %2,%"rtype"1\n"   "2:\n"   ".section .fixup,\"ax\"\n"   "3:	movl %3,%0\n"   "	xor"itype" %"rtype"1,%"rtype"1\n"   "	jmp 2b\n"   ".previous\n"   ".section __ex_table,\"a\"\n"   "	.align 4\n"   "	.long 1b,3b\n"   ".previous"   : "=r"(err), ltype (x)   : "m"(__m(addr)), "i"(errret), "0"(err))
-
 #define ARCH_HAS_NOCACHE_UACCESS
-
 #define strlen_user(str) strnlen_user(str, LONG_MAX)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/unaligned.h b/libc/kernel/arch-x86/asm/unaligned.h
index ce7a8a7..8f2287c 100644
--- a/libc/kernel/arch-x86/asm/unaligned.h
+++ b/libc/kernel/arch-x86/asm/unaligned.h
@@ -7,13 +7,18 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_UNALIGNED_H
 #define _ASM_X86_UNALIGNED_H
-
 #define get_unaligned(ptr) (*(ptr))
-
 #define put_unaligned(val, ptr) ((void)( *(ptr) = (val) ))
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/unistd.h b/libc/kernel/arch-x86/asm/unistd.h
index 769f836..3c55d9a 100644
--- a/libc/kernel/arch-x86/asm/unistd.h
+++ b/libc/kernel/arch-x86/asm/unistd.h
@@ -7,10 +7,18 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifdef __i386__
 #include "unistd_32.h"
 #else
 #include "unistd_64.h"
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/unistd_32.h b/libc/kernel/arch-x86/asm/unistd_32.h
index b3d8b19..b8ade84 100644
--- a/libc/kernel/arch-x86/asm/unistd_32.h
+++ b/libc/kernel/arch-x86/asm/unistd_32.h
@@ -7,335 +7,418 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_I386_UNISTD_H_
 #define _ASM_I386_UNISTD_H_
-
 #define __NR_restart_syscall 0
 #define __NR_exit 1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_fork 2
 #define __NR_read 3
 #define __NR_write 4
 #define __NR_open 5
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_close 6
 #define __NR_waitpid 7
 #define __NR_creat 8
 #define __NR_link 9
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_unlink 10
 #define __NR_execve 11
 #define __NR_chdir 12
 #define __NR_time 13
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_mknod 14
 #define __NR_chmod 15
 #define __NR_lchown 16
 #define __NR_break 17
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_oldstat 18
 #define __NR_lseek 19
 #define __NR_getpid 20
 #define __NR_mount 21
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_umount 22
 #define __NR_setuid 23
 #define __NR_getuid 24
 #define __NR_stime 25
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_ptrace 26
 #define __NR_alarm 27
 #define __NR_oldfstat 28
 #define __NR_pause 29
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_utime 30
 #define __NR_stty 31
 #define __NR_gtty 32
 #define __NR_access 33
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_nice 34
 #define __NR_ftime 35
 #define __NR_sync 36
 #define __NR_kill 37
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_rename 38
 #define __NR_mkdir 39
 #define __NR_rmdir 40
 #define __NR_dup 41
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_pipe 42
 #define __NR_times 43
 #define __NR_prof 44
 #define __NR_brk 45
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_setgid 46
 #define __NR_getgid 47
 #define __NR_signal 48
 #define __NR_geteuid 49
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_getegid 50
 #define __NR_acct 51
 #define __NR_umount2 52
 #define __NR_lock 53
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_ioctl 54
 #define __NR_fcntl 55
 #define __NR_mpx 56
 #define __NR_setpgid 57
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_ulimit 58
 #define __NR_oldolduname 59
 #define __NR_umask 60
 #define __NR_chroot 61
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_ustat 62
 #define __NR_dup2 63
 #define __NR_getppid 64
 #define __NR_getpgrp 65
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_setsid 66
 #define __NR_sigaction 67
 #define __NR_sgetmask 68
 #define __NR_ssetmask 69
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_setreuid 70
 #define __NR_setregid 71
 #define __NR_sigsuspend 72
 #define __NR_sigpending 73
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_sethostname 74
 #define __NR_setrlimit 75
 #define __NR_getrlimit 76  
 #define __NR_getrusage 77
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_gettimeofday 78
 #define __NR_settimeofday 79
 #define __NR_getgroups 80
 #define __NR_setgroups 81
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_select 82
 #define __NR_symlink 83
 #define __NR_oldlstat 84
 #define __NR_readlink 85
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_uselib 86
 #define __NR_swapon 87
 #define __NR_reboot 88
 #define __NR_readdir 89
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_mmap 90
 #define __NR_munmap 91
 #define __NR_truncate 92
 #define __NR_ftruncate 93
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_fchmod 94
 #define __NR_fchown 95
 #define __NR_getpriority 96
 #define __NR_setpriority 97
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_profil 98
 #define __NR_statfs 99
 #define __NR_fstatfs 100
 #define __NR_ioperm 101
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_socketcall 102
 #define __NR_syslog 103
 #define __NR_setitimer 104
 #define __NR_getitimer 105
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_stat 106
 #define __NR_lstat 107
 #define __NR_fstat 108
 #define __NR_olduname 109
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_iopl 110
 #define __NR_vhangup 111
 #define __NR_idle 112
 #define __NR_vm86old 113
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_wait4 114
 #define __NR_swapoff 115
 #define __NR_sysinfo 116
 #define __NR_ipc 117
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_fsync 118
 #define __NR_sigreturn 119
 #define __NR_clone 120
 #define __NR_setdomainname 121
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_uname 122
 #define __NR_modify_ldt 123
 #define __NR_adjtimex 124
 #define __NR_mprotect 125
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_sigprocmask 126
 #define __NR_create_module 127
 #define __NR_init_module 128
 #define __NR_delete_module 129
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_get_kernel_syms 130
 #define __NR_quotactl 131
 #define __NR_getpgid 132
 #define __NR_fchdir 133
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_bdflush 134
 #define __NR_sysfs 135
 #define __NR_personality 136
 #define __NR_afs_syscall 137  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_setfsuid 138
 #define __NR_setfsgid 139
 #define __NR__llseek 140
 #define __NR_getdents 141
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR__newselect 142
 #define __NR_flock 143
 #define __NR_msync 144
 #define __NR_readv 145
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_writev 146
 #define __NR_getsid 147
 #define __NR_fdatasync 148
 #define __NR__sysctl 149
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_mlock 150
 #define __NR_munlock 151
 #define __NR_mlockall 152
 #define __NR_munlockall 153
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_sched_setparam 154
 #define __NR_sched_getparam 155
 #define __NR_sched_setscheduler 156
 #define __NR_sched_getscheduler 157
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_sched_yield 158
 #define __NR_sched_get_priority_max 159
 #define __NR_sched_get_priority_min 160
 #define __NR_sched_rr_get_interval 161
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_nanosleep 162
 #define __NR_mremap 163
 #define __NR_setresuid 164
 #define __NR_getresuid 165
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_vm86 166
 #define __NR_query_module 167
 #define __NR_poll 168
 #define __NR_nfsservctl 169
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_setresgid 170
 #define __NR_getresgid 171
 #define __NR_prctl 172
 #define __NR_rt_sigreturn 173
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_rt_sigaction 174
 #define __NR_rt_sigprocmask 175
 #define __NR_rt_sigpending 176
 #define __NR_rt_sigtimedwait 177
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_rt_sigqueueinfo 178
 #define __NR_rt_sigsuspend 179
 #define __NR_pread64 180
 #define __NR_pwrite64 181
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_chown 182
 #define __NR_getcwd 183
 #define __NR_capget 184
 #define __NR_capset 185
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_sigaltstack 186
 #define __NR_sendfile 187
 #define __NR_getpmsg 188  
 #define __NR_putpmsg 189  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_vfork 190
 #define __NR_ugetrlimit 191  
 #define __NR_mmap2 192
 #define __NR_truncate64 193
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_ftruncate64 194
 #define __NR_stat64 195
 #define __NR_lstat64 196
 #define __NR_fstat64 197
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_lchown32 198
 #define __NR_getuid32 199
 #define __NR_getgid32 200
 #define __NR_geteuid32 201
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_getegid32 202
 #define __NR_setreuid32 203
 #define __NR_setregid32 204
 #define __NR_getgroups32 205
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_setgroups32 206
 #define __NR_fchown32 207
 #define __NR_setresuid32 208
 #define __NR_getresuid32 209
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_setresgid32 210
 #define __NR_getresgid32 211
 #define __NR_chown32 212
 #define __NR_setuid32 213
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_setgid32 214
 #define __NR_setfsuid32 215
 #define __NR_setfsgid32 216
 #define __NR_pivot_root 217
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_mincore 218
 #define __NR_madvise 219
 #define __NR_madvise1 219  
 #define __NR_getdents64 220
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_fcntl64 221
-
 #define __NR_gettid 224
 #define __NR_readahead 225
 #define __NR_setxattr 226
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_lsetxattr 227
 #define __NR_fsetxattr 228
 #define __NR_getxattr 229
 #define __NR_lgetxattr 230
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_fgetxattr 231
 #define __NR_listxattr 232
 #define __NR_llistxattr 233
 #define __NR_flistxattr 234
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_removexattr 235
 #define __NR_lremovexattr 236
 #define __NR_fremovexattr 237
 #define __NR_tkill 238
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_sendfile64 239
 #define __NR_futex 240
 #define __NR_sched_setaffinity 241
 #define __NR_sched_getaffinity 242
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_set_thread_area 243
 #define __NR_get_thread_area 244
 #define __NR_io_setup 245
 #define __NR_io_destroy 246
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_io_getevents 247
 #define __NR_io_submit 248
 #define __NR_io_cancel 249
 #define __NR_fadvise64 250
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_exit_group 252
 #define __NR_lookup_dcookie 253
 #define __NR_epoll_create 254
 #define __NR_epoll_ctl 255
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_epoll_wait 256
 #define __NR_remap_file_pages 257
 #define __NR_set_tid_address 258
 #define __NR_timer_create 259
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_timer_settime (__NR_timer_create+1)
 #define __NR_timer_gettime (__NR_timer_create+2)
 #define __NR_timer_getoverrun (__NR_timer_create+3)
 #define __NR_timer_delete (__NR_timer_create+4)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_clock_settime (__NR_timer_create+5)
 #define __NR_clock_gettime (__NR_timer_create+6)
 #define __NR_clock_getres (__NR_timer_create+7)
 #define __NR_clock_nanosleep (__NR_timer_create+8)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_statfs64 268
 #define __NR_fstatfs64 269
 #define __NR_tgkill 270
 #define __NR_utimes 271
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_fadvise64_64 272
 #define __NR_vserver 273
 #define __NR_mbind 274
 #define __NR_get_mempolicy 275
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_set_mempolicy 276
 #define __NR_mq_open 277
 #define __NR_mq_unlink (__NR_mq_open+1)
 #define __NR_mq_timedsend (__NR_mq_open+2)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_mq_timedreceive (__NR_mq_open+3)
 #define __NR_mq_notify (__NR_mq_open+4)
 #define __NR_mq_getsetattr (__NR_mq_open+5)
 #define __NR_kexec_load 283
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_waitid 284
-
 #define __NR_add_key 286
 #define __NR_request_key 287
 #define __NR_keyctl 288
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_ioprio_set 289
 #define __NR_ioprio_get 290
 #define __NR_inotify_init 291
 #define __NR_inotify_add_watch 292
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_inotify_rm_watch 293
 #define __NR_migrate_pages 294
 #define __NR_openat 295
 #define __NR_mkdirat 296
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_mknodat 297
 #define __NR_fchownat 298
 #define __NR_futimesat 299
 #define __NR_fstatat64 300
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_unlinkat 301
 #define __NR_renameat 302
 #define __NR_linkat 303
 #define __NR_symlinkat 304
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_readlinkat 305
 #define __NR_fchmodat 306
 #define __NR_faccessat 307
 #define __NR_pselect6 308
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_ppoll 309
 #define __NR_unshare 310
 #define __NR_set_robust_list 311
 #define __NR_get_robust_list 312
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_splice 313
 #define __NR_sync_file_range 314
 #define __NR_tee 315
 #define __NR_vmsplice 316
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_move_pages 317
 #define __NR_getcpu 318
 #define __NR_epoll_pwait 319
 #define __NR_utimensat 320
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __NR_signalfd 321
 #define __NR_timerfd 322
 #define __NR_eventfd 323
 #define __NR_fallocate 324
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/user.h b/libc/kernel/arch-x86/asm/user.h
index 980b0aa..0d655d1 100644
--- a/libc/kernel/arch-x86/asm/user.h
+++ b/libc/kernel/arch-x86/asm/user.h
@@ -7,10 +7,18 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifdef __i386__
 #include "user_32.h"
 #else
 #include "user_64.h"
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/user32.h b/libc/kernel/arch-x86/asm/user32.h
index 89eabb1..1549efd 100644
--- a/libc/kernel/arch-x86/asm/user32.h
+++ b/libc/kernel/arch-x86/asm/user32.h
@@ -7,67 +7,79 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef USER32_H
 #define USER32_H 1
-
 struct user_i387_ia32_struct {
  u32 cwd;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  u32 swd;
  u32 twd;
  u32 fip;
  u32 fcs;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  u32 foo;
  u32 fos;
  u32 st_space[20];
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct user32_fxsr_struct {
  unsigned short cwd;
  unsigned short swd;
  unsigned short twd;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned short fop;
  int fip;
  int fcs;
  int foo;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  int fos;
  int mxcsr;
  int reserved;
  int st_space[32];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  int xmm_space[32];
  int padding[56];
 };
-
 struct user_regs_struct32 {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u32 ebx, ecx, edx, esi, edi, ebp, eax;
  unsigned short ds, __ds, es, __es;
  unsigned short fs, __fs, gs, __gs;
  __u32 orig_eax, eip;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned short cs, __cs;
  __u32 eflags, esp;
  unsigned short ss, __ss;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct user32 {
  struct user_regs_struct32 regs;
  int u_fpvalid;
-
  struct user_i387_ia32_struct i387;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u32 u_tsize;
  __u32 u_dsize;
  __u32 u_ssize;
  __u32 start_code;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u32 start_stack;
  __u32 signal;
  int reserved;
  __u32 u_ar0;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u32 u_fpstate;
  __u32 magic;
  char u_comm[32];
  int u_debugreg[8];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/user_32.h b/libc/kernel/arch-x86/asm/user_32.h
index 8e0296c..6825b35 100644
--- a/libc/kernel/arch-x86/asm/user_32.h
+++ b/libc/kernel/arch-x86/asm/user_32.h
@@ -7,75 +7,85 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _I386_USER_H
 #define _I386_USER_H
-
 #include <asm/page.h>
-
 struct user_i387_struct {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long cwd;
  long swd;
  long twd;
  long fip;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long fcs;
  long foo;
  long fos;
  long st_space[20];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 struct user_fxsr_struct {
  unsigned short cwd;
  unsigned short swd;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned short twd;
  unsigned short fop;
  long fip;
  long fcs;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long foo;
  long fos;
  long mxcsr;
  long reserved;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long st_space[32];
  long xmm_space[32];
  long padding[56];
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct user_regs_struct {
  long ebx, ecx, edx, esi, edi, ebp, eax;
  unsigned short ds, __ds, es, __es;
  unsigned short fs, __fs, gs, __gs;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long orig_eax, eip;
  unsigned short cs, __cs;
  long eflags, esp;
  unsigned short ss, __ss;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 struct user{
-
  struct user_regs_struct regs;
-
  int u_fpvalid;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct user_i387_struct i387;
-
  unsigned long int u_tsize;
  unsigned long int u_dsize;
  unsigned long int u_ssize;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long start_code;
  unsigned long start_stack;
  long int signal;
  int reserved;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct user_pt_regs * u_ar0;
-
  struct user_i387_struct* u_fpstate;
  unsigned long magic;
  char u_comm[32];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  int u_debugreg[8];
 };
 #define NBPG PAGE_SIZE
 #define UPAGES 1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define HOST_TEXT_START_ADDR (u.start_code)
 #define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/vm86.h b/libc/kernel/arch-x86/asm/vm86.h
index d0e71f1..222a11e 100644
--- a/libc/kernel/arch-x86/asm/vm86.h
+++ b/libc/kernel/arch-x86/asm/vm86.h
@@ -7,107 +7,119 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _LINUX_VM86_H
 #define _LINUX_VM86_H
-
 #define TF_MASK 0x00000100
 #define IF_MASK 0x00000200
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IOPL_MASK 0x00003000
 #define NT_MASK 0x00004000
 #define VM_MASK 0  
 #define AC_MASK 0x00040000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VIF_MASK 0x00080000  
 #define VIP_MASK 0x00100000  
 #define ID_MASK 0x00200000
-
 #define BIOSSEG 0x0f000
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CPU_086 0
 #define CPU_186 1
 #define CPU_286 2
 #define CPU_386 3
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CPU_486 4
 #define CPU_586 5
-
 #define VM86_TYPE(retval) ((retval) & 0xff)
 #define VM86_ARG(retval) ((retval) >> 8)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VM86_SIGNAL 0  
 #define VM86_UNKNOWN 1  
 #define VM86_INTx 2  
 #define VM86_STI 3  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VM86_PICRETURN 4  
 #define VM86_TRAP 6  
-
 #define VM86_PLUS_INSTALL_CHECK 0
 #define VM86_ENTER 1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VM86_ENTER_NO_BYPASS 2
 #define VM86_REQUEST_IRQ 3
 #define VM86_FREE_IRQ 4
 #define VM86_GET_IRQ_BITS 5
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VM86_GET_AND_RESET_IRQ 6
-
 struct vm86_regs {
-
  long ebx;
  long ecx;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long edx;
  long esi;
  long edi;
  long ebp;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long eax;
  long __null_ds;
  long __null_es;
  long __null_fs;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long __null_gs;
  long orig_eax;
  long eip;
  unsigned short cs, __csh;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long eflags;
  long esp;
  unsigned short ss, __ssh;
-
  unsigned short es, __esh;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned short ds, __dsh;
  unsigned short fs, __fsh;
  unsigned short gs, __gsh;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct revectored_struct {
  unsigned long __map[8];
 };
-
 struct vm86_struct {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct vm86_regs regs;
  unsigned long flags;
  unsigned long screen_bitmap;
  unsigned long cpu_type;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct revectored_struct int_revectored;
  struct revectored_struct int21_revectored;
 };
-
 #define VM86_SCREEN_BITMAP 0x0001
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct vm86plus_info_struct {
  unsigned long force_return_for_pic:1;
  unsigned long vm86dbg_active:1;
  unsigned long vm86dbg_TFpendig:1;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long unused:28;
  unsigned long is_vm86pus:1;
  unsigned char vm86dbg_intxxtab[32];
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct vm86plus_struct {
  struct vm86_regs regs;
  unsigned long flags;
  unsigned long screen_bitmap;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long cpu_type;
  struct revectored_struct int_revectored;
  struct revectored_struct int21_revectored;
  struct vm86plus_info_struct vm86plus;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 #endif
diff --git a/libc/kernel/arch-x86/asm/voyager.h b/libc/kernel/arch-x86/asm/voyager.h
index c6f50a9..364b211 100644
--- a/libc/kernel/arch-x86/asm/voyager.h
+++ b/libc/kernel/arch-x86/asm/voyager.h
@@ -7,431 +7,454 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #undef VOYAGER_DEBUG
 #undef VOYAGER_CAT_DEBUG
-
 #ifdef VOYAGER_DEBUG
 #define VDEBUG(x) printk x
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #else
 #define VDEBUG(x)
 #endif
-
 #define VOYAGER_LEVEL5_AND_ABOVE 0x3435
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_LEVEL4 0x3360
-
 #define VOYAGER_DINO 0x43
-
 #define VOYAGER_MC_SETUP 0x96
-
 #define VOYAGER_CAT_CONFIG_PORT 0x97
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_CAT_DESELECT 0xff
 #define VOYAGER_SSPB_RELOCATION_PORT 0x98
-
 #define VOYAGER_CAT_IRCYC 0x01
-
 #define VOYAGER_CAT_DRCYC 0x02
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_CAT_RUN 0x0F
-
 #define VOYAGER_CAT_END 0x80
-
 #define VOYAGER_CAT_HOLD 0x90
-
 #define VOYAGER_CAT_STEP 0xE0
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_CAT_CLEMSON 0xFF
-
 #define VOYAGER_CAT_HEADER 0x7F
-
 #define VOYAGER_MIN_MODULE 0x10
 #define VOYAGER_MAX_MODULE 0x1f
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_ASIC_ID_REG 0x00
 #define VOYAGER_ASIC_TYPE_REG 0x01
-
 #define VOYAGER_AUTO_INC_REG 0x02
 #define VOYAGER_AUTO_INC 0x04
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_NO_AUTO_INC 0xfb
 #define VOYAGER_SUBADDRDATA 0x03
 #define VOYAGER_SCANPATH 0x05
 #define VOYAGER_CONNECT_ASIC 0x01
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_DISCONNECT_ASIC 0xfe
 #define VOYAGER_SUBADDRLO 0x06
 #define VOYAGER_SUBADDRHI 0x07
 #define VOYAGER_SUBMODSELECT 0x08
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_SUBMODPRESENT 0x09
-
 #define VOYAGER_SUBADDR_LO 0xff
 #define VOYAGER_SUBADDR_HI 0xffff
-
 #define VOYAGER_MAX_SCAN_PATH 0x100
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_MAX_REG_SIZE 4
-
 #define VOYAGER_MAX_MODULES 16
-
 #define VOYAGER_MAX_ASICS_PER_MODULE 7
-
 #define VOYAGER_CAT_ID 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_PSI 0x1a
-
 #define VOYAGER_READ_CONFIG 0x1
 #define VOYAGER_WRITE_CONFIG 0x2
 #define VOYAGER_BYPASS 0xff
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef struct voyager_asic
 {
  __u8 asic_addr;
  __u8 asic_type;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 asic_id;
  __u8 jtag_id[4];
  __u8 asic_location;
  __u8 bit_location;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 ireg_length;
  __u16 subaddr;
  struct voyager_asic *next;
 } voyager_asic_t;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef struct voyager_module {
  __u8 module_addr;
  __u8 scan_path_connected;
  __u16 ee_size;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u16 num_asics;
  __u16 inst_bits;
  __u16 largest_reg;
  __u16 smallest_reg;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  voyager_asic_t *asic;
  struct voyager_module *submodule;
  struct voyager_module *next;
 } voyager_module_t;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef struct voyager_eeprom_hdr {
  __u8 module_id[4];
  __u8 version_id;
  __u8 config_id;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u16 boundry_id;
  __u16 ee_size;
  __u8 assembly[11];
  __u8 assembly_rev;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 tracer[4];
  __u16 assembly_cksum;
  __u16 power_consump;
  __u16 num_asics;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u16 bist_time;
  __u16 err_log_offset;
  __u16 scan_path_offset;
  __u16 cct_offset;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u16 log_length;
  __u16 xsum_end;
  __u8 reserved[4];
  __u8 sflag;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 part_number[13];
  __u8 version[10];
  __u8 signature[8];
  __u16 eeprom_chksum;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u32 data_stamp_offset;
  __u8 eflag ;
 } __attribute__((packed)) voyager_eprom_hdr_t;
-
 #define VOYAGER_EPROM_SIZE_OFFSET ((__u16)(&(((voyager_eprom_hdr_t *)0)->ee_size)))
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_XSUM_END_OFFSET 0x2a
-
 typedef struct voyager_sp_table {
  __u8 asic_id;
  __u8 bypass_flag;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u16 asic_data_offset;
  __u16 config_data_offset;
 } __attribute__((packed)) voyager_sp_table_t;
-
 typedef struct voyager_jtag_table {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 icode[4];
  __u8 runbist[4];
  __u8 intest[4];
  __u8 samp_preld[4];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 ireg_len;
 } __attribute__((packed)) voyager_jtt_t;
-
 typedef struct voyager_asic_data_table {
  __u8 jtag_id[4];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u16 length_bsr;
  __u16 length_bist_reg;
  __u32 bist_clk;
  __u16 subaddr_bits;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u16 seed_bits;
  __u16 sig_bits;
  __u16 jtag_offset;
 } __attribute__((packed)) voyager_at_t;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_WCBIC0 0x41  
 #define VOYAGER_WCBIC1 0x49  
 #define VOYAGER_WCBIC2 0x51  
 #define VOYAGER_WCBIC3 0x59  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_WCBIC4 0x61  
 #define VOYAGER_WCBIC5 0x69  
 #define VOYAGER_WCBIC6 0x71  
 #define VOYAGER_WCBIC7 0x79  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_WCBIC_TOM_L 0x4
 #define VOYAGER_WCBIC_TOM_H 0x5
-
 #define VOYAGER_VMC1 0x81
 #define VOYAGER_VMC2 0x91
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_VMC3 0xa1
 #define VOYAGER_VMC4 0xb1
-
 #define VOYAGER_VMC_MEMORY_SETUP 0x9
 #define VMC_Interleaving 0x01
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VMC_4Way 0x02
 #define VMC_EvenCacheLines 0x04
 #define VMC_HighLine 0x08
 #define VMC_Start0_Enable 0x20
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VMC_Start1_Enable 0x40
 #define VMC_Vremap 0x80
 #define VOYAGER_VMC_BANK_DENSITY 0xa
 #define VMC_BANK_EMPTY 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VMC_BANK_4MB 1
 #define VMC_BANK_16MB 2
 #define VMC_BANK_64MB 3
 #define VMC_BANK0_MASK 0x03
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VMC_BANK1_MASK 0x0C
 #define VMC_BANK2_MASK 0x30
 #define VMC_BANK3_MASK 0xC0
-
 #define VOYAGER_MMC_ASIC_ID 1
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_MMC_MEMORY0_MODULE 0x14
 #define VOYAGER_MMC_MEMORY1_MODULE 0x15
-
 #define VOYAGER_MMA_ASIC_ID 2
-
 #define VOYAGER_QUAD_BASEBOARD 1
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_QUAD_QDATA0 1
 #define VOYAGER_QUAD_QDATA1 2
 #define VOYAGER_QUAD_QABC 3
-
 #define VOYAGER_PROCESSOR_PRESENT_MASK 0x88a
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_MEMORY_CLICKMAP 0xa23
 #define VOYAGER_DUMP_LOCATION 0xb1a
-
 #define VOYAGER_SUS_IN_CONTROL_PORT 0x3ff
 #define VOYAGER_IN_CONTROL_FLAG 0x80
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_PSI_STATUS_REG 0x08
 #define PSI_DC_FAIL 0x01
 #define PSI_MON 0x02
 #define PSI_FAULT 0x04
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PSI_ALARM 0x08
 #define PSI_CURRENT 0x10
 #define PSI_DVM 0x20
 #define PSI_PSCFAULT 0x40
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PSI_STAT_CHG 0x80
-
 #define VOYAGER_PSI_SUPPLY_REG 0x8000
-
 #define PSI_FAIL_DC 0x01
 #define PSI_FAIL_AC 0x02
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PSI_MON_INT 0x04
 #define PSI_SWITCH_OFF 0x08
 #define PSI_HX_OFF 0x10
 #define PSI_SECURITY 0x20
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PSI_CMOS_BATT_LOW 0x40
 #define PSI_CMOS_BATT_FAIL 0x80
-
 #define PSI_CLR_SWITCH_OFF 0x13
 #define PSI_CLR_HX_OFF 0x14
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PSI_CLR_CMOS_BATT_FAIL 0x17
-
 #define VOYAGER_PSI_MASK 0x8001
 #define PSI_MASK_MASK 0x10
-
 #define VOYAGER_PSI_AC_FAIL_REG 0x8004
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define AC_FAIL_STAT_CHANGE 0x80
-
 #define VOYAGER_PSI_GENERAL_REG 0x8007
-
 #define PSI_SWITCH_ON 0x01
 #define PSI_SWITCH_ENABLED 0x02
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PSI_ALARM_ENABLED 0x08
 #define PSI_SECURE_ENABLED 0x10
 #define PSI_COLD_RESET 0x20
 #define PSI_COLD_START 0x80
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PSI_POWER_DOWN 0x10
 #define PSI_SWITCH_DISABLE 0x01
 #define PSI_SWITCH_ENABLE 0x11
 #define PSI_CLEAR 0x12
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PSI_ALARM_DISABLE 0x03
 #define PSI_ALARM_ENABLE 0x13
 #define PSI_CLEAR_COLD_RESET 0x05
 #define PSI_SET_COLD_RESET 0x15
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PSI_CLEAR_COLD_START 0x07
 #define PSI_SET_COLD_START 0x17
-
 struct voyager_bios_info {
  __u8 len;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 major;
  __u8 minor;
  __u8 debug;
  __u8 num_classes;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 class_1;
  __u8 class_2;
 };
-
 #define NUMBER_OF_MC_BUSSES 2
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SLOTS_PER_MC_BUS 8
 #define MAX_CPUS 16  
 #define MAX_PROCESSOR_BOARDS 4  
 #define MAX_CACHE_LEVELS 4  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MAX_SHARED_CPUS 4  
 #define NUMBER_OF_POS_REGS 8
-
 typedef struct {
  __u8 MC_Slot;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 POS_Values[NUMBER_OF_POS_REGS];
 } __attribute__((packed)) MC_SlotInformation_t;
-
 struct QuadDescription {
  __u8 Type;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 StructureVersion;
  __u32 CPI_BaseAddress;
  __u32 LARC_BankSize;
  __u32 LocalMemoryStateBits;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 Slot;
 } __attribute__((packed));
-
 struct ProcBoardInfo {
  __u8 Type;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 StructureVersion;
  __u8 NumberOfBoards;
  struct QuadDescription QuadData[MAX_PROCESSOR_BOARDS];
 } __attribute__((packed));
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct CacheDescription {
  __u8 Level;
  __u32 TotalSize;
  __u16 LineSize;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 Associativity;
  __u8 CacheType;
  __u8 WriteType;
  __u8 Number_CPUs_SharedBy;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 Shared_CPUs_Hardware_IDs[MAX_SHARED_CPUS];
-
 } __attribute__((packed));
-
 struct CPU_Description {
  __u8 CPU_HardwareId;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  char *FRU_String;
  __u8 NumberOfCacheLevels;
  struct CacheDescription CacheLevelData[MAX_CACHE_LEVELS];
 } __attribute__((packed));
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct CPU_Info {
  __u8 Type;
  __u8 StructureVersion;
  __u8 NumberOf_CPUs;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct CPU_Description CPU_Data[MAX_CPUS];
 } __attribute__((packed));
-
 typedef struct {
  __u8 Mailbox_SUS;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 Mailbox_OS;
  __u8 SUS_MailboxVersion;
  __u8 OS_MailboxVersion;
  __u32 OS_Flags;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u32 SUS_Flags;
  __u32 WatchDogPeriod;
  __u32 WatchDogCount;
  __u32 MemoryFor_SUS_ErrorLog;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  MC_SlotInformation_t MC_SlotInfo[NUMBER_OF_MC_BUSSES*SLOTS_PER_MC_BUS];
-
  struct ProcBoardInfo *BoardData;
  struct CPU_Info *CPU_Data;
-
 } Voyager_KernelSUS_Mbox_t;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct voyager_qic_cpi {
-
  struct {
  __u32 pad1[3];
  __u32 cpi;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u32 pad2[4];
  } qic_cpi[8];
 };
-
 struct voyager_status {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u32 power_fail:1;
  __u32 switch_off:1;
  __u32 request_from_kernel:1;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct voyager_psi_regs {
  __u8 cat_id;
  __u8 cat_dev;
  __u8 cat_control;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 subaddr;
  __u8 dummy4;
  __u8 checkbit;
  __u8 subaddr_low;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 subaddr_high;
  __u8 intstatus;
  __u8 stat1;
  __u8 stat3;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 fault;
  __u8 tms;
  __u8 gen;
  __u8 sysconf;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 dummy15;
 };
-
 struct voyager_psi_subregs {
  __u8 supply;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 mask;
  __u8 present;
  __u8 DCfail;
  __u8 ACfail;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 fail;
  __u8 UPSfail;
  __u8 genstatus;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct voyager_psi {
  struct voyager_psi_regs regs;
  struct voyager_psi_subregs subregs;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct voyager_SUS {
 #define VOYAGER_DUMP_BUTTON_NMI 0x1
 #define VOYAGER_SUS_VALID 0x2
 #define VOYAGER_SYSINT_COMPLETE 0x3
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 SUS_mbox;
 #define VOYAGER_NO_COMMAND 0x0
 #define VOYAGER_IGNORE_DUMP 0x1
 #define VOYAGER_DO_DUMP 0x2
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_SYSINT_HANDSHAKE 0x3
 #define VOYAGER_DO_MEM_DUMP 0x4
 #define VOYAGER_SYSINT_WAS_RECOVERED 0x5
  __u8 kernel_mbox;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_MAILBOX_VERSION 0x10
  __u8 SUS_version;
  __u8 kernel_version;
 #define VOYAGER_OS_HAS_SYSINT 0x1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_OS_IN_PROGRESS 0x2
 #define VOYAGER_UPDATING_WDPERIOD 0x4
  __u32 kernel_flags;
 #define VOYAGER_SUS_BOOTING 0x1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_SUS_IN_PROGRESS 0x2
  __u32 SUS_flags;
  __u32 watchdog_period;
  __u32 watchdog_count;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u32 SUS_errorlog;
-
 };
-
 #define VOYAGER_PSI_READ 0
 #define VOYAGER_PSI_WRITE 1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VOYAGER_PSI_SUBREAD 2
 #define VOYAGER_PSI_SUBWRITE 3
-
diff --git a/libc/kernel/arch-x86/asm/vsyscall.h b/libc/kernel/arch-x86/asm/vsyscall.h
index a7bee3b..41a52cf 100644
--- a/libc/kernel/arch-x86/asm/vsyscall.h
+++ b/libc/kernel/arch-x86/asm/vsyscall.h
@@ -7,21 +7,28 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_64_VSYSCALL_H_
 #define _ASM_X86_64_VSYSCALL_H_
-
 enum vsyscall_num {
  __NR_vgettimeofday,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __NR_vtime,
  __NR_vgetcpu,
 };
-
 #define VSYSCALL_START (-10UL << 20)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VSYSCALL_SIZE 1024
 #define VSYSCALL_END (-2UL << 20)
 #define VSYSCALL_MAPPED_PAGES 1
 #define VSYSCALL_ADDR(vsyscall_nr) (VSYSCALL_START+VSYSCALL_SIZE*(vsyscall_nr))
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
diff --git a/libc/kernel/arch-x86/asm/xen/hypercall.h b/libc/kernel/arch-x86/asm/xen/hypercall.h
index 3c523a8..bb2342c 100644
--- a/libc/kernel/arch-x86/asm/xen/hypercall.h
+++ b/libc/kernel/arch-x86/asm/xen/hypercall.h
@@ -7,28 +7,29 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __HYPERCALL_H__
 #define __HYPERCALL_H__
-
 #include <linux/errno.h>
 #include <linux/string.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <xen/interface/xen.h>
 #include <xen/interface/sched.h>
 #include <xen/interface/physdev.h>
-
 #define _hypercall0(type, name)  ({   long __res;   asm volatile (   "call %[call]"   : "=a" (__res)   : [call] "m" (hypercall_page[__HYPERVISOR_##name])   : "memory" );   (type)__res;  })
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define _hypercall1(type, name, a1)  ({   long __res, __ign1;   asm volatile (   "call %[call]"   : "=a" (__res), "=b" (__ign1)   : "1" ((long)(a1)),   [call] "m" (hypercall_page[__HYPERVISOR_##name])   : "memory" );   (type)__res;  })
-
 #define _hypercall2(type, name, a1, a2)  ({   long __res, __ign1, __ign2;   asm volatile (   "call %[call]"   : "=a" (__res), "=b" (__ign1), "=c" (__ign2)   : "1" ((long)(a1)), "2" ((long)(a2)),   [call] "m" (hypercall_page[__HYPERVISOR_##name])   : "memory" );   (type)__res;  })
-
 #define _hypercall3(type, name, a1, a2, a3)  ({   long __res, __ign1, __ign2, __ign3;   asm volatile (   "call %[call]"   : "=a" (__res), "=b" (__ign1), "=c" (__ign2),   "=d" (__ign3)   : "1" ((long)(a1)), "2" ((long)(a2)),   "3" ((long)(a3)),   [call] "m" (hypercall_page[__HYPERVISOR_##name])   : "memory" );   (type)__res;  })
-
 #define _hypercall4(type, name, a1, a2, a3, a4)  ({   long __res, __ign1, __ign2, __ign3, __ign4;   asm volatile (   "call %[call]"   : "=a" (__res), "=b" (__ign1), "=c" (__ign2),   "=d" (__ign3), "=S" (__ign4)   : "1" ((long)(a1)), "2" ((long)(a2)),   "3" ((long)(a3)), "4" ((long)(a4)),   [call] "m" (hypercall_page[__HYPERVISOR_##name])   : "memory" );   (type)__res;  })
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define _hypercall5(type, name, a1, a2, a3, a4, a5)  ({   long __res, __ign1, __ign2, __ign3, __ign4, __ign5;   asm volatile (   "call %[call]"   : "=a" (__res), "=b" (__ign1), "=c" (__ign2),   "=d" (__ign3), "=S" (__ign4), "=D" (__ign5)   : "1" ((long)(a1)), "2" ((long)(a2)),   "3" ((long)(a3)), "4" ((long)(a4)),   "5" ((long)(a5)),   [call] "m" (hypercall_page[__HYPERVISOR_##name])   : "memory" );   (type)__res;  })
-
 #endif