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