diff --git a/libc/kernel/arch-arm/asm/uaccess.h b/libc/kernel/arch-arm/asm/uaccess.h
index 21fc3f2..6ab21d8 100644
--- a/libc/kernel/arch-arm/asm/uaccess.h
+++ b/libc/kernel/arch-arm/asm/uaccess.h
@@ -7,71 +7,84 @@
  ***   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 _ASMARM_UACCESS_H
 #define _ASMARM_UACCESS_H
-
 #include <linux/sched.h>
 #include <asm/errno.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/memory.h>
 #include <asm/domain.h>
 #include <asm/system.h>
-
 #define VERIFY_READ 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VERIFY_WRITE 1
-
 struct exception_table_entry
 {
  unsigned long insn, fixup;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 #define KERNEL_DS 0x00000000
 #define get_ds() (KERNEL_DS)
-
 #define USER_DS KERNEL_DS
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define segment_eq(a,b) (1)
 #define __addr_ok(addr) (1)
 #define __range_ok(addr,size) (0)
 #define get_fs() (KERNEL_DS)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define get_user(x,p) __get_user(x,p)
 #define put_user(x,p) __put_user(x,p)
 #define access_ok(type,addr,size) (__range_ok(addr,size) == 0)
 #define __get_user(x,ptr)  ({   long __gu_err = 0;   __get_user_err((x),(ptr),__gu_err);   __gu_err;  })
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __get_user_error(x,ptr,err)  ({   __get_user_err((x),(ptr),err);   (void) 0;  })
 #define __get_user_err(x,ptr,err)  do {   unsigned long __gu_addr = (unsigned long)(ptr);   unsigned long __gu_val;   __chk_user_ptr(ptr);   switch (sizeof(*(ptr))) {   case 1: __get_user_asm_byte(__gu_val,__gu_addr,err); break;   case 2: __get_user_asm_half(__gu_val,__gu_addr,err); break;   case 4: __get_user_asm_word(__gu_val,__gu_addr,err); break;   default: (__gu_val) = __get_user_bad();   }   (x) = (__typeof__(*(ptr)))__gu_val;  } while (0)
 #define __get_user_asm_byte(x,addr,err)   __asm__ __volatile__(   "1:	ldrbt	%1,[%2],#0\n"   "2:\n"   "	.section .fixup,\"ax\"\n"   "	.align	2\n"   "3:	mov	%0, %3\n"   "	mov	%1, #0\n"   "	b	2b\n"   "	.previous\n"   "	.section __ex_table,\"a\"\n"   "	.align	3\n"   "	.long	1b, 3b\n"   "	.previous"   : "+r" (err), "=&r" (x)   : "r" (addr), "i" (-EFAULT)   : "cc")
 #ifndef __ARMEB__
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __get_user_asm_half(x,__gu_addr,err)  ({   unsigned long __b1, __b2;   __get_user_asm_byte(__b1, __gu_addr, err);   __get_user_asm_byte(__b2, __gu_addr + 1, err);   (x) = __b1 | (__b2 << 8);  })
 #else
 #define __get_user_asm_half(x,__gu_addr,err)  ({   unsigned long __b1, __b2;   __get_user_asm_byte(__b1, __gu_addr, err);   __get_user_asm_byte(__b2, __gu_addr + 1, err);   (x) = (__b1 << 8) | __b2;  })
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __get_user_asm_word(x,addr,err)   __asm__ __volatile__(   "1:	ldrt	%1,[%2],#0\n"   "2:\n"   "	.section .fixup,\"ax\"\n"   "	.align	2\n"   "3:	mov	%0, %3\n"   "	mov	%1, #0\n"   "	b	2b\n"   "	.previous\n"   "	.section __ex_table,\"a\"\n"   "	.align	3\n"   "	.long	1b, 3b\n"   "	.previous"   : "+r" (err), "=&r" (x)   : "r" (addr), "i" (-EFAULT)   : "cc")
 #define __put_user(x,ptr)  ({   long __pu_err = 0;   __put_user_err((x),(ptr),__pu_err);   __pu_err;  })
 #define __put_user_error(x,ptr,err)  ({   __put_user_err((x),(ptr),err);   (void) 0;  })
 #define __put_user_err(x,ptr,err)  do {   unsigned long __pu_addr = (unsigned long)(ptr);   __typeof__(*(ptr)) __pu_val = (x);   __chk_user_ptr(ptr);   switch (sizeof(*(ptr))) {   case 1: __put_user_asm_byte(__pu_val,__pu_addr,err); break;   case 2: __put_user_asm_half(__pu_val,__pu_addr,err); break;   case 4: __put_user_asm_word(__pu_val,__pu_addr,err); break;   case 8: __put_user_asm_dword(__pu_val,__pu_addr,err); break;   default: __put_user_bad();   }  } while (0)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __put_user_asm_byte(x,__pu_addr,err)   __asm__ __volatile__(   "1:	strbt	%1,[%2],#0\n"   "2:\n"   "	.section .fixup,\"ax\"\n"   "	.align	2\n"   "3:	mov	%0, %3\n"   "	b	2b\n"   "	.previous\n"   "	.section __ex_table,\"a\"\n"   "	.align	3\n"   "	.long	1b, 3b\n"   "	.previous"   : "+r" (err)   : "r" (x), "r" (__pu_addr), "i" (-EFAULT)   : "cc")
 #ifndef __ARMEB__
 #define __put_user_asm_half(x,__pu_addr,err)  ({   unsigned long __temp = (unsigned long)(x);   __put_user_asm_byte(__temp, __pu_addr, err);   __put_user_asm_byte(__temp >> 8, __pu_addr + 1, err);  })
 #else
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __put_user_asm_half(x,__pu_addr,err)  ({   unsigned long __temp = (unsigned long)(x);   __put_user_asm_byte(__temp >> 8, __pu_addr, err);   __put_user_asm_byte(__temp, __pu_addr + 1, err);  })
 #endif
 #define __put_user_asm_word(x,__pu_addr,err)   __asm__ __volatile__(   "1:	strt	%1,[%2],#0\n"   "2:\n"   "	.section .fixup,\"ax\"\n"   "	.align	2\n"   "3:	mov	%0, %3\n"   "	b	2b\n"   "	.previous\n"   "	.section __ex_table,\"a\"\n"   "	.align	3\n"   "	.long	1b, 3b\n"   "	.previous"   : "+r" (err)   : "r" (x), "r" (__pu_addr), "i" (-EFAULT)   : "cc")
 #ifndef __ARMEB__
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __reg_oper0 "%R2"
 #define __reg_oper1 "%Q2"
 #else
 #define __reg_oper0 "%Q2"
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __reg_oper1 "%R2"
 #endif
 #define __put_user_asm_dword(x,__pu_addr,err)   __asm__ __volatile__(   "1:	strt	" __reg_oper1 ", [%1], #4\n"   "2:	strt	" __reg_oper0 ", [%1], #0\n"   "3:\n"   "	.section .fixup,\"ax\"\n"   "	.align	2\n"   "4:	mov	%0, %3\n"   "	b	3b\n"   "	.previous\n"   "	.section __ex_table,\"a\"\n"   "	.align	3\n"   "	.long	1b, 4b\n"   "	.long	2b, 4b\n"   "	.previous"   : "+r" (err), "+r" (__pu_addr)   : "r" (x), "i" (-EFAULT)   : "cc")
 #define __copy_from_user(to,from,n) (memcpy(to, (void __force *)from, n), 0)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __copy_to_user(to,from,n) (memcpy((void __force *)to, from, n), 0)
 #define __clear_user(addr,n) (memset((void __force *)addr, 0, n), 0)
-
 #define __copy_to_user_inatomic __copy_to_user
 #define __copy_from_user_inatomic __copy_from_user
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define strlen_user(s) strnlen_user(s, ~0UL >> 1)
 #endif