arch/x86/include/asm/uaccess_32.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_X86_UACCESS_32_H
   3 #define _ASM_X86_UACCESS_32_H
   4
   5 /*
   6  * User space memory access functions
   7  */
   8 #include <linux/string.h>
   9 #include <asm/asm.h>
  10 #include <asm/page.h>
  11
  12 unsigned long __must_check __copy_user_ll
  13                 (void *to, const void *from, unsigned long n);
  14 unsigned long __must_check __copy_from_user_ll_nocache_nozero
  15                 (void *to, const void __user *from, unsigned long n);
  16
  17 static __always_inline unsigned long __must_check
  18 raw_copy_to_user(void __user *to, const void *from, unsigned long n)
  19 {
  20         return __copy_user_ll((__force void *)to, from, n);
  21 }
  22
  23 static __always_inline unsigned long
  24 raw_copy_from_user(void *to, const void __user *from, unsigned long n)
  25 {
  26         return __copy_user_ll(to, (__force const void *)from, n);
  27 }
  28
  29 static __always_inline unsigned long
  30 __copy_from_user_inatomic_nocache(void *to, const void __user *from,
  31                                   unsigned long n)
  32 {
  33        return __copy_from_user_ll_nocache_nozero(to, from, n);
  34 }
  35
  36 #endif /* _ASM_X86_UACCESS_32_H */