[PATCH -tip v4 4/4] kasan, x86: Don't rename memintrinsics in uninstrumented files

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Now that memcpy/memset/memmove are no longer overridden by KASAN, we can
just use the normal symbol names in uninstrumented files.

Drop the preprocessor redefinitions.

Fixes: 69d4c0d32186 ("entry, kasan, x86: Disallow overriding mem*() functions")
Signed-off-by: Marco Elver <elver@xxxxxxxxxx>
* New patch.
 arch/x86/include/asm/string_64.h | 19 -------------------
 1 file changed, 19 deletions(-)

diff --git a/arch/x86/include/asm/string_64.h b/arch/x86/include/asm/string_64.h
index 888731ccf1f6..c1e14cee0722 100644
--- a/arch/x86/include/asm/string_64.h
+++ b/arch/x86/include/asm/string_64.h
@@ -85,25 +85,6 @@ char *strcpy(char *dest, const char *src);
 char *strcat(char *dest, const char *src);
 int strcmp(const char *cs, const char *ct);
-#if (defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__))
- * For files that not instrumented (e.g. mm/slub.c) we
- * should use not instrumented version of mem* functions.
- */
-#undef memcpy
-#define memcpy(dst, src, len) __memcpy(dst, src, len)
-#undef memmove
-#define memmove(dst, src, len) __memmove(dst, src, len)
-#undef memset
-#define memset(s, c, n) __memset(s, c, n)
-#ifndef __NO_FORTIFY
-#define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */
 void __memcpy_flushcache(void *dst, const void *src, size_t cnt);

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