x86: define architectural characteristics in uaccess.h.

Remove them from the arch-specific file.
Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

include/asm-x86/uaccess.h

@@ -441,9 +441,12 @@ extern struct movsl_mask {
 } ____cacheline_aligned_in_smp movsl_mask;
 #endif
 
+#define ARCH_HAS_NOCACHE_UACCESS 1
+
 #ifdef CONFIG_X86_32
 # include "uaccess_32.h"
 #else
+# define ARCH_HAS_SEARCH_EXTABLE
 # include "uaccess_64.h"
 #endif
 

include/asm-x86/uaccess_32.h

@@ -156,8 +156,6 @@ __copy_from_user(void *to, const void __user *from, unsigned long n)
 	return __copy_from_user_ll(to, from, n);
 }
 
-#define ARCH_HAS_NOCACHE_UACCESS
-
 static __always_inline unsigned long __copy_from_user_nocache(void *to,
 				const void __user *from, unsigned long n)
 {

include/asm-x86/uaccess_64.h

@@ -9,8 +9,6 @@
 #include <linux/prefetch.h>
 #include <asm/page.h>
 
-#define ARCH_HAS_SEARCH_EXTABLE
-
 /*
  * Copy To/From Userspace
  */
@@ -180,7 +178,6 @@ __copy_to_user_inatomic(void __user *dst, const void *src, unsigned size)
 	return copy_user_generic((__force void *)dst, src, size);
 }
 
-#define ARCH_HAS_NOCACHE_UACCESS 1
 extern long __copy_user_nocache(void *dst, const void __user *src,
 				unsigned size, int zerorest);