diff options
Diffstat (limited to 'include/asm-x86/uaccess.h')
| -rw-r--r-- | include/asm-x86/uaccess.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/asm-x86/uaccess.h b/include/asm-x86/uaccess.h index 7c7b46af636..0c4ab788d01 100644 --- a/include/asm-x86/uaccess.h +++ b/include/asm-x86/uaccess.h @@ -432,6 +432,15 @@ struct __large_struct { unsigned long buf[100]; }; #define __get_user_unaligned __get_user #define __put_user_unaligned __put_user +/* + * movsl can be slow when source and dest are not both 8-byte aligned + */ +#ifdef CONFIG_X86_INTEL_USERCOPY +extern struct movsl_mask { + int mask; +} ____cacheline_aligned_in_smp movsl_mask; +#endif + #ifdef CONFIG_X86_32 # include "uaccess_32.h" #else |