From 8bc7de0c5dc0a5d3bcdc04bac6de0c799f91c5e4 Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Wed, 25 Jun 2008 14:53:41 -0300 Subject: x86: put movsl_mask into uaccess.h. x86_64 does not need it, but it won't have X86_INTEL_USERCOPY defined either. Signed-off-by: Glauber Costa Signed-off-by: H. Peter Anvin Signed-off-by: Ingo Molnar --- include/asm-x86/uaccess.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/asm-x86/uaccess.h') diff --git a/include/asm-x86/uaccess.h b/include/asm-x86/uaccess.h index 7c7b46af6368..0c4ab788d017 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 -- cgit v1.2.3