From 200b08a970b2ae764b670a326088ab8bc0a989cc Mon Sep 17 00:00:00 2001 From: Fenghua Yu Date: Thu, 29 May 2014 11:12:34 -0700 Subject: [PATCH] x86/xsaves: Define macros for xsave instructions Define macros for xsave, xsaveopt, xsaves, xrstor, and xrstors inline instructions. The instructions will be used for saving and restoring xstate. Signed-off-by: Fenghua Yu Link: http://lkml.kernel.org/r/1401387164-43416-7-git-send-email-fenghua.yu@intel.com Signed-off-by: H. Peter Anvin --- arch/x86/include/asm/xsave.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/x86/include/asm/xsave.h b/arch/x86/include/asm/xsave.h index d949ef28c48b..71bdde45b519 100644 --- a/arch/x86/include/asm/xsave.h +++ b/arch/x86/include/asm/xsave.h @@ -52,6 +52,12 @@ extern void xsave_init(void); extern void update_regset_xstate_info(unsigned int size, u64 xstate_mask); extern int init_fpu(struct task_struct *child); +#define XSAVE ".byte " REX_PREFIX "0x0f,0xae,0x27" +#define XSAVEOPT ".byte " REX_PREFIX "0x0f,0xae,0x37" +#define XSAVES ".byte " REX_PREFIX "0x0f,0xc7,0x2f" +#define XRSTOR ".byte " REX_PREFIX "0x0f,0xae,0x2f" +#define XRSTORS ".byte " REX_PREFIX "0x0f,0xc7,0x1f" + static inline int fpu_xrstor_checking(struct xsave_struct *fx) { int err; -- 2.39.5