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 <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/1401387164-43416-7-git-send-email-fenghua.yu@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

diff --git a/arch/x86/include/asm/xsave.h b/arch/x86/include/asm/xsave.h
index d949ef28c48bd9c423c5c668a1b0ce61ed70cac5..71bdde45b51903e7323c619c22355fdd4188ff3d 100644 (file)
--- 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;