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Commit 200b08a9 authored by Fenghua Yu's avatar Fenghua Yu Committed by H. Peter Anvin
Browse files

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: default avatarFenghua Yu <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/1401387164-43416-7-git-send-email-fenghua.yu@intel.com


Signed-off-by: default avatarH. Peter Anvin <hpa@linux.intel.com>
parent 0b29643a

arch/x86/include/asm/xsave.h

+6 −0
Original line number Diff line number Diff line
@@ -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;