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x86/xsave: Make it clear that the XSAVE macros use (%edi)/(%rdi)

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The XSAVE instruction family takes a memory argment.  The macros use
(%edi)/(%rdi) as that memory argument - make that clear to the reader.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/1401387164-43416-7-git-send-email-fenghua.yu@intel.com
This commit is contained in:
H. Peter Anvin
2014-05-30 08:19:21 -07:00
parent 7496d6458f
commit c9e5a5a703
1 changed files with 1 additions and 0 deletions
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arch/x86/include/asm/xsave.h
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@@ -52,6 +52,7 @@ 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);
/* These macros all use (%edi)/(%rdi) as the single memory argument. */
#define XSAVE ".byte " REX_PREFIX "0x0f,0xae,0x27"
#define XSAVEOPT ".byte " REX_PREFIX "0x0f,0xae,0x37"
#define XSAVES ".byte " REX_PREFIX "0x0f,0xc7,0x2f"