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| author | H. Peter Anvin <hpa@linux.intel.com> | 2014-05-30 15:19:21 (GMT) |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2014-05-30 15:19:21 (GMT) |
| commit | c9e5a5a7034146493386d985ff432aed8059929a (patch) | |
| tree | 7e814c4a1741ef21104bb21282f28b99c2c4ffd3 | |
| parent | 7496d6458fe3219d63848ce4a9afbd86245cab22 (diff) | |
| download | linux-c9e5a5a7034146493386d985ff432aed8059929a.tar.xz | |
x86/xsave: Make it clear that the XSAVE macros use (%edi)/(%rdi)
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
| -rw-r--r-- | arch/x86/include/asm/xsave.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/xsave.h b/arch/x86/include/asm/xsave.h index 1ba577c..bbebd6e 100644 --- a/arch/x86/include/asm/xsave.h +++ b/arch/x86/include/asm/xsave.h @@ -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" |