diff options
| author | H. Peter Anvin <hpa@zytor.com> | 2010-05-10 13:41:41 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2010-05-10 13:41:41 -0700 |
| commit | dce8bf4e115aa44d590802ce3554e926840c9042 (patch) | |
| tree | 9ad06695bb99cd815152ec61dce75fd5a792b1bf | |
| parent | c3f8978ea332cd4be88e12574452a025892ac9af (diff) | |
x86, fpu: Use the proper asm constraint in use_xsave()
The proper constraint for a receiving 8-bit variable is "=qm", not
"=g" which equals "=rim"; even though the "i" will never match, bugs
can and do happen due to the difference between "q" and "r".
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Avi Kivity <avi@redhat.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
LKML-Reference: <1273135546-29690-2-git-send-email-avi@redhat.com>
| -rw-r--r-- | arch/x86/include/asm/i387.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/i387.h b/arch/x86/include/asm/i387.h index 1a8cca33b73..8002e9ce25f 100644 --- a/arch/x86/include/asm/i387.h +++ b/arch/x86/include/asm/i387.h @@ -64,7 +64,7 @@ static inline bool use_xsave(void) alternative_io("mov $0, %0", "mov $1, %0", X86_FEATURE_XSAVE, - "=g"(has_xsave)); + "=qm" (has_xsave)); return has_xsave; } |