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authorH. Peter Anvin <hpa@zytor.com>2010-05-10 13:41:41 -0700
committerH. Peter Anvin <hpa@zytor.com>2010-05-10 13:41:41 -0700
commitdce8bf4e115aa44d590802ce3554e926840c9042 (patch)
tree9ad06695bb99cd815152ec61dce75fd5a792b1bf /arch
parentc3f8978ea332cd4be88e12574452a025892ac9af (diff)
downloadlinux-2.6.34-ux500-dce8bf4e115aa44d590802ce3554e926840c9042.tar.gz
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/include/asm/i387.h2
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;
}