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>
alternative_io("mov $0, %0",
"mov $1, %0",
X86_FEATURE_XSAVE,
- "=g"(has_xsave));
+ "=qm" (has_xsave));
return has_xsave;
}