Message ID | 58581C6F020000780012AA53@prv-mh.provo.novell.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
On 19/12/16 16:44, Jan Beulich wrote: > Commit 2fdf5b2554 ("x86: streamline copying to/from user memory") > wrongly used "g" here, when it obviously needs to be a register. > > Reported-by: Andrew Cooper <andrew.cooper3@citrix.com> > Signed-off-by: Jan Beulich <jbeulich@suse.com> Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
--- a/xen/arch/x86/usercopy.c +++ b/xen/arch/x86/usercopy.c @@ -141,7 +141,7 @@ unsigned clear_user(void __user *to, uns _ASM_EXTABLE(0b,3b) _ASM_EXTABLE(1b,2b) : [cnt] "=&c" (n), [to] "+D" (to) - : [bytes] "g" (n & (BYTES_PER_LONG - 1)), + : [bytes] "r" (n & (BYTES_PER_LONG - 1)), [longs] "0" (n / BYTES_PER_LONG), "a" (0) ); clac(); }