Ian, the change from testb to cmp in this patch is incorrect - suffix-less cmp with no register operands defaults to 32-bit operand size (and I consider it a flaw of gas to not warn about this), this needs to be cmpb. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel