SDM rev 071 points out this fact explicitly.
Signed-off-by: Jan Beulich <jbeul...@suse.com>
--- a/xen/arch/x86/x86_emulate/x86_emulate.c
+++ b/xen/arch/x86/x86_emulate/x86_emulate.c
@@ -4246,10 +4246,12 @@ x86_emulate(
{
/*
* xbegin unconditionally aborts, xabort is unconditionally
- * a nop.
+ * a nop. It also does not truncate the destination address to
+ * 16 bits when 16-bit operand size is in effect.
*/
if ( b & 1 )
{
+ op_bytes = 4;
jmp_rel((int32_t)src.val);
_regs.r(ax) = 0;
}
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