Tim Deegan
2011-Jan-19 11:37 UTC
[Xen-devel] [PATCH] x86_emulate: set the operand size for SMSW/reg writeback.
x86_emulate: set the operand size for SMSW/reg writeback.
Otherwise it defaults to 0 bytes.
Signed-off-by: Tim Deegan <Tim.Deegan@citrix.com>
diff -r d1631540bcc4 xen/arch/x86/x86_emulate/x86_emulate.c
--- a/xen/arch/x86/x86_emulate/x86_emulate.c Tue Jan 18 17:23:24 2011 +0000
+++ b/xen/arch/x86/x86_emulate/x86_emulate.c Wed Jan 19 11:34:22 2011 +0000
@@ -3557,6 +3557,8 @@ x86_emulate(
case 4: /* smsw */
if ( ea.type == OP_MEM )
ea.bytes = 2;
+ else
+ ea.bytes = op_bytes;
dst = ea;
fail_if(ops->read_cr == NULL);
if ( (rc = ops->read_cr(0, &dst.val, ctxt)) )
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