[Xen-changelog] [xen-4.0-testing] x86_emulate: set the operand size for SMSW/reg writeback.

["Xen patchbot-4.0-testing" <patchbot@xxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir@xxxxxxx>
# Date 1295625784 0
# Node ID 9b453f96dd4658744bb530a6c6d59dbf25d11bd2
# Parent  f47b924f74af83edc9a3020d38b7d5beb95c9dcc
x86_emulate: set the operand size for SMSW/reg writeback.
Otherwise it defaults to 0 bytes.

Signed-off-by: Tim Deegan <Tim.Deegan@xxxxxxxxxx>
Signed-off-by: Keir Fraser <keir@xxxxxxx>
xen-unstable changeset:   22782:fe8a177ae9cb
xen-unstable date:        Wed Jan 19 15:29:04 2011 +0000
---
 xen/arch/x86/x86_emulate/x86_emulate.c |    3 +--
 1 files changed, 1 insertion(+), 2 deletions(-)

diff -r f47b924f74af -r 9b453f96dd46 xen/arch/x86/x86_emulate/x86_emulate.c
--- a/xen/arch/x86/x86_emulate/x86_emulate.c    Tue Jan 18 12:25:54 2011 +0000
+++ b/xen/arch/x86/x86_emulate/x86_emulate.c    Fri Jan 21 16:03:04 2011 +0000
@@ -3555,8 +3555,7 @@ x86_emulate(
                 goto done;
             break;
         case 4: /* smsw */
-            if ( ea.type == OP_MEM )
-                ea.bytes = 2;
+            ea.bytes = (ea.type == OP_MEM) ? 2 : op_bytes;
             dst = ea;
             fail_if(ops->read_cr == NULL);
             if ( (rc = ops->read_cr(0, &dst.val, ctxt)) )

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