[Xen-changelog] [xen-unstable] svm: Reported SS.DPL must equal CPL, as this is assumed by generic HVM

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1205853995 0
# Node ID c4de138175712f661e0a5bbe35b8834711db63b7
# Parent  b2a3fe7f5591e3358aede7d05a4e8705e49ae13d
svm: Reported SS.DPL must equal CPL, as this is assumed by generic HVM
code despite the fact that AMD processors do not always maintain this
invariant.

Based on a bug report and proposed patch by Ben Guthro and Robert
Phillips of Virtual Iron.

Signed-off-by: Keir Fraser <keir.fraser@xxxxxxxxxx>
---
 xen/arch/x86/hvm/svm/svm.c |    1 +
 1 files changed, 1 insertion(+)

diff -r b2a3fe7f5591 -r c4de13817571 xen/arch/x86/hvm/svm/svm.c
--- a/xen/arch/x86/hvm/svm/svm.c        Tue Mar 18 15:23:25 2008 +0000
+++ b/xen/arch/x86/hvm/svm/svm.c        Tue Mar 18 15:26:35 2008 +0000
@@ -495,6 +495,7 @@ static void svm_get_segment_register(str
         break;
     case x86_seg_ss:
         memcpy(reg, &vmcb->ss, sizeof(*reg));
+        reg->attr.fields.dpl = vmcb->cpl;
         break;
     case x86_seg_tr:
         svm_sync_vmcb(v);

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