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[Xen-devel] [PATCH][SVM] CPL initialization fix
| To: | xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Robert Phillips <rphillips@xxxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] [PATCH][SVM] CPL initialization fix |
| From: | Ben Guthro <bguthro@xxxxxxxxxxxxxxx> |
| Date: | Mon, 10 Mar 2008 15:14:48 -0400 |
| Delivery-date: | Mon, 10 Mar 2008 12:15:45 -0700 |
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CPL should be determined by code segment's DPL, not data segment's. This solves a problem migrating a QEMU guest without PV-on-HVM drivers Signed-off-by: Robert Plillips <rphillips@xxxxxxxxxxxxxxx> Signed-off-by: Ben Guthro <bguthro@xxxxxxxxxxxxxxxx> diff -r f76f151a7431 xen/arch/x86/hvm/svm/svm.c
--- a/xen/arch/x86/hvm/svm/svm.c
+++ b/xen/arch/x86/hvm/svm/svm.c
@@ -557,7 +557,7 @@ static void svm_set_segment_register(str
break;
case x86_seg_ss:
memcpy(&vmcb->ss, reg, sizeof(*reg));
- vmcb->cpl = vmcb->ss.attr.fields.dpl;
+ vmcb->cpl = vmcb->cs.attr.fields.dpl;
break;
case x86_seg_tr:
memcpy(&vmcb->tr, reg, sizeof(*reg));
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