[Xen-changelog] [xen-unstable] Fix check if guest enabled nested paging.

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Christoph Egger <Christoph.Egger@xxxxxxx>
# Date 1340615903 -3600
# Node ID 8c70ad9fd221c4e1549579b63ad20d0f8d4ced83
# Parent  836db8c4b9f9eacd4ccbd0743a862b16b7c2434c
Fix check if guest enabled nested paging.

Fixes crashes with Windows guests when shadow-on-nested is used.

Signed-off-by: Christoph Egger <Christoph.Egger@xxxxxxx>
Acked-by: Tim Deegan <tim@xxxxxxx>
---


diff -r 836db8c4b9f9 -r 8c70ad9fd221 xen/arch/x86/hvm/svm/nestedsvm.c
--- a/xen/arch/x86/hvm/svm/nestedsvm.c  Fri Jun 22 17:43:30 2012 +0100
+++ b/xen/arch/x86/hvm/svm/nestedsvm.c  Mon Jun 25 10:18:23 2012 +0100
@@ -935,6 +935,9 @@ nsvm_vmcb_guest_intercepts_exitcode(stru
         return 0;
 
     case VMEXIT_NPF:
+        if (nestedhvm_paging_mode_hap(v))
+            break;
+        return 0;
     case VMEXIT_INVALID:
         /* Always intercepted */
         break;

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