diff -r 809ea782d2e6 -r 7ddd021a2079 xen/arch/x86/mm/hap/p2m-ept.c
--- a/xen/arch/x86/mm/hap/p2m-ept.c	Mon Mar 07 16:33:45 2011 +0000
+++ b/xen/arch/x86/mm/hap/p2m-ept.c	Mon Mar 07 16:41:02 2011 +0000
@@ -390,7 +390,7 @@
             new_entry.access = p2ma;
             new_entry.rsvd2_snp = (iommu_enabled && iommu_snoop);
 
-            if ( new_entry.mfn == mfn_x(mfn) )
+            if ( ept_entry->mfn == mfn_x(mfn) )
                 need_modify_vtd_table = 0;
             else
                 new_entry.mfn = mfn_x(mfn);
@@ -438,7 +438,7 @@
         new_entry.access = p2ma;
         new_entry.rsvd2_snp = (iommu_enabled && iommu_snoop);
 
-        if ( new_entry.mfn == mfn_x(mfn) )
+        if ( ept_entry->mfn == mfn_x(mfn) )
              need_modify_vtd_table = 0;
         else /* the caller should take care of the previous page */
             new_entry.mfn = mfn_x(mfn);