Index: /trunk/src/VBox/VMM/VMMAll/PGMAllPool.cpp
===================================================================
--- /trunk/src/VBox/VMM/VMMAll/PGMAllPool.cpp	(revision 19794)
+++ /trunk/src/VBox/VMM/VMMAll/PGMAllPool.cpp	(revision 19795)
@@ -1116,4 +1116,5 @@
 
     pgmLock(pVM);
+    AssertMsg(PHYS_PAGE_ADDRESS(GCPhysFault) == PHYS_PAGE_ADDRESS(pPage->GCPhys), ("%RGp vs %RGp\n", PHYS_PAGE_ADDRESS(GCPhysFault), pPage->GCPhys));
 
     /*