Index: /trunk/src/VBox/VMM/VMMAll/PGMAllShw.h
===================================================================
--- /trunk/src/VBox/VMM/VMMAll/PGMAllShw.h	(revision 30363)
+++ /trunk/src/VBox/VMM/VMMAll/PGMAllShw.h	(revision 30364)
@@ -202,5 +202,6 @@
         return VERR_PAGE_TABLE_NOT_PRESENT;
 
-    Assert(!Pde.b.u1Size);
+    /** todo deal with large pages. */
+    AssertFatal(!Pde.b.u1Size);
 
     /*
@@ -340,4 +341,6 @@
         if (!Pde.n.u1Present)
             return VERR_PAGE_TABLE_NOT_PRESENT;
+
+        AssertFatal(!Pde.b.u1Size);
 
         /*