diff -Naurp xen-unstable.hg-10729/xen/arch/x86/mm.c xen-unstable.hg-10729-emulate/xen/arch/x86/mm.c
--- xen-unstable.hg-10729/xen/arch/x86/mm.c	2006-07-25 17:05:33.000000000 -0500
+++ xen-unstable.hg-10729-emulate/xen/arch/x86/mm.c	2006-07-25 17:03:40.000000000 -0500
@@ -3582,7 +3582,7 @@ int ptwr_do_page_fault(struct domain *d,
         return 0;
     }
 
-#if 0 /* Leave this in as useful for debugging */ 
+#if 1 /* Leave this in as useful for debugging */ 
     goto emulate; 
 #endif