diff -r 3161879fdf22 include/xen/interface/arch-ia64.h
--- a/include/xen/interface/arch-ia64.h	Tue Sep 16 21:26:15 2008 +0900
+++ b/include/xen/interface/arch-ia64.h	Thu Oct 02 13:57:05 2008 +0900
@@ -453,6 +453,11 @@
 /* unexpose the foreign domain's p2m table into privileged domain */
 #define IA64_DOM0VP_unexpose_foreign_p2m        13
 
+/* get memmap_info and memmap. It is possible to map the page directly
+   by foreign page mapping, but there is a race between writer.
+   This hypercall avoids such race. */
+#define IA64_DOM0VP_get_memmap          14
+
 // flags for page assignement to pseudo physical address space
 #define _ASSIGN_readonly                0
 #define ASSIGN_readonly                 (1UL << _ASSIGN_readonly)