Index: xen-unstable.hg/xen/include/asm-ia64/xensystem.h
===================================================================
--- xen-unstable.hg.orig/xen/include/asm-ia64/xensystem.h	2007-12-05 11:29:56.000000000 +0900
+++ xen-unstable.hg/xen/include/asm-ia64/xensystem.h	2007-12-05 11:30:02.000000000 +0900
@@ -30,8 +30,8 @@
 
 #define XEN_VIRT_UC_BIT	 57
 
-#define KERNEL_START		 0xf000000004000000
-#define XEN_HEAP_ADDR		 0xf400000004000000
+#define KERNEL_START		 0xf400000004000000
+#define XEN_HEAP_ADDR		 0xf000000004000000
 #define GATE_ADDR		 KERNEL_START
 
 /* In order for Kexec between Xen and Linux to work EFI needs