Index: xen-ia64-unstable-wip.hg/linux-2.6-xen-sparse/fs/Kconfig
===================================================================
--- xen-ia64-unstable-wip.hg.orig/linux-2.6-xen-sparse/fs/Kconfig	2007-05-09 19:21:42.000000000 +0900
+++ xen-ia64-unstable-wip.hg/linux-2.6-xen-sparse/fs/Kconfig	2007-05-09 19:23:29.000000000 +0900
@@ -826,6 +826,11 @@ config PROC_VMCORE
         help
         Exports the dump image of crashed kernel in ELF format.
 
+config PROC_IOMEM_MACHINE
+	bool
+	depends on PROC_FS && EXPERIMENTAL && KEXEC && XEN && IA64
+	default y
+
 config SYSFS
 	bool "sysfs file system support" if EMBEDDED
 	default y