diff -rN -u -p old-xen-64-4/xen/include/asm-x86/page.h new-xen-64-4/xen/include/asm-x86/page.h
--- old-xen-64-4/xen/include/asm-x86/page.h	2005-06-02 18:10:30.000000000 +0000
+++ new-xen-64-4/xen/include/asm-x86/page.h	2005-06-02 18:13:36.000000000 +0000
@@ -12,6 +12,7 @@
 
 #ifndef __ASSEMBLY__
 # include <asm/types.h>
+# include <xen/lib.h>
 #endif
 
 #if defined(__i386__)