diff -ur xen-4.2.2.orig/tools/debugger/gdbsx/xg/xg_main.c xen-4.2.2/tools/debugger/gdbsx/xg/xg_main.c
--- tools/debugger/gdbsx/xg/xg_main.c	2013-04-24 00:42:55.000000000 +0800
+++ tools/debugger/gdbsx/xg/xg_main.c	2013-05-16 00:22:39.263704336 +0800
@@ -50,6 +50,7 @@
 #include "xg_public.h"
 #include <xen/version.h>
 #include <xen/domctl.h>
+#include <sys/types.h>
 #include <xen/sys/privcmd.h>
 #include <xen/foreign/x86_32.h>
 #include <xen/foreign/x86_64.h>