From 9727279886e870b67a99aa94f851ac9d6fbc7fbb Mon Sep 17 00:00:00 2001
From: Peter Wemm <peter@FreeBSD.org>
Date: Mon, 16 Aug 2004 22:57:47 +0000
Subject: [PATCH] Sync with i386 - add foot shooting protection for the DDB/KDB
 thing.

---
 sys/amd64/amd64/machdep.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sys/amd64/amd64/machdep.c b/sys/amd64/amd64/machdep.c
index 81c0949cbfe9..3ec46a01edf7 100644
--- a/sys/amd64/amd64/machdep.c
+++ b/sys/amd64/amd64/machdep.c
@@ -95,6 +95,11 @@ __FBSDID("$FreeBSD$");
 #include <sys/exec.h>
 #include <sys/cons.h>
 
+#ifdef DDB
+#ifndef KDB
+#error KDB must be enabled in order for DDB to work!
+#endif
+#endif
 #include <ddb/ddb.h>
 
 #include <net/netisr.h>