From ff8c51cf3ed2797961af74fd1cee299dfca13708 Mon Sep 17 00:00:00 2001
From: Marcel Moolenaar <marcel@FreeBSD.org>
Date: Sat, 22 Nov 2008 06:56:49 +0000
Subject: [PATCH] Define mb(), rmb() and wmb() for real.

---
 sys/ia64/include/atomic.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sys/ia64/include/atomic.h b/sys/ia64/include/atomic.h
index fdfcb9ebaf3..d2f88748351 100644
--- a/sys/ia64/include/atomic.h
+++ b/sys/ia64/include/atomic.h
@@ -29,9 +29,9 @@
 #ifndef _MACHINE_ATOMIC_H_
 #define	_MACHINE_ATOMIC_H_
 
-#define	mb()
-#define	wmb()
-#define	rmb()
+#define	mb()	__asm __volatile("mf")
+#define	wmb()	mb()
+#define	rmb()	mb()
 
 /*
  * Various simple arithmetic on memory which is atomic in the presence