From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rusty Russell <rusty@rustcorp.com.au>
Subject: [PATCH 2/2] tools/virtio: make barriers stronger.
Date: Wed, 06 Mar 2013 15:54:42 +1100
Message-ID: <87vc95b019.fsf@rustcorp.com.au>
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Cc: sjur@brendeland.net, Linus Walleij <linus.walleij@linaro.org>, Erwan Yvin <erwan.yvin@stericsson.com>, virtualization@lists.linux-foundation.org, sjur.brandeland@stericsson.com
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In the coming vringh_test, we share an mmap with another userspace process
for testing.  This requires real barriers.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

diff --git a/tools/virtio/asm/barrier.h b/tools/virtio/asm/barrier.h
index aff61e1..7a63693 100644
--- a/tools/virtio/asm/barrier.h
+++ b/tools/virtio/asm/barrier.h
@@ -3,8 +3,8 @@
 #define mb() __sync_synchronize()
 
 #define smp_mb()	mb()
-# define smp_rmb()	barrier()
-# define smp_wmb()	barrier()
+# define smp_rmb()	mb()
+# define smp_wmb()	mb()
 /* Weak barriers should be used. If not - it's a bug */
 # define rmb()	abort()
 # define wmb()	abort()