From: Michael S. Tsirkin <mst@redhat.com>
Date: Tue, 28 Feb 2012 07:07:58 +0000 (+0200)
Subject: tools/virtio: stub out strong barriers
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b17d5c6e190f3d328aae0444f8b93d58d0015714;p=linux-beck.git

tools/virtio: stub out strong barriers

The tool should never use them, abort if it does.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---

diff --git a/tools/virtio/linux/virtio.h b/tools/virtio/linux/virtio.h
index b4fbc91c41b4..7579f19e61e0 100644
--- a/tools/virtio/linux/virtio.h
+++ b/tools/virtio/linux/virtio.h
@@ -181,6 +181,9 @@ struct virtqueue {
 #define smp_mb()	mb()
 # define smp_rmb()	barrier()
 # define smp_wmb()	barrier()
+/* Weak barriers should be used. If not - it's a bug */
+# define rmb()	abort()
+# define wmb()	abort()
 #else
 #error Please fill in barrier macros
 #endif