[COMMIT] [WIN-GUEST-DRIVERS] viostor driver.Add memory read barrier - synch with fix for Linux guests by Michael S. Tsirkin

Sun, 01 Nov 2009 05:24:18 -0800 

repository: C:/dev/kvm-guest-drivers-windows
branch: master
commit b68b7671ab3dd07f7f16e819db2d4060bbaeb901
Author: Yan Vugenfirer <yvuge...@redhat.com>
Date:   Sun Nov 1 15:23:20 2009 +0200

    [WIN-GUEST-DRIVERS] viostor driver.Add memory read barrier - synch with fix 
for Linux guests by Michael S. Tsirkin<m...@redhat.com>
    
         Signed-off-by: Vadim Rozenfeld<vroze...@redhat.com>

diff --git a/viostor/virtio_ring.c b/viostor/virtio_ring.c
index d099bb8..2911cef 100644
--- a/viostor/virtio_ring.c
+++ b/viostor/virtio_ring.c
@@ -237,6 +237,8 @@ vring_get_buf(
         return NULL;
     }
 
+    rmb();
+
     i = vq->vring.used->ring[vq->last_used_idx%vq->vring.num].id;
     *len = vq->vring.used->ring[vq->last_used_idx%vq->vring.num].len;
 
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