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authorIlya Maximets <i.maximets@samsung.com>2016-03-18 15:23:53 +0300
committerThomas Monjalon <thomas.monjalon@6wind.com>2016-03-31 17:09:23 +0200
commite994bcda55cc137697393cb8160981ea734687d9 (patch)
treed4ef274cd2f338bddd3c63ce2e4e0f4b8749080c /lib/librte_vhost
parent03ce29f2cb7e74fcc8457ae35367a1e7dc5250be (diff)
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vhost: use SMP barriers instead of compiler ones
Since commit 4c02e453cc62 ("eal: introduce SMP memory barriers") virtio uses architecture dependent SMP barriers. vHost should use them too. Fixes: 4c02e453cc62 ("eal: introduce SMP memory barriers") Signed-off-by: Ilya Maximets <i.maximets@samsung.com> Acked-by: Huawei Xie <huawei.xie@intel.com>
Diffstat (limited to 'lib/librte_vhost')
-rw-r--r--lib/librte_vhost/vhost_rxtx.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/lib/librte_vhost/vhost_rxtx.c b/lib/librte_vhost/vhost_rxtx.c
index 7d1224c..750821a 100644
--- a/lib/librte_vhost/vhost_rxtx.c
+++ b/lib/librte_vhost/vhost_rxtx.c
@@ -313,7 +313,7 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id,
rte_prefetch0(&vq->desc[desc_indexes[i+1]]);
}
- rte_compiler_barrier();
+ rte_smp_wmb();
/* Wait until it's our turn to add our buffer to the used ring. */
while (unlikely(vq->last_used_idx != res_start_idx))
@@ -563,7 +563,7 @@ virtio_dev_merge_rx(struct virtio_net *dev, uint16_t queue_id,
nr_used = copy_mbuf_to_desc_mergeable(dev, vq, start, end,
pkts[pkt_idx]);
- rte_compiler_barrier();
+ rte_smp_wmb();
/*
* Wait until it's our turn to add our buffer
@@ -921,7 +921,8 @@ rte_vhost_dequeue_burst(struct virtio_net *dev, uint16_t queue_id,
sizeof(vq->used->ring[used_idx]));
}
- rte_compiler_barrier();
+ rte_smp_wmb();
+ rte_smp_rmb();
vq->used->idx += i;
vhost_log_used_vring(dev, vq, offsetof(struct vring_used, idx),
sizeof(vq->used->idx));