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vhost: fix IOTLB mempool single-consumer flag

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Control thread (which handles iotlb msg) and forwarding thread
both use iotlb to translate address. The former may modify the
same entry of mempool and may cause a loop in iotlb_pending_entries
list.

Bugzilla ID: 523
Fixes: d012d1f293f4 ("vhost: add IOTLB helper functions")
Cc: stable@dpdk.org

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
This commit is contained in:
Eugenio Pérez 2020-08-31 09:59:22 +02:00 committed by Ferruh Yigit
parent e8671aca20
commit 46d3f57537
1 changed files with 1 additions and 2 deletions
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3
lib/librte_vhost/iotlb.c
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@ -321,8 +321,7 @@ vhost_user_iotlb_init(struct virtio_net *dev, int vq_index)
IOTLB_CACHE_SIZE, sizeof(struct vhost_iotlb_entry), 0,
0, 0, NULL, NULL, NULL, socket,
MEMPOOL_F_NO_CACHE_ALIGN |
MEMPOOL_F_SP_PUT |
MEMPOOL_F_SC_GET);
MEMPOOL_F_SP_PUT);
if (!vq->iotlb_pool) {
VHOST_LOG_CONFIG(ERR,
"Failed to create IOTLB cache pool (%s)\n",