vhost: fix IOTLB on NUMA realloc

In case of NUMA reallocation, virtqueue's iotlb list is broken,
has its head changes but first iotlb entry in the list still points
to the previous head pointer.

Also, in case of reallocation, we want the IOTLB cache mempool to be
on the new socket.

This patch perform a full re-init of the IOTLB cache when mempool
already exists, and calls the IOTLB cache init function in case
the virtqueue is being reallocated on a new socket.

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Jens Freimann <jfreimann@redhat.com>

diff --git a/lib/librte_vhost/iotlb.c b/lib/librte_vhost/iotlb.c
index 05c2780..b74cc6a 100644 (file)
--- a/lib/librte_vhost/iotlb.c
+++ b/lib/librte_vhost/iotlb.c
@@ -309,7 +309,6 @@ vhost_user_iotlb_init(struct virtio_net *dev, int vq_index)
                 */
                vhost_user_iotlb_cache_remove_all(vq);
                vhost_user_iotlb_pending_remove_all(vq);
-               return 0;
        }
 
 #ifdef RTE_LIBRTE_VHOST_NUMA

diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
index 9acac61..1dfb234 100644 (file)
--- a/lib/librte_vhost/vhost_user.c
+++ b/lib/librte_vhost/vhost_user.c
@@ -314,6 +314,9 @@ out:
        dev->virtqueue[index] = vq;
        vhost_devices[dev->vid] = dev;
 
+       if (old_vq != vq)
+               vhost_user_iotlb_init(dev, index);
+
        return dev;
 }
 #else