tree 0310d3cc53bb9b9dc9472448155b2442b86f79c6
parent 861fec459bb4db69123c3b320e1bad9585cdb524
author Maxime Coquelin <maxime.coquelin@redhat.com> 1510858114 +0100
committer Michael S. Tsirkin <mst@redhat.com> 1512147958 +0200

virtio: Add queue interface to restore avail index from vring used index

In case of backend crash, it is not possible to restore internal
avail index from the backend value as vhost_get_vring_base
callback fails.

This patch provides a new interface to restore internal avail index
from the vring used index, as done by some vhost-user backend on
reconnection.

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>