[RFC PATCH 23/27] vhost: unmap qemu's shadow virtqueues on sw live migration

[Eugenio Pérez]

Since vhost does not need to access it, it has no sense to keep it
mapped.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
---
 hw/virtio/vhost.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
index f640d4edf0..eebfac4455 100644
--- a/hw/virtio/vhost.c
+++ b/hw/virtio/vhost.c
@@ -1124,6 +1124,7 @@ static int vhost_sw_live_migration_start(struct vhost_dev 
*dev)
 
         dev->sw_lm_shadow_vq[idx] = vhost_sw_lm_shadow_vq(dev, idx);
         event_notifier_set_handler(&vq->masked_notifier, vhost_handle_call);
+        vhost_virtqueue_memory_unmap(dev, &dev->vqs[idx], true);
 
         vhost_vring_write_addr(dev->sw_lm_shadow_vq[idx], &addr);
         r = dev->vhost_ops->vhost_set_vring_addr(dev, &addr);
-- 
2.18.4