From: Eugenio Pérez <epere...@redhat.com>
The backend does not reset them until the vdpa file descriptor is closed
so there is no harm in doing it only once.
This allows the destination of a live migration to premap memory in
batches, using VHOST_BACKEND_F_IOTLB_BATCH.
Signed-off-by: Eugenio Pérez <epere...@redhat.com>
Signed-off-by: Jonah Palmer <jonah.pal...@oracle.com>
---
hw/virtio/vhost-vdpa.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
index 79224d18d8..939a5a28a1 100644
--- a/hw/virtio/vhost-vdpa.c
+++ b/hw/virtio/vhost-vdpa.c
@@ -636,6 +636,12 @@ static int vhost_vdpa_init(struct vhost_dev *dev, void
*opaque, Error **errp)
v->dev = dev;
dev->opaque = opaque ;
v->shared->listener = vhost_vdpa_memory_listener;
+
+ ret = vhost_vdpa_set_backend_cap(dev);
+ if (unlikely(ret != 0)) {
+ return ret;
+ }
+
vhost_vdpa_init_svq(dev, v);
error_propagate(&dev->migration_blocker, v->migration_blocker);
@@ -1565,7 +1571,6 @@ const VhostOps vdpa_ops = {
.vhost_set_vring_kick = vhost_vdpa_set_vring_kick,
.vhost_set_vring_call = vhost_vdpa_set_vring_call,
.vhost_get_features = vhost_vdpa_get_features,
- .vhost_set_backend_cap = vhost_vdpa_set_backend_cap,
.vhost_set_owner = vhost_vdpa_set_owner,
.vhost_set_vring_endian = NULL,
.vhost_backend_memslots_limit = vhost_vdpa_memslots_limit,
--
2.43.5
