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| author | Eugenio Pérez <eperezma@redhat.com> | 2025-05-22 10:58:35 -0400 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2025-06-02 14:29:15 -0400 |
| commit | 32f0c7ce4c948b2e275dca3cf7fa2a00677b9c1d (patch) | |
| tree | 1658bef940925c446d0db85329bdff065c03375c | |
| parent | 3312e6c8c9aa8f32019f14c74d209db17b9306eb (diff) | |
| download | focaccia-qemu-32f0c7ce4c948b2e275dca3cf7fa2a00677b9c1d.tar.gz focaccia-qemu-32f0c7ce4c948b2e275dca3cf7fa2a00677b9c1d.zip | |
vdpa: set backend capabilities at vhost_vdpa_init
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. Tested-by: Lei Yang <leiyang@redhat.com> Reviewed-by: Si-Wei Liu <si-wei.liu@oracle.com> Acked-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Eugenio Pérez <eperezma@redhat.com> Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com> Message-Id: <20250522145839.59974-4-jonah.palmer@oracle.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | hw/virtio/vhost-vdpa.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 6b242ca56a..e9826ede2c 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -634,6 +634,12 @@ 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); @@ -1563,7 +1569,6 @@ 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, |