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| author | Eugenio Pérez <eperezma@redhat.com> | 2023-07-03 16:25:14 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-11-01 09:19:58 -0400 |
| commit | c695964474f3a80e1b7503e7cb15dd7d7f7245a1 (patch) | |
| tree | e23f681cafaf1e82576940f64a13c6ba4557bc89 /drivers/vdpa | |
| parent | 5dc31bd245a4fd7fe2d1fd79b7a2a81c96d6d33c (diff) | |
| download | linux-stable-c695964474f3a80e1b7503e7cb15dd7d7f7245a1.tar.gz linux-stable-c695964474f3a80e1b7503e7cb15dd7d7f7245a1.tar.bz2 linux-stable-c695964474f3a80e1b7503e7cb15dd7d7f7245a1.zip | |
mlx5_vdpa: offer VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK
Offer this backend feature as mlx5 is compatible with it. It allows it
to do live migration with CVQ, dynamically switching between passthrough
and shadow virtqueue.
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <20230703142514.363256-1-eperezma@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vdpa')
| -rw-r--r-- | drivers/vdpa/mlx5/net/mlx5_vnet.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c b/drivers/vdpa/mlx5/net/mlx5_vnet.c index 55f9233dedf1..f4516a2d5bb0 100644 --- a/drivers/vdpa/mlx5/net/mlx5_vnet.c +++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c @@ -7,6 +7,7 @@ #include <uapi/linux/virtio_net.h> #include <uapi/linux/virtio_ids.h> #include <uapi/linux/vdpa.h> +#include <uapi/linux/vhost_types.h> #include <linux/virtio_config.h> #include <linux/auxiliary_bus.h> #include <linux/mlx5/cq.h> @@ -2559,6 +2560,11 @@ static void unregister_link_notifier(struct mlx5_vdpa_net *ndev) flush_workqueue(ndev->mvdev.wq); } +static u64 mlx5_vdpa_get_backend_features(const struct vdpa_device *vdpa) +{ + return BIT_ULL(VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK); +} + static int mlx5_vdpa_set_driver_features(struct vdpa_device *vdev, u64 features) { struct mlx5_vdpa_dev *mvdev = to_mvdev(vdev); @@ -3234,6 +3240,7 @@ static const struct vdpa_config_ops mlx5_vdpa_ops = { .get_vq_group = mlx5_vdpa_get_vq_group, .get_vq_desc_group = mlx5_vdpa_get_vq_desc_group, /* Op disabled if not supported. */ .get_device_features = mlx5_vdpa_get_device_features, + .get_backend_features = mlx5_vdpa_get_backend_features, .set_driver_features = mlx5_vdpa_set_driver_features, .get_driver_features = mlx5_vdpa_get_driver_features, .set_config_cb = mlx5_vdpa_set_config_cb, |