Messages in this thread Patch in this message | | | From | Eugenio Pérez <> | Subject | [PATCH] mlx5_vdpa: offer VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK | Date | Mon, 3 Jul 2023 16:25:14 +0200 |
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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> --- drivers/vdpa/mlx5/net/mlx5_vnet.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c b/drivers/vdpa/mlx5/net/mlx5_vnet.c index 9138ef2fb2c8..5f309a16b9dc 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> @@ -2499,6 +2500,11 @@ 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); @@ -3140,6 +3146,7 @@ static const struct vdpa_config_ops mlx5_vdpa_ops = { .get_vq_align = mlx5_vdpa_get_vq_align, .get_vq_group = mlx5_vdpa_get_vq_group, .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, -- 2.39.3
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