From c695964474f3a80e1b7503e7cb15dd7d7f7245a1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= Date: Mon, 3 Jul 2023 16:25:14 +0200 Subject: mlx5_vdpa: offer VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Message-Id: <20230703142514.363256-1-eperezma@redhat.com> Signed-off-by: Michael S. Tsirkin --- drivers/vdpa/mlx5/net/mlx5_vnet.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/vdpa') 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 #include #include +#include #include #include #include @@ -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, -- cgit v1.2.3