Messages in this thread | | | Date | Mon, 3 Jul 2023 17:26:02 -0700 | Subject | Re: [PATCH] mlx5_vdpa: offer VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK | From | Si-Wei Liu <> |
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On 7/3/2023 8:46 AM, Michael S. Tsirkin wrote: > On Mon, Jul 03, 2023 at 04:25:14PM +0200, Eugenio Pérez wrote: >> 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> > Same comment. to which?
-Siwei
> >> --- >> 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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