Linux Virtualization - Nov 2019 - [RFC V4 2/2] This commit introduced IFC operations for vdpa

On 2019/11/20 ??5:17, Zhu Lingshan wrote:
> +
> +	if (!strcmp(kobj->name, "ifcvf-virtio_mdev"))
> +		mdev_virtio_set_class_id(mdev,MDEV_VIRTIO_CLASS_ID_VIRTIO);
> +
> +	if (!strcmp(kobj->name, "ifcvf-vhost_mdev"))
> +		mdev_virtio_set_class_id(mdev,MDEV_VIRTIO_CLASS_ID_VHOST);
> +
> +	mdev_set_drvdata(mdev, adapter);
> +	mdev_set_iommu_device(mdev_dev(mdev), dev);
> +	adapter->mdev_count--;
> +

To avoid confusion, it's better to call mdev_set_iommu_device() only for 
the case of vhost. For virtio, it doesn't depends on that to work.

Thanks