linux-kernel - Re: [RFC V4 2/2] This commit introduced IFC operations for vdpa

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Date:   Mon, 25 Nov 2019 16:19:46 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     Zhu Lingshan <lingshan.zhu@...el.com>, mst@...hat.com,
        alex.williamson@...hat.com
Cc:     linux-kernel@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, kvm@...r.kernel.org,
        netdev@...r.kernel.org, dan.daly@...el.com,
        cunming.liang@...el.com, tiwei.bie@...el.com, jason.zeng@...el.com,
        zhiyuan.lv@...el.com
Subject: Re: [RFC V4 2/2] This commit introduced IFC operations for vdpa


On 2019/11/20 下午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