On 10/31/2019 5:23 AM, Christoph Hellwig wrote:

On Wed, Oct 30, 2019 at 02:44:44PM +0800, Jason Wang wrote:

...

This sample driver creates mdev device that simulate virtio net device over virtio mdev transport. The device is implemented through vringh and workqueue. A device specific dma ops is to make sure HVA is used directly as the IOVA. This should be sufficient for kernel virtio driver to work.

Only 'virtio' type is supported right now. I plan to add 'vhost' type on top which requires some virtual IOMMU implemented in this sample driver.

Can we please submit a real driver for it? A more or less useless sample driver doesn't really qualify for our normal kernel requirements that infrastructure should have a real user.

Hello Christoph,

I am working on a real hardware driver for it, it's called IFC, I have posted RFC V1 and will post RFC V2 soon.

Thanks, BR Zhu Lingshan