[PATCH V2 6/8] mdev: introduce virtio device and its device ops

Michael S. Tsirkin
Thu, 26 Sep 2019 08:21:31 -0000

On Thu, Sep 26, 2019 at 12:04:46PM +0800, Jason Wang
wrote:
> > > > I'm not sure how stable above ops are.
> > > It's the kernel internal API, so there's no strict
requirement for this. We
> > > will export a version value for userspace for compatibility.
> > Given it's tied to virtio we probably want kernel+userspace
> > feature bits?
>
>
> Yes, then I think we could probably have a version field inside e.g
> device_ops structure. Then it could be fetched from both kernel and
> userspace driver.
>
> Thanks
>


my point was feature bits not a version number.

> >