Re: proposal: use admin command (and aq) of the device to query config space

["Michael S. Tsirkin" <mst@redhat.com>]

On Wed, Aug 02, 2023 at 11:58:31AM +0000, Parav Pandit wrote:
> 
> > From: Michael S. Tsirkin <mst@redhat.com>
> > Sent: Wednesday, August 2, 2023 5:24 PM
> 
> > > 2. Build SIOV device ground up that does not need to have existing limitations
> > of 1.x.
> > >
> > > The transport VQ proposal 4 patches had heavy inclination for #1 without
> > mentioning the real objective in the cover letter.
> > > I was proposing that when virtio builds SIOV device it should start with #2.
> > > Because #1 is sort of handled with sr-iov or vdpa already.
> > >
> > > #2 is more critical to get it right, after SIOV R2 spec is defined.
> > 
> > 
> > Can't we address both? E.g. use a different group type.
> 
> SIOV device is just one type, serving two kinds of commands one for supporting backward compat, second for newer interface.

Not sure about specifics but we can have two groups e.g. SIOV-compat and
SIOV-passthrough.