Re: [virtio-comment] [PATCH 5/5] virtio-pci: implement VIRTIO_F_QUEUE_STATE

["Zhu, Lingshan" <lingshan.zhu@intel.com>]

On 9/12/2023 6:40 PM, Parav Pandit wrote:
> > From: Zhu, Lingshan <lingshan.zhu@intel.com>
> > Sent: Tuesday, September 12, 2023 4:02 PM
> >
> > On 9/12/2023 6:25 PM, Parav Pandit wrote:
> > > > From: Zhu, Lingshan <lingshan.zhu@intel.com>
> > > > Sent: Tuesday, September 12, 2023 3:47 PM
> > > >
> > > > On 9/12/2023 5:28 PM, Parav Pandit wrote:
> > > > > > From: Zhu, Lingshan <lingshan.zhu@intel.com>
> > > > > > Sent: Tuesday, September 12, 2023 2:36 PM If you want AQ used for
> > > > > > LM, it should support nested anyway, don't break user logic.
> > > > > You ignored the other part of my question when you asked above.
> > > > > i.e. a PCI transport do not allow such weird bifurcation.
> > > > I failed to process your comment.
> > > > Do you mean the registers don't support nested?
> > > No. I mean registers access should support device reset flow and FLR flow.
> > DO you see this is a concern? Or why do you think there are problems?
> Yes. administration queue wont answer after SUSPEND is done in device status.
> So how do you plan to support AQ, inflight tracking dirty tracking and suspend device status?
>
> Device bifurcation is not supported in the pci spec and its hack in virtio to do so.
>
> As I asked few times before, if you have solved this, I am very interested to learn more about it.
Please read the series