RE: [PATCH v6 4/4] transport-pci: Introduce group legacy group member config region access

[Parav Pandit <parav@nvidia.com>]

> From: Michael S. Tsirkin <mst@redhat.com>
> Sent: Monday, June 19, 2023 1:20 PM

> > It is reused, but it doesnt come for free.
> > Do you want to re-consider AQ notify query command?
> > Or continue as proposed in v6?
> 
> 
> If we can't just make it come for free then maybe
> VIRTIO_PCI_CAP_LEGACY_NOTIFY_CFG is better, we can just list the number in
> the common section and then link to the description in the new section.
>
How is it better? It requires burning more bytes.
Is it better because it is self contained?
 
> I also feel we want ability to have such a capability in the owner too.
> Would prefer including it now though I guess we can add it as an extension.

Re-opening the past discussion.. amazing. :)

Why? How is it different and better than querying over AQ?
I see the AQ is better than group owner and group member specific cap.