Re: [virtio-comment] RE: [PATCH v3 2/2] content: Support enabling virtqueue after DRIVER_OK stage

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

On Thu, Oct 26, 2023 at 08:38:51AM +0000, Parav Pandit wrote:
> > 
> > > The question is, do we need this generic facility beyond virtio-net?
> > 
> > I would try to avoid solutions specific for virtio-net, as other devices may need
> > to reuse them and it would be bad to need to add quirks for that.
> No need to add the quirk.
> But I would like to listen if there is any concrete requirement.
> And if there is, possibly such device can add the cvq at that point for dynamic work.
> So, this will still provide the unified approach when/if needed on other devices.

What do you want to know? Whether dynamically adding/deleting queues is
useful generally? For example, queue per CPU is not uncommon to avoid
need for locks. In the presence of CPU hotplug, the natural thing to do
is to add/delete them.

-- 
MST