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

On Thu, Oct 26, 2023 at 09:24:06AM +0000, Parav Pandit wrote:
> > From: Michael S. Tsirkin <mst@redhat.com>
> > Sent: Thursday, October 26, 2023 2:46 PM
> > > 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.
> So for those devices who care for such performance, it is reasonable for them to have the cvq providing channel for complex and dynamic commands.

Again, let's please not waste time adding this piecemeal to each device
type, this is clearly a generic thing that belongs in the core.

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