Re: [PATCH v1] s390/virtio_ccw: don't allocate/assign airqs for non-existing queues

[Michael S. Tsirkin]

On Mon, Apr 07, 2025 at 08:47:05PM +0200, David Hildenbrand wrote:
> > In my opinion, it makes the most sense to keep the spec as it is and
> > change QEMU and the kernel to match, but obviously that's not trivial
> > to do in a way that doesn't break existing devices and drivers.
> 
> If only it would be limited to QEMU and Linux ... :)
> 
> Out of curiosity, assuming we'd make the spec match the current QEMU/Linux
> implementation at least for the 3 involved features only, would there be a
> way to adjust crossvm without any disruption?
> 
> I still have the feeling that it will be rather hard to get that all
> implementations match the spec ... For new features+queues it will be easy
> to force the usage of fixed virtqueue numbers, but for free-page-hinting and
> reporting, it's a mess :(


Still thinking about a way to fix drivers... We can discuss this
theoretically, maybe?


-- 
MST