[virtio-dev] Re: [PATCH v2 1/4] Add virtio Admin Virtqueue

[Cornelia Huck <cohuck@redhat.com>]

On Fri, Jan 28 2022, "Michael S. Tsirkin" <mst@redhat.com> wrote:

> On Fri, Jan 28, 2022 at 05:14:37PM +0100, Cornelia Huck wrote:
>> Maybe pci gets a new entry in common_cfg, mmio gets a new register, and
>> ccw gets a new command?
>
> That's fine.
>
>> (Although I'd prefer to be conservative with new
>> commands for ccw, maybe it's time to introduce a "get misc config" type
>> command that can be reused for other things. There's a generic ccw for
>> that, but adding new stuff to it would require an s390 architecture
>> change AFAIK, so I had decided not to go down that path for virtio.)
>
> You mean a generic "get misc config" for all transports? That's fine
> by me too. I suspect nvidia guys will need help building
> something like this though ...

I was more thinking about ccw only... not sure if we can define
something useful for all transports.

I'm willing to help with defining a ccw mechanism; I realize that this
will be hard for most people.

(Let's get agreement on whether we want to go down that route first.)


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