Re: [virtio-dev] Re: [PATCH v6] virtio-snd: add virtio sound device specification

[Gerd Hoffmann <kraxel@redhat.com>]

On Tue, Mar 03, 2020 at 12:28:32PM +0100, Anton Yakovlev wrote:
> Hi,
> 
> On 03.03.2020 12:20, Gerd Hoffmann wrote:
> >    Hi,
> > 
> > > 4. Introduce the polling mode feature for a message-based transport.
> > 
> > BTW: is that driver -> device or device -> driver or both?
> > In case both: should we have two separate feature flags maybe?
> 
> It's driver -> device direction. The driver needs notifications from the
> device in any case, so it makes no sense to suppress notifications in this
> direction (device -> driver).

Hmm, unless I missed something it doesn't matter whenever the guest
kernel checks virtqueues from irq handler or timer ...

cheers,
  Gerd