Re: [External] Re: [PATCH v3 3/4] content: Introduce driver/device auxiliary notifications for MMIO

[Usama Arif <usama.arif@bytedance.com>]

On 27/10/2022 22:27, Stefan Hajnoczi wrote:
> On Fri, Oct 07, 2022 at 05:56:42PM +0100, Usama Arif wrote:
> > This includes the additions to the corresponding device and driver
> > conformances.
> >
> > Signed-off-by: Usama Arif <usama.arif@bytedance.com>
> > Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
>
> You can keep this. One thought:
>
> I realized that virtio-mmio support won't be very useful until
> virtio-mmio gets MSI-X support because drivers currently cannot
> differentiate between device auxiliary notifications.
>
> Stefan

Did you mean drivers currently cannot differentiate between "driver" 
auxiliary notifications? The driver will be able to be able to choose 
the index it wants to notifiy using DeviceAuxNotificationIndex.

I can add the following line in the Interrupt Status change of the patch 
if it makes sense?
"As MSI-X is not available, it is not possible to determine which driver 
auxiliary notification occured, hence only a single notification is 
supported."

Thanks,
Usama