Re: [virtio-dev] Re: [PATCH V2 2/2] virtio-pci: add PASID configuration extended capability

[Stefan Hajnoczi <stefanha@redhat.com>]

On Thu, Jan 13, 2022 at 05:45:11AM -0500, Michael S. Tsirkin wrote:
> On Thu, Jan 13, 2022 at 10:32:11AM +0000, Stefan Hajnoczi wrote:
> > > So my understanding is that instead of delaying the response to read
> > > it's better to simply present the previous PASID value if there're any
> > > pending transactions of previous PASID value. The driver can then
> > > choose to poll or using timers etc.
> 
> Don't we limit these changes to before DRIVER_OK?
> If we do then no previous transactions can exist.

Not sure if that's possible for the vDPA virtqueue assignment use case
where one large VIRTIO device provides virtqueues for many smaller vDPA
devices?

Stefan

Attachment: signature.asc
Description: PGP signature