From: "Michael S. Tsirkin" <mst@redhat.com>
To: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>,
Virtio-Dev <virtio-dev@lists.oasis-open.org>,
eperezma <eperezma@redhat.com>, Cindy Lu <lulu@redhat.com>
Subject: Re: [virtio-dev] Re: [PATCH V2 2/2] virtio-pci: add PASID configuration extended capability
Date: Thu, 13 Jan 2022 10:17:01 -0500 [thread overview]
Message-ID: <20220113101633-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <YeA88PL9oOfphhoa@stefanha-x1.localdomain>
On Thu, Jan 13, 2022 at 02:53:36PM +0000, Stefan Hajnoczi wrote:
> 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
Then I guess queue must be stopped?
--
MST
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next prev parent reply other threads:[~2022-01-13 15:17 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-12 5:57 [virtio-dev] [PATCH V2 0/2] virito-pci: PASID support Jason Wang
2022-01-12 5:57 ` [virtio-dev] [PATCH V2 1/2] virtio-pci: introduce virtio structure PCI Extended Capability Jason Wang
2022-01-12 10:10 ` [virtio-dev] " Stefan Hajnoczi
2022-01-13 0:55 ` Jason Wang
2022-01-13 10:19 ` Stefan Hajnoczi
2022-01-14 3:23 ` Jason Wang
2022-01-17 10:03 ` Stefan Hajnoczi
2022-01-12 5:57 ` [virtio-dev] [PATCH V2 2/2] virtio-pci: add PASID configuration extended capability Jason Wang
2022-01-12 10:41 ` [virtio-dev] " Stefan Hajnoczi
2022-01-13 1:24 ` Jason Wang
2022-01-13 10:32 ` Stefan Hajnoczi
2022-01-13 10:45 ` Michael S. Tsirkin
2022-01-13 14:53 ` Stefan Hajnoczi
2022-01-13 15:17 ` Michael S. Tsirkin [this message]
2022-01-14 3:15 ` Jason Wang
2022-01-14 10:38 ` Jean-Philippe Brucker
2022-01-17 5:58 ` Jason Wang
2022-01-14 9:43 ` Jean-Philippe Brucker
2022-01-17 5:57 ` Jason Wang
2022-01-19 18:01 ` Jean-Philippe Brucker
2022-01-19 23:53 ` Michael S. Tsirkin
2022-01-24 15:26 ` Jean-Philippe Brucker
2022-01-24 22:15 ` Michael S. Tsirkin
2022-01-12 10:44 ` [virtio-dev] Re: [PATCH V2 0/2] virito-pci: PASID support Stefan Hajnoczi
2022-01-13 1:28 ` Jason Wang
2022-01-13 10:36 ` Stefan Hajnoczi
2022-01-13 10:40 ` Michael S. Tsirkin
2022-01-14 2:53 ` Jason Wang
2022-01-13 15:18 ` Michael S. Tsirkin
2022-01-14 2:55 ` Jason Wang
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