Re: [virtio-comment] RE: [PATCH V2 3/6] virtio: dont reset vqs when SUSPEND

["Michael S. Tsirkin" <mst@redhat.com>]

On Tue, Nov 21, 2023 at 03:33:07PM +0800, Jason Wang wrote:
> > Lingshan claimed that suspending device is for live migration in commit log and in discussion he portray it as some basic facility unrelated to device migration such as debug etc.
> > Instead of claiming it as some non_device_migration facility does not make sense.
> 
> It is used for migration for sure.

Well having a generic facility to stop device sounds like a nice thing.
However the devil is in the detail. A lot of detail here seems very much
tailored to a very specific implementation in mind.
So thinking through how it will work e.g. for power management
would be a good excercise to figure out how it should work in detail.
Parav did you indicate at some point a virtio specific SUSPEND
bit can be useful for PM? Could you share how it's better than
transport level PM and what the requirements are?
Thanks!

-- 
MST


This publicly archived list offers a means to provide input to the
OASIS Virtual I/O Device (VIRTIO) TC.

In order to verify user consent to the Feedback License terms and
to minimize spam in the list archive, subscription is required
before posting.

Subscribe: virtio-comment-subscribe@lists.oasis-open.org
Unsubscribe: virtio-comment-unsubscribe@lists.oasis-open.org
List help: virtio-comment-help@lists.oasis-open.org
List archive: https://lists.oasis-open.org/archives/virtio-comment/
Feedback License: https://www.oasis-open.org/who/ipr/feedback_license.pdf
List Guidelines: https://www.oasis-open.org/policies-guidelines/mailing-lists
Committee: https://www.oasis-open.org/committees/virtio/
Join OASIS: https://www.oasis-open.org/join/