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Re: [Xen-devel] [PATCH 0/6] PM extension to domU

  • To: "Tian, Kevin" <kevin.tian@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
  • Date: Tue, 06 Feb 2007 21:45:19 +0000
  • Delivery-date: Tue, 06 Feb 2007 13:45:01 -0800
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcdJxpGp/qx+TgWOS6iQUGwbfBu5mQAcYarI
  • Thread-topic: [Xen-devel] [PATCH 0/6] PM extension to domU

On 6/2/07 08:12, "Tian, Kevin" <kevin.tian@xxxxxxxxx> wrote:

> For the new added commands "sleep/wake", I'm not sure whether
> it's preferred way. Since it's purpose is very simple by sending suspend
> notification to domU, I choose to add instead of intervening complex
> logic of save/restore. Anyway, their names do explain different meaning
> indeed.
> Verified on Cset 13803.

Have you considered destroying and recreating driver domains rather than
sleeping them? They are stateless after all, and should be quick (enough) to

We want to support driver domain restart anyway for driver-bug isolation.
The question mark there is whether we have the xenbus protocol sorted out
yet to allow frontends to automatically reconnect. You don't even have to
worry about that if you're prepared to do lightweight suspend/resume of all
non-driver domains across S3.

 -- Keir

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