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RE: [Xen-devel] Re: Getting rid of xenbus_suspend(): tpmfrontdriver impa

To: "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx>, "Stefan Berger" <stefanb@xxxxxxxxxx>
Subject: RE: [Xen-devel] Re: Getting rid of xenbus_suspend(): tpmfrontdriver impacted?
From: "Tian, Kevin" <kevin.tian@xxxxxxxxx>
Date: Mon, 6 Nov 2006 21:43:18 +0800
Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Zhai, Edwin" <edwin.zhai@xxxxxxxxx>, xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
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Thread-topic: [Xen-devel] Re: Getting rid of xenbus_suspend(): tpmfrontdriver impacted?
>From: Keir Fraser [mailto:Keir.Fraser@xxxxxxxxxxxx]
>Sent: 2006年11月6日 21:40
>On 6/11/06 13:15, "Tian, Kevin" <kevin.tian@xxxxxxxxx> wrote:
>
>> For the migration case, the connection may still exist to the xenstored.
>> However for save/restore case, we destroy the domain once saved,
>> right? In that case, the connection is broken and next time you still
>> need to re-bind inter-domain xenbus channel (although local event
>> port is same) after resume, just like what's done for xenconsole.
>> Xenbus_suspend_cancel can save local state resume, but inter-
>> domain re-connection is inevitable, IMO. :-)
>
>Yes, we continue to require full re-connection if the save/restore or
>migration is successful and the guest is resumed in a new domain
>context.
>There's no question about that. Our aim here is to allow a save/restore or
>migration to fail gracfully by resuming execution in the original domain
>context. Currently that is simply not possible, but it's not hard to fix.
>
> -- Keir

I see, and it's a good enhancement. :-)

Thanks,
Kevin

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