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Re: [Xen-devel] treatment grant frames during save/restore

To: <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] treatment grant frames during save/restore
From: "Jan Beulich" <JBeulich@xxxxxxxxxx>
Date: Thu, 27 May 2010 16:37:34 +0100
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>>> On 27.05.10 at 17:27, "Jan Beulich" <JBeulich@xxxxxxxxxx> wrote:
> From what I can tell, grant frames get no special treatment by the tools
> during save, and hence get treated as normal memory during restore.
> If that's correct, it would seem that there's an accounting issue, since
> during restore a normal RAM page will be allocated by the tools for each
> grant frame, hence a domain that prior to save was below its limit
> could now end up crossing that limit, and thus unexpectedly fail to
> restore. If that's not a possibility, what am I missing?

Ooops, just noticed that I didn't say explicitly that this is for HVM
guests.

Thanks, Jan


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