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Re: [Xen-devel] [PATCH] x86/hvm: determine shared info format earlier

To: Jan Beulich <jbeulich@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH] x86/hvm: determine shared info format earlier
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Tue, 15 May 2007 08:16:16 +0100
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On 15/5/07 08:13, "Jan Beulich" <jbeulich@xxxxxxxxxx> wrote:

>> I don't think this works since the PV drivers don't re-create the hypercall
>> page after save/restore (bad us!).
> This must be fixed then. I don't think it's appropriate for them to assume
> the hypercall page doesn't change its layout across suspend.

I agree.

>> We could sample the execution mode in *both* places (new and old)?
> Even if it gets fixed in the drivers?

Is that unreasonable?

 -- Keir

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