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Re: [Xen-devel] Testing for shadow modes

from [Tim Deegan]

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To:	Daniel Stodden <stodden@xxxxxxxxxx>
Subject:	Re: [Xen-devel] Testing for shadow modes
From:	Tim Deegan <Tim.Deegan@xxxxxxxxxxxxx>
Date:	Mon, 8 Oct 2007 09:29:26 +0100
Cc:	Xen Developers <xen-devel@xxxxxxxxxxxxxxxxxxx>
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At 15:57 +0200 on 07 Oct (1191772654), Daniel Stodden wrote:
> I'm looking for the 'correct' way to inquire about the present shadow
> mode of a running domain. OP_ENABLE_TEST sounds interesting, but does
> not look like what I mean it to do.
>
> Is this just missing, or am I missing something?

Yep, it's just missing.  You _can_ query how much shadow memory is
allocated for the domain, and it would be straightforward to add a
shadow operation to query the current mode.  If you're the control
tools, you might remember what you've done to the domain before.  Also,
operations like enabling shadow mode ought to be idempotent.

Cheers,

Tim.

-- 
Tim Deegan <Tim.Deegan@xxxxxxxxxxxxx>, XenSource UK Limited
Registered office c/o EC2Y 5EB, UK; company number 05334508

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