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Re: [Xen-devel] Configuration of nestedhvm

To: "Dong, Eddie" <eddie.dong@xxxxxxxxx>
Subject: Re: [Xen-devel] Configuration of nestedhvm
From: Keir Fraser <keir@xxxxxxx>
Date: Fri, 08 Oct 2010 08:12:04 +0100
Cc: Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
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Thread-topic: [Xen-devel] Configuration of nestedhvm
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On 08/10/2010 05:34, "Dong, Eddie" <eddie.dong@xxxxxxxxx> wrote:

> Nested virtualization usage model is emerging, however we must guarantee it
> won't impact the performance of simple virtualization.
> This patch add an boot parameter for nested virtualization, which is disabled
> by default for now.

What's the point when a per-domain config option is going to be implemented?
You can then simply not configure nestedhvm for a domain you want to test
without that capability? I suppose it makes your second patch make a bit
more sense than it would in total isolation.

I think patch#2 probably makes sense, but it should wait for the patch that
actually implements the per-domain config option, and properly implements
is_nestedhvm(), before going in.

 -- Keir



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