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Re: [Xen-users] pv_ops dom0 kernel and VT cpu extensions

To: Gerry Reno <greno@xxxxxxxxxxx>
Subject: Re: [Xen-users] pv_ops dom0 kernel and VT cpu extensions
From: "Fajar A. Nugraha" <fajar@xxxxxxxxx>
Date: Tue, 29 Dec 2009 11:24:17 +0700
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On Tue, Dec 29, 2009 at 11:01 AM, Gerry Reno <greno@xxxxxxxxxxx> wrote:
> As physical boxes gain more and more processing capability it makes no sense
> to restrict a physical machine to only a single hypervisor.
> Libvirt will support nested VM's that pass through the VT capabilities to
> the next level.  So it makes sense that Xen should be able to do the same
> thing and pass through the cpu VT capabilities to other hypervisors.  Is
> there some law of the universe that prevents this?

While KVM could probably do it, Xen currently can't. You might be able
to get more answers about "why" and possible time line to support it
(if any available) from xen-devel.


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