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

[Gerry Reno <greno@xxxxxxxxxxx>]

Fajar A. Nugraha wrote:
> On Tue, Dec 29, 2009 at 8:11 AM, Gerry Reno <greno@xxxxxxxxxxx> wrote:
>   
> > My question is how can I
> > get pv_ops dom0 kernel or Xen 3.4.1 to pass the cpu VT flags through so that
> > existing KVM guests will run with cpu VT acceleration at full speed?
> >     
> AFAIK you can't. The same reason why you can't get Virtualbox and KVM
> to use VT together.
> Only one virtualization technology can use VT at the same time.
>
>   
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?
-Gerry


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