RE: [Xen-devel] A simple question of CPU emulation in Xen

[Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>]

> From: Alan Cox [mailto:alan@xxxxxxxxxxxxxxxxxxx]
> Subject: Re: [Xen-devel] A simple question of CPU emulation in Xen
> 
> On Fri, 13 May 2011 22:41:44 +0800
> MaoXiaoyun <tinnycloud@xxxxxxxxxxx> wrote:
> 
> >
> > Hi :
> >
> >      I have a simple question on CPU emulation in Xen.
> >
> >     Currently, inside guest, we can see that the CPU information
> incluing types and frequency is exactly
> > same as physical CPU. Is it possible for Xen(or qemu) to emulate a
> different type of CPU. That is inside
> > guest, we see a different CPU types?
> 
> Qemu supports a huge range of CPU and platform emulations,
> www.qemu.org.
> Most of this falls outside of Xen as Qemu doesn't need or benefit from
> Xen or KVM when doing cross cpu emulation.

Also see "MagiXen: Combining Binary Translation and Virtualization"
here: http://www.hpl.hp.com/techreports/2007/HPL-2007-77.html 

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