[CentOS] using kvm

Wed Jan 5 17:24:48 UTC 2011
Flaherty, Patrick <pflaherty at wsi.com>

>From what I remember "-cpu" is to tell the vm what cpu extensions are
available. I always just use  "-cpu host" which has kvm pass in all the
cpu extensions that the host processor has. 

Using WindowsXP mode on a windows 7 VM sounds dirty. XP mode used to
require virtualization hardware, now it doesn't. Perhaps passing in a
cpu that doesn't have virtualization extensions is the way to make
windows go the non-hardware route. I would expect the performance to be
abysmal, but it would be a neat trick.


> -----Original Message-----
> From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On
> Behalf Of Jerry Geis
> Sent: Wednesday, January 05, 2011 8:09 AM
> To: CentOS ML
> Subject: Re: [CentOS] using kvm
> >
> > I have not tried a VM within a VM (nested) although I have heard
> > it is possible.
> >
> > I guess the correct processor type could be passed with the "-cpu "
> parameter.
> >
> > -- Arun Khan
> >
> I have tried "-cpu phenum" which does not run at all.
> and I tried "-cpu core2duo" which runs the guest but does not run the
> VM
> within a VM.
> Thanks,
> Jerry
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