Re: [Qemu-devel] Modern CPU models cannot be used with libvirt

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On Mon, Mar 12, 2012 at 09:52:27AM -0300, Eduardo Habkost wrote:
> On Sun, Mar 11, 2012 at 09:12:58AM -0500, Anthony Liguori wrote:
> > On 03/11/2012 08:27 AM, Gleb Natapov wrote:
> > >On Sat, Mar 10, 2012 at 12:24:47PM -0600, Anthony Liguori wrote:
> > >>Let's step back here.
> > >>
> > >>Why are you writing these patches?  It's probably not because you
> > >>have a desire to say -cpu Westmere when you run QEMU on your laptop.
> > >>I'd wager to say that no human has ever done that or that if they
> > >>had, they did so by accident because they read documentation and
> > >>thought they had to.
> 
> No, it's because libvirt doesn't handle all the tiny small details
> involved in specifying a CPU. All libvirty knows about are a set of CPU
> flag bits, but it knows nothing about 'level', 'family', and 'xlevel',
> but we would like to allow it to expose a Westmere-like CPU to the
> guest.

This is easily fixable in libvirt - so for the point of going discussion,
IMHO, we can assume libvirt will support level, family, xlevel, etc.


Daniel
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