Re: [Qemu-devel] [libvirt] CPU model versioning separate from machine type versioning ?

[Eduardo Habkost]

On Fri, Jun 29, 2018 at 08:06:04AM +0200, Jiri Denemark wrote:
> On Thu, Jun 28, 2018 at 16:23:53 -0300, Eduardo Habkost wrote:
> > On Thu, Jun 28, 2018 at 07:59:38PM +0100, Dr. David Alan Gilbert wrote:
[...]
> > > Would you restrict the combinations to cut down the test matrix - e.g.
> > > not allow Haswell-3.0.0 on anything prior to a 2.12 machine type?
> > 
> > Not sure if it would be worth the extra complexity: we would need
> > an interface to tell libvirt which CPU models are usable on which
> > machine-types.
> 
> In case we do this, libvirt should already by ready for it on the API
> level for both reporting capabilities and CPU comparison/baseline. All
> these APIs already accept machine type as an optional parameter so that
> different results can be provided depending on machine type.

Does it have an abstraction that can already represent "CPU model
$C can/can't be used with machine-type $M"?

-- 
Eduardo