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

[Anthony Liguori]

On 03/25/2012 08:08 AM, Avi Kivity wrote:
> On 03/25/2012 02:55 PM, Anthony Liguori wrote:
>>> If cpu models are not part of configuration they should not be affected
>>> by configuration mechanism. You are just avoiding addressing the real
>>> question that if asked above.
>>
>>
>> I think you're just refusing to listen.
>>
>> The stated direction of QEMU, for literally years now, is that we want
>> to arrive at the following:
>>
>> QEMU is composed of a series of objects who's relationships can be
>> fully described by an external configuration file.  Much of the
>> current baked in concepts (like machines) would then become
>> configuration files.
>>
>> qemu -M pc
>>
>> Would effectively be short hand for -readconfig
>> /usr/share/qemu/machines/pc.cfg
>
> In that case
>
>   qemu -cpu westmere
>
> is shorthand for -readconfig /usr/share/qemu/cpus/westmere.cfg.

This is not a bad suggestion, although it would make -cpu ? a bit awkward.  Do 
you see an advantage to this over having /usr/share/qemu/target-x86_64-cpus.cfg 
that's read early on?

>> I think the thread has reduced to: should /usr/share configuration
>> files be read by default or just treated as additional configuration
>> files.
>
> If they're read as soon as they're referenced, what's the difference?

I suspect libvirt would not be happy with reading configuration files on demand..

Regards,

Anthony Liguori