On 10/22/2012 08:23 AM, Michael S. Tsirkin wrote:
> On Mon, Oct 22, 2012 at 07:00:56AM -0600, Eric Blake wrote:
>> On 10/22/2012 07:16 AM, Michael S. Tsirkin wrote:
>>
>>> I worry about need to maintain  bug for bug compatibility on the
>>> unlikely chance that the work to complete it gets delayed and we release
>>> it in an unready state.
>>>
>>>> But in any case this needs
>>>> discussion with the libvirt folks to make sure it will actually work as
>>>> intended.  /me tends to think a experimental bit in machine_info (which
>>>> is then printed by 'qemu -M ?' and the QOM-version of that) is more
>>>> useful than playing tricks with the name.
>>>>
>>>> cheers,
>>>>   Gerd
>>>
>>> I agree it's best to ask libvirt folks what's the right way to hide
>>> a machine type from it. Add a flag so it's not listed in -M ?  ?
>>
>> For qemu 1.3, libvirt will NOT be reading '-M ?', but instead calling
>> the 'query-machines' QMP command.  If you want a machine to be avoided
>> by libvirt, then perhaps it is best to augment the MachineInfo QMP
>> datatype to add an optional field that says whether a particular machine
>> type is stable enough for libvirt's use.
> 
> Or just hide this machine type from the query-machines command?

That would probably work, as well.

-- 
Eric Blake   eblake@redhat.com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org