Re: [Qemu-devel] QEMU: PCI bus name on PowerPC platforms

[Alexander Graf]

On 27.04.14 18:16, Paolo Bonzini wrote:
> Il 11/04/2014 14:27, Eric Blake ha scritto:
> > But with just this patch, you have caused the situation where it is
> > neither introspectible, nor consistent across qemu versions. The only
> > way to code that up in libvirt is to do MULTIPLE version checks and
> > correlate it with architecture checks - and that's the hack we don't
> > want to have to support.  Every single version check done in lieu of
> > proper feature introspection is yet one more pain point when features
> > get backported across version numbers downstream.
>
> Or just stop catering to anything but the latest QEMU version for ARM 
> and PPC and s390.  Nobody can really say with a straight face that the 
> interface is even remotely stable, especially as these platforms are 
> going through the very same painful discoveries we had with x86 
> (changing hardware when command line options are reordered, for 
> example) and do not even have versioned machine types yet.

Yes, I think that makes the most sense. And if you really have to do a 
downstream frankenstein QEMU version, patch your downstream frankenstein 
libvirt version accordingly.


Alex