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

[Paolo Bonzini]

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.

Paolo