Re: [PATCH v3 05/12] qemu: Auto add pci-root for s390/s390x guests

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On Thu, 2018-08-16 at 17:01 +0200, Cornelia Huck wrote:
> On Thu, 16 Aug 2018 16:52:18 +0200 Andrea Bolognani <abologna@xxxxxxxxxx> wrote:
> > On Tue, 2018-08-07 at 17:10 +0800, Yi Min Zhao wrote:
> > > @@ -3227,6 +3227,7 @@ qemuDomainDefAddDefaultDevices(virDomainDefPtr def,
> > >      case VIR_ARCH_S390X:
> > >          addDefaultUSB = false;
> > >          addPanicDevice = true;
> > > +        addPCIRoot = virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_ZPCI);
> > >          break;  
> > 
> > I wonder if you might want to do this, and other stuff, only if
> > qemuDomainIsS390CCW()... It seems like that function is not used
> > a lot, which might mean that someone is going to have to perform
> > some serious cleaning up if there is ever another machine type
> > on s390, or perhaps that it just doesn't quite apply here.
> 
> Not a libvirt person, but that other QEMU s390 machine type is long
> gone (and was never supported in libvirt AFAIK anyway), and I don't see
> any reason to add an additional s390 machine type to QEMU from where we
> stand now.

New machine types happen when you least expect them :)

But given that the current code would need an overhaul anyway if a
new machine type was introduced, I'm okay with merging this as-is.

-- 
Andrea Bolognani / Red Hat / Virtualization

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