On Tue, Dec 15, 2015 at 04:03:13PM +0000, Peter Maydell wrote: > On 15 December 2015 at 14:12, Martin Kletzander <mkletzan@xxxxxxxxxx> wrote: > > On Tue, Dec 15, 2015 at 09:41:02AM +0000, Peter Maydell wrote: > >> > >> On 15 December 2015 at 09:36, Martin Kletzander <mkletzan@xxxxxxxxxx> > >> wrote: > >>> > >>> We do pass some options, for example, you can restrict the GIC to v2: > >>> https://libvirt.org/formatdomain.html#elementsFeatures > >>> > >>> That could be modified to work for your purpose IIUC, right? > >> > >> > >> What does that option do to the QEMU command line? The documentation > >> doesn't seem to say. > >> > > > > It appends gic-version= to the machine option, if bunch of conditions > > are met -- it has to be ARM machine, it has to be something else than > > version 2, and so on, more details are visible in the code and I won't > > cover them here. I hope that's understandable. > > OK. So it should be sufficient just to have > <gic version='host'/> > which will then provide whatever VGIC the host machine can do with > hardware acceleration. This is probably good for guests that happy with both. Guests that need/want a specific choice will put their integer there, and then we need a way to do a capabilities check before launching that guest on an arbitrary host. drew -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list