On 20 August 2014 16:08, Joel Schopp <joel.sch...@amd.com> wrote: > > On 08/19/2014 05:43 PM, Peter Maydell wrote: >> On 19 August 2014 22:33, Joel Schopp <joel.sch...@amd.com> wrote: >>> I'm running on a system with 8 cpus and it would be nice to have qemu >>> support all of them. The attached patch does that and has been tested. >>> >>> That said, I'm not sure if 8 is enough or if we want to bump this even >>> higher >>> now before systems with many more cpus come along. 255 anyone? >> 8 is the limit for a GICv2 system. But yes, we could have 8 CPUs >> here; I think this was just copied over from the vexpress boards >> (which have 4 because that hardware has 4.) > So the question is do we want to wait for the GICv3 changes to be merged > to bump this to 255? If we do want to wait then applying my patch that > bumps it to 8 is the right thing to do now.
I'm not currently aware of any GICv3 support patches for QEMU (I know there is some kernel work); it's the view the guest sees that matters, and for QEMU based guests that has to be v2 currently. So yes, we should bump to 8 for now. -- PMM
