On Tue, Mar 26, 2019 at 05:38:36PM +0000, Aaron Lindsay OS wrote: > On Mar 22 17:23, Andrew Jones wrote: > > cortex-a7 and cortex-a15 have pmus (PMUv2) and they advertise > > them in ID_DFR0. Let's allow them to function. This also enables > > the pmu cpu property to work with these cpu types, i.e. we can > > now do '-cpu cortex-a15,pmu=off' to remove the pmu. > > I'm a little nervous about this one, but PMUv2 isn't fresh enough in my > mind to have a good reason other than that I didn't consider it when > writing my recent PMU patches. Do you know if this boots a kernel that > can detect and use the PMU successfully while thinking it's PMUv2? >
I didn't try booting a kernel and running perf or anything like that. It does now run the pmu kvm-unit-tests test though. As this patch is now in master the test you propose can be done with a latest build :) Thanks, drew