On Mon, 3 Dec 2018 at 20:45, Aaron Lindsay <[email protected]> wrote: > > On Nov 30 16:10, Peter Maydell wrote: > > PMCEID2 and PMCEID3 are only defined from ARMv8.1; before that they > > are UNDEFINED. So these registers need to be only defined if a > > suitable feature bit or ID register field check passes. > > It looks like we don't currently support any ARMv8.1+ CPUs and don't > have an entry in the `arm_features` enum for it. I'll plan to add > ARM_FEATURE_V81 and make defining these registers depend on it, assuming > any future CPUs supporting it will use that, unless you feel I should do > something different.
I think that the idea going forward is to prefer an ID register check of some kind -- Richard ? thanks -- PMM
