On Fri, Nov 27, 2020 at 12:03:35PM +0000, Suzuki K Poulose wrote: > On 11/27/20 6:03 AM, Wei Li wrote: > > Armv8.3 extends the SPE by adding: > > - Alignment field in the Events packet, and filtering on this event > > using PMSEVFR_EL1. > > - Support for the Scalable Vector Extension (SVE). > > > > The main additions for SVE are: > > - Recording the vector length for SVE operations in the Operation Type > > packet. It is not possible to filter on vector length. > > - Incomplete predicate and empty predicate fields in the Events packet, > > and filtering on these events using PMSEVFR_EL1. > > > > Update the check of pmsevfr for empty/partial predicated SVE and > > alignment event in SPE driver. For adaption by the version of SPE, > > expose 'pmsver' as cap attribute to userspace. > > > > Signed-off-by: Wei Li <liwei...@huawei.com> > > nit: Do we need to update the Kconfig help text too ? Right now that says : > > -- > > > tristate "Enable support for the ARMv8.2 Statistical Profiling Extension"" > .... > > help > Enable perf support for the ARMv8.2 Statistical Profiling > Extension, which provides periodic sampling of operations in
I think it's ok as-is, to be honest. It identifies the version of the architecture when the feature was introduced, and I think it's only reasonable to assume that subsequent versions of the architecture might add extensions. Will
