Messages in this thread | | | Date | Thu, 5 Dec 2019 09:02:32 +0000 | From | Will Deacon <> | Subject | Re: [RFC 3/3] KVM: arm64: pmu: Enforce PMEVTYPER evtCount size |
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On Wed, Dec 04, 2019 at 09:44:26PM +0100, Eric Auger wrote: > ARMv8.1-PMU supports 16-bit evtCount whereas 8.0 only supports > 10 bits. > > On Seatlle which has an 8.0 PMU implementation, evtCount[15:10] > are not read as 0, as expected. Fix that by applying a mask on > the selected event that depends on the PMU version.
Are you sure about that? These bits are RES0 in 8.0 afaict, so this would be a CPU erratum. Have you checked the SDEN document (I haven't)?
Will
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