linux-kernel - Re: [PATCH v2 0/7] perf: Arm SPEv1.2 support

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Date:   Fri, 4 Nov 2022 09:47:13 -0500
From:   Rob Herring <robh@...nel.org>
To:     James Clark <james.clark@....com>
Cc:     kvmarm@...ts.cs.columbia.edu, kvmarm@...ts.linux.dev,
        linux-arm-kernel@...ts.infradead.org,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        Mark Brown <broonie@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        James Morse <james.morse@....com>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Marc Zyngier <maz@...nel.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Will Deacon <will@...nel.org>,
        Alexandru Elisei <alexandru.elisei@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Oliver Upton <oliver.upton@...ux.dev>,
        Jiri Olsa <jolsa@...nel.org>
Subject: Re: [PATCH v2 0/7] perf: Arm SPEv1.2 support

On Fri, Nov 4, 2022 at 6:30 AM James Clark <james.clark@....com> wrote:
>
>
>
> On 19/10/2022 20:11, Rob Herring wrote:
> > This series adds support for Arm SPEv1.2 which is part of the
> > Armv8.7/Armv9.2 architecture. There's 2 new features that affect the
> > kernel: a new event filter bit, branch 'not taken', and an inverted
> > event filter register.
> >
> > Since this support adds new registers and fields, first the SPE register
> > defines are converted to automatic generation.
> >
> > Note that the 'config3' addition in sysfs format files causes SPE to
> > break. A stable fix e552b7be12ed ("perf: Skip and warn on unknown format
> > 'configN' attrs") landed in v6.1-rc1.
> >
> > The perf tool side changes are available here[1].
> >
> > Tested on FVP.
> >
> > [1] https://lore.kernel.org/all/20220914-arm-perf-tool-spe1-2-v2-v4-0-83c098e6212e@kernel.org/
> >
>
> LGTM. Tested with [1] applied and on N1SDP (where it isn't supported),
> and on the FVP. Enabling all the inverted filters results in no trace
> and other combinations work as expected.

Thanks, I'll take that as a 'Tested-by' tag if that's okay.

In the future, please be explicit with tags. Tools such as b4 and
patchwork will recognize them and add them automatically.

Rob