linux-kernel - Re: [PATCH V3 RESEND 0/7] coresight: trbe: Workaround Cortex-A510 erratas

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Date:   Fri, 28 Jan 2022 10:51:42 +0000
From:   Catalin Marinas <catalin.marinas@....com>
To:     Mathieu Poirier <mathieu.poirier@...aro.org>
Cc:     Anshuman Khandual <anshuman.khandual@....com>,
        linux-arm-kernel@...ts.infradead.org,
        Will Deacon <will@...nel.org>,
        Suzuki Poulose <suzuki.poulose@....com>,
        coresight@...ts.linaro.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH V3 RESEND 0/7] coresight: trbe: Workaround Cortex-A510
 erratas

Hi Mathieu,

On Thu, Jan 27, 2022 at 01:22:20PM -0700, Mathieu Poirier wrote:
> On Tue, Jan 25, 2022 at 07:50:30PM +0530, Anshuman Khandual wrote:
> > Anshuman Khandual (7):
> >   arm64: Add Cortex-A510 CPU part definition
> >   arm64: errata: Add detection for TRBE ignored system register writes
> >   arm64: errata: Add detection for TRBE invalid prohibited states
> >   arm64: errata: Add detection for TRBE trace data corruption
> >   coresight: trbe: Work around the ignored system register writes
> >   coresight: trbe: Work around the invalid prohibited states
> >   coresight: trbe: Work around the trace data corruption
> > 
> >  Documentation/arm64/silicon-errata.rst       |   6 +
> >  arch/arm64/Kconfig                           |  59 ++++++++++
> >  arch/arm64/include/asm/cputype.h             |   2 +
> >  arch/arm64/kernel/cpu_errata.c               |  27 +++++
> >  arch/arm64/tools/cpucaps                     |   3 +
> >  drivers/hwtracing/coresight/coresight-trbe.c | 114 ++++++++++++++-----
> >  drivers/hwtracing/coresight/coresight-trbe.h |   8 --
> >  7 files changed, 183 insertions(+), 36 deletions(-)
> 
> I have applied this set and sent a pull request to Catalin for the arm64
> portion.

Well, I'm happy for the whole series to go in via Greg's tree or however
the coresight patches go in (that's why I acked them). The last three
patches depend on the first four, so you might as well send them all
together. I'd split the series only if there's a conflict with the arm64
tree (I haven't checked).

-- 
Catalin