From: Leo Yan <leo.yan@linaro.org>
To: James Clark <james.clark@arm.com>
Cc: linux-perf-users@vger.kernel.org,
John Garry <john.g.garry@oracle.com>,
Will Deacon <will@kernel.org>, Mike Leach <mike.leach@linaro.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] perf cs-etm: Bump minimum OpenCSD version to ensure a bugfix is present
Date: Sun, 10 Sep 2023 17:22:01 +0800 [thread overview]
Message-ID: <20230910092201.GA52362@leoy-huanghe.lan> (raw)
In-Reply-To: <20230901133716.677499-1-james.clark@arm.com>
On Fri, Sep 01, 2023 at 02:37:15PM +0100, James Clark wrote:
> Since commit d927ef5004ef ("perf cs-etm: Add exception level consistency
> check"), the exception that was added to Perf will be triggered unless
> the following bugfix from OpenCSD is present:
>
> - _Version 1.2.1_:
> - __Bugfix__:
> ETM4x / ETE - output of context elements to client can in some
> circumstances be delayed until after subsequent atoms have been
> processed leading to incorrect memory decode access via the client
> callbacks. Fixed to flush context elements immediately they are
> committed.
>
> Rather than remove the assert and silently fail, just increase the
> minimum version requirement to avoid hard to debug issues and
> regressions.
>
> Signed-off-by: James Clark <james.clark@arm.com>
Tested-by: Leo Yan <leo.yan@linaro.org>
prev parent reply other threads:[~2023-09-10 9:22 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-01 13:37 James Clark
2023-09-04 3:36 ` Ian Rogers
2023-11-23 14:31 ` Arnaldo Carvalho de Melo
2023-09-10 9:22 ` Leo Yan [this message]
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