[PATCH] perf cs-etm: Bump minimum OpenCSD version to ensure a bugfix is present

Leo Yan leo.yan at linaro.org
Sun Sep 10 02:22:01 PDT 2023


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 at arm.com>

Tested-by: Leo Yan <leo.yan at linaro.org>



More information about the linux-arm-kernel mailing list