This is a note to let you know that I've just added the patch titled
perf cs-etm: Bump minimum OpenCSD version to ensure a bugfix is present
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
perf-cs-etm-bump-minimum-opencsd-version-to-ensure-a.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 6155ea685663fe91b410b46e5399675c438c34c6
Author: James Clark <james.clark@xxxxxxx>
Date: Fri Sep 1 14:37:15 2023 +0100
perf cs-etm: Bump minimum OpenCSD version to ensure a bugfix is present
[ Upstream commit 2dbba30fd69b604802a9535b74bddb5bcca23793 ]
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.
Reviewed-by: Ian Rogers <irogers@xxxxxxxxxx>
Signed-off-by: James Clark <james.clark@xxxxxxx>
Tested-by: Leo Yan <leo.yan@xxxxxxxxxx>
Cc: John Garry <john.g.garry@xxxxxxxxxx>
Cc: Mike Leach <mike.leach@xxxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20230901133716.677499-1-james.clark@xxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/tools/build/feature/test-libopencsd.c b/tools/build/feature/test-libopencsd.c
index eb6303ff446e..4cfcef9da3e4 100644
--- a/tools/build/feature/test-libopencsd.c
+++ b/tools/build/feature/test-libopencsd.c
@@ -4,9 +4,9 @@
/*
* Check OpenCSD library version is sufficient to provide required features
*/
-#define OCSD_MIN_VER ((1 << 16) | (1 << 8) | (1))
+#define OCSD_MIN_VER ((1 << 16) | (2 << 8) | (1))
#if !defined(OCSD_VER_NUM) || (OCSD_VER_NUM < OCSD_MIN_VER)
-#error "OpenCSD >= 1.1.1 is required"
+#error "OpenCSD >= 1.2.1 is required"
#endif
int main(void)
