EDITME: cover title for arm64-gcs-flush-lock
To: Catalin Marinas <catalin.marinas@arm.com>
To: Will Deacon <will@kernel.org>
To: Thiago Jung Bauermann <thiago.bauermann@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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Mark Brown (1):
arm64/gcs: Flush the GCS locking state on exec
arch/arm64/kernel/process.c | 1 +
1 file changed, 1 insertion(+)
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base-commit: ac3fd01e4c1efce8f2c054cdeb2ddd2fc0fb150d
change-id: 20251128-arm64-gcs-flush-lock-163eab9c22f4
Best regards,
--
Mark Brown <broonie@kernel.org>
arm64/gcs: Flush the GCS locking state on exec
When we exec a new task we forget to flush the set of locked GCS mode bits.
Since we do flush the rest of the state this means that if GCS is locked
the new task will be unable to enable GCS, it will be locked as being
disabled. Add the expected flush.
Fixes: fc84bc5378a8 ("arm64/gcs: Context switch GCS state for EL0")
Reported-by: Yury Khrustalev <Yury.Khrustalev@arm.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
1 file changed
