]> git.baikalelectronics.ru Git - kernel.git/commit
arm64: errata: Add detection for TRBE trace data corruption
authorAnshuman Khandual <anshuman.khandual@arm.com>
Tue, 25 Jan 2022 14:20:34 +0000 (19:50 +0530)
committerMathieu Poirier <mathieu.poirier@linaro.org>
Thu, 27 Jan 2022 19:01:53 +0000 (12:01 -0700)
commit708e8af4924ec2fdd5b81fe09192c6bac2f86935
tree67d94b1158ba787bd00437ab4e17747266a6a820
parent3bd94a8759de9b724b83a80942b0354acd7701eb
arm64: errata: Add detection for TRBE trace data corruption

TRBE implementations affected by Arm erratum #1902691 might corrupt trace
data or deadlock, when it's being written into the memory. So effectively
TRBE is broken and hence cannot be used to capture trace data. This adds
a new errata ARM64_ERRATUM_1902691 in arm64 errata framework.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Suzuki Poulose <suzuki.poulose@arm.com>
Cc: coresight@lists.linaro.org
Cc: linux-doc@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/1643120437-14352-5-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Documentation/arm64/silicon-errata.rst
arch/arm64/Kconfig
arch/arm64/kernel/cpu_errata.c
arch/arm64/tools/cpucaps