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SubjectRe: [PATCH V2 4/7] arm64: errata: Add detection for TRBE trace data corruption
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On 07/01/2022 01:10, Anshuman Khandual wrote:
> 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
> Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
> ---
> Documentation/arm64/silicon-errata.rst | 2 ++
> arch/arm64/Kconfig | 18 ++++++++++++++++++
> arch/arm64/kernel/cpu_errata.c | 9 +++++++++
> arch/arm64/tools/cpucaps | 1 +
> 4 files changed, 30 insertions(+)

Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>

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