From: Suzuki K Poulose <suzuki.poulose@arm.com>
To: Anshuman Khandual <anshuman.khandual@arm.com>,
linux-arm-kernel@lists.infradead.org
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
coresight@lists.linaro.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH V2 4/7] arm64: errata: Add detection for TRBE trace data corruption
Date: Fri, 7 Jan 2022 11:58:28 +0000 [thread overview]
Message-ID: <fb1fb13b-a685-ccda-f381-6e6919fdb707@arm.com> (raw)
In-Reply-To: <1641517808-5735-5-git-send-email-anshuman.khandual@arm.com>
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>
next prev parent reply other threads:[~2022-01-07 11:58 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-07 1:10 [PATCH V2 0/7] coresight: trbe: Workaround Cortex-A510 erratas Anshuman Khandual
2022-01-07 1:10 ` [PATCH V2 1/7] arm64: Add Cortex-A510 CPU part definition Anshuman Khandual
2022-01-07 10:56 ` Catalin Marinas
2022-01-07 1:10 ` [PATCH V2 2/7] arm64: errata: Add detection for TRBE ignored system register writes Anshuman Khandual
2022-01-07 10:58 ` Catalin Marinas
2022-01-07 11:39 ` Suzuki K Poulose
2022-01-07 1:10 ` [PATCH V2 3/7] arm64: errata: Add detection for TRBE invalid prohibited states Anshuman Khandual
2022-01-07 10:59 ` Catalin Marinas
2022-01-07 11:56 ` Suzuki K Poulose
2022-01-07 1:10 ` [PATCH V2 4/7] arm64: errata: Add detection for TRBE trace data corruption Anshuman Khandual
2022-01-07 10:59 ` Catalin Marinas
2022-01-07 11:58 ` Suzuki K Poulose [this message]
2022-01-07 1:10 ` [PATCH V2 5/7] coresight: trbe: Work around the ignored system register writes Anshuman Khandual
2022-01-10 11:03 ` Suzuki K Poulose
2022-01-10 11:59 ` Anshuman Khandual
2022-01-07 1:10 ` [PATCH V2 6/7] coresight: trbe: Work around the invalid prohibited states Anshuman Khandual
2022-01-10 12:03 ` Suzuki K Poulose
2022-01-07 1:10 ` [PATCH V2 7/7] coresight: trbe: Work around the trace data corruption Anshuman Khandual
2022-01-10 12:04 ` Suzuki K Poulose
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