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Message-ID: <YdgdJyjvSt8iQ6RB@arm.com>
Date:   Fri, 7 Jan 2022 10:59:51 +0000
From:   Catalin Marinas <catalin.marinas@....com>
To:     Anshuman Khandual <anshuman.khandual@....com>
Cc:     linux-arm-kernel@...ts.infradead.org,
        Will Deacon <will@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Suzuki Poulose <suzuki.poulose@....com>,
        coresight@...ts.linaro.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2 4/7] arm64: errata: Add detection for TRBE trace data
 corruption

On Fri, Jan 07, 2022 at 06:40:05AM +0530, 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@....com>
> Cc: Will Deacon <will@...nel.org>
> Cc: Mathieu Poirier <mathieu.poirier@...aro.org>
> Cc: Suzuki Poulose <suzuki.poulose@....com>
> Cc: coresight@...ts.linaro.org
> Cc: linux-doc@...r.kernel.org
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-kernel@...r.kernel.org
> Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>

Acked-by: Catalin Marinas <catalin.marinas@....com>

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