linux-kernel - Re: [PATCH] iommu/arm-smmu: Warn once when the perfetcher errata patch fails to apply

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Message-Id: <166851283020.1266596.8585820030047050712.b4-ty@kernel.org>
Date:   Tue, 15 Nov 2022 18:32:54 +0000
From:   Will Deacon <will@...nel.org>
To:     Chen Lin <chen45464546@....com>
Cc:     catalin.marinas@....com, kernel-team@...roid.com,
        Will Deacon <will@...nel.org>, robin.murphy@....com,
        treding@...dia.com, joro@...tes.org,
        linux-arm-kernel@...ts.infradead.org, iommu@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] iommu/arm-smmu: Warn once when the perfetcher errata patch fails to apply

On Fri, 4 Nov 2022 06:21:21 +0800, Chen Lin wrote:
> Default reset value of secure banked register SMMU_sACR.cache_lock is 1.
> If it is not been set to 0 by secure software(eg: atf), the non-secure
> linux cannot clear ARM_MMU500_ACTLR_CPRE bit. In this situation,
> the prefetcher errata is not applied successfully, warn once.
> 
> 

Applied to will (for-joerg/arm-smmu/updates), thanks!

[1/1] iommu/arm-smmu: Warn once when the perfetcher errata patch fails to apply
      https://git.kernel.org/will/c/f87f6e5b4539

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
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