linux-kernel - Re: [PATCH v2] arm64: document the boot requirements for MTE

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Message-Id: <165090359492.2745002.14281951356771675020.b4-ty@arm.com>
Date:   Mon, 25 Apr 2022 17:19:58 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     Mark Brown <broonie@...nel.org>,
        Peter Collingbourne <pcc@...gle.com>,
        Jonathan Corbet <corbet@....net>, Will Deacon <will@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2] arm64: document the boot requirements for MTE

On Fri, 22 Apr 2022 13:29:12 -0700, Peter Collingbourne wrote:
> When booting the kernel we access system registers such as GCR_EL1
> if MTE is supported. These accesses are defined to trap to EL3 if
> SCR_EL3.ATA is disabled. Furthermore, tag accesses will not behave
> as expected if SCR_EL3.ATA is not set, or if HCR_EL2.ATA is not set
> and we were booted at EL1. Therefore, require that these bits are
> enabled when appropriate.
> 
> [...]

Applied to arm64 (for-next/misc), thanks!

[1/1] arm64: document the boot requirements for MTE
      https://git.kernel.org/arm64/c/b6ba1a89f73f

-- 
Catalin