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Date:   Wed, 28 Jul 2021 11:05:45 +0100
Message-ID: <87zgu6da86.wl-maz@kernel.org>
From:   Marc Zyngier <maz@kernel.org>
To:     Suzuki K Poulose <suzuki.poulose@arm.com>
Cc:     yee.lee@mediatek.com, linux-kernel@vger.kernel.org,
        nicholas.Tang@mediatek.com, Kuan-Ying.lee@mediatek.com,
        chinwen.chang@mediatek.com,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        David Brazdil <dbrazdil@google.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Ionela Voinescu <ionela.voinescu@arm.com>,
        Amit Daniel Kachhap <amit.kachhap@arm.com>,
        Quentin Perret <qperret@google.com>,
        Andrew Scull <ascull@google.com>,
        James Morse <james.morse@arm.com>,
        Fuad Tabba <tabba@google.com>,
        "moderated list:ARM64 PORT (AARCH64 ARCHITECTURE)" 
        <linux-arm-kernel@lists.infradead.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@lists.infradead.org>
Subject: Re: [PATCH 1/1] arm64/cpufeature: Add option to disable mte support
In-Reply-To: <88cded87-bc06-4aeb-4996-76a5faa58afe@arm.com>
References: <20210728094302.9949-1-yee.lee@mediatek.com>
        <20210728094302.9949-2-yee.lee@mediatek.com>
        <88cded87-bc06-4aeb-4996-76a5faa58afe@arm.com>
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On Wed, 28 Jul 2021 10:59:24 +0100,
Suzuki K Poulose <suzuki.poulose@arm.com> wrote:
> 
> On 28/07/2021 10:42, yee.lee@mediatek.com wrote:
> > From: Yee Lee <yee.lee@mediatek.com>
> > 
> > Add a static key to exapnd the logic of system_supports_mte().
> > This function controls mte enablement in both EL1 and EL0.
> > 
> > The static key, "arm64_mte_support" is default true and can
> > be disabled via the early_param.
> 
> Please could we use the id-reg override mechanism and give it
> an alias ?
> 
> See :
> 
> arch/arm64/kernel/idreg-override.c
> 
> And could add something along the lines of :
> 
> arm64.nomte

Damn, you beat me to it! :D

	M.

-- 
Without deviation from the norm, progress is not possible.