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Subject: Re: [PATCH 1/1] arm64/cpufeature: Add option to disable mte support
To:     yee.lee@mediatek.com, linux-kernel@vger.kernel.org
Cc:     nicholas.Tang@mediatek.com, Kuan-Ying.lee@mediatek.com,
        chinwen.chang@mediatek.com,
        Catalin Marinas <catalin.marinas@arm.com>,
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        Mark Rutland <mark.rutland@arm.com>,
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        Andrew Scull <ascull@google.com>,
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References: <20210728094302.9949-1-yee.lee@mediatek.com>
 <20210728094302.9949-2-yee.lee@mediatek.com>
From:   Suzuki K Poulose <suzuki.poulose@arm.com>
Message-ID: <88cded87-bc06-4aeb-4996-76a5faa58afe@arm.com>
Date:   Wed, 28 Jul 2021 10:59:24 +0100
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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


Cheers
Suzuki