linux-kernel - Re: [PATCH v8 30/43] arm64: kasan: Allow enabling in-kernel MTE

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Message-ID: <1ef3f645-8b91-cfcf-811e-85123fea90fa@arm.com>
Date:   Thu, 5 Nov 2020 11:42:23 +0000
From:   Vincenzo Frascino <vincenzo.frascino@....com>
To:     Andrey Konovalov <andreyknvl@...gle.com>
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Alexander Potapenko <glider@...gle.com>,
        Marco Elver <elver@...gle.com>,
        Evgenii Stepanov <eugenis@...gle.com>,
        Branislav Rankov <Branislav.Rankov@....com>,
        Kevin Brodsky <kevin.brodsky@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        kasan-dev <kasan-dev@...glegroups.com>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v8 30/43] arm64: kasan: Allow enabling in-kernel MTE

On 11/5/20 11:35 AM, Andrey Konovalov wrote:
> This will work. Any preference on the name of this function?
>

I called it in my current iteration mte_enable(), and calling it from
cpu_enable_mte().

> Alternatively we can rename mte_init_tags() to something else and let
> it handle both RRND and sync/async.

This is an option but then you need to change the name of kasan_init_tags and
the init_tags indirection name as well. I would go for the simpler and just
splitting the function as per above.

What do you think?

-- 
Regards,
Vincenzo