linux-kernel - Re: [PATCH 02/11] kasan: docs: update overview section

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Message-ID: <CAAeHK+xHeGQ8FSddfFpLrq+5YHoRZ+5KZr2zB+fzCssSbE_=bg@mail.gmail.com>
Date:   Fri, 12 Mar 2021 14:51:56 +0100
From:   Andrey Konovalov <andreyknvl@...gle.com>
To:     Marco Elver <elver@...gle.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Alexander Potapenko <glider@...gle.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        kasan-dev <kasan-dev@...glegroups.com>,
        Linux Memory Management List <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 02/11] kasan: docs: update overview section

On Fri, Mar 12, 2021 at 11:18 AM Marco Elver <elver@...gle.com> wrote:
>
> > -Currently generic KASAN is supported for the x86_64, arm, arm64, xtensa, s390
> > +The hardware KASAN mode (#3) relies on hardware to perform the checks but
> > +still requires a compiler version that supports memory tagging instructions.
> > +This mode is supported in Clang 11+.
>
> Doesn't HW_TAGS mode work with GCC as well? While the sentence doesn't
> say "exclusively", the mention of Clang 11+ makes me think it's only
> Clang.

I never tried it with GCC until just now. But looks like it works.
Will add GCC here, thanks!