linux-kernel - Re: [PATCH] compiler.h: Raise minimum version of GCC to 5.1 for arm64

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Message-ID: <CAHk-=wiQ_tp8NmKV8PJ-6WMo3dTEZwDo3a0hYjcUFqMdviNTYw@mail.gmail.com>
Date:   Wed, 13 Jan 2021 11:15:09 -0800
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     Catalin Marinas <catalin.marinas@....com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Will Deacon <will@...nel.org>, Arnd Bergmann <arnd@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        "Theodore Ts'o" <tytso@....edu>,
        "Cc: Android Kernel" <kernel-team@...roid.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Florian Weimer <fweimer@...hat.com>
Subject: Re: [PATCH] compiler.h: Raise minimum version of GCC to 5.1 for arm64

On Wed, Jan 13, 2021 at 9:58 AM Masahiro Yamada <masahiroy@...nel.org> wrote:
>
> Maybe, we can raise the minimal version to gcc 5.1
> for all architectures.

It was discussed, but the immediate reason for this thing really does
seem to be specific to just arm64 (ie this is not some generic gcc
stack access bug that just happens to rear its head on arm64 - the
patch to fix this in the gcc bugzilla is very much arm64-only).

            Linus