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Date:   Thu, 14 Jan 2021 16:30:45 -0800
From:   Joe Perches <>
To:     Linus Torvalds <>
Cc:     Ard Biesheuvel <>,
        Russell King - ARM Linux admin <>,
        Florian Weimer <>,
        Arnd Bergmann <>,
        "Cc: Android Kernel" <>,
        Theodore Ts'o <>,
        Peter Zijlstra <>,
        Catalin Marinas <>,
        Masahiro Yamada <>,
        Nick Desaulniers <>,
        Linux Kernel Mailing List <>,
        Will Deacon <>,
        linux-arm-kernel <>
Subject: Re: [PATCH] compiler.h: Raise minimum version of GCC to 5.1 for

On Thu, 2021-01-14 at 13:18 -0800, Linus Torvalds wrote:
> On Thu, Jan 14, 2021 at 11:52 AM Joe Perches <> wrote:
> > 
> > Given the upgrade requirement, and how clang version requirements
> > constantly change, how much more difficult would it be for others
> > to use gcc 7.1 or higher now instead of later?
> What was the argument for jumping all the way to gcc-7.1?
> I do think we want to have real reasons we can point to, rather than a
> "just because".

KASAN v5 instead of all the old versions
gcc 7.1 supports fallthrough.

Probably more, but those might be sufficient.

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