Re: [PATCH v4 01/11] compiler/gcc: Raise minimum GCC version for kernel builds to 4.8
From: Masahiro Yamada
Date: Tue Apr 21 2020 - 13:16:38 EST
On Wed, Apr 22, 2020 at 12:15 AM Will Deacon <will@xxxxxxxxxx> wrote:
>
> It is very rare to see versions of GCC prior to 4.8 being used to build
> the mainline kernel. These old compilers are also know to have codegen
"know" -> "known"
> issues which can lead to silent miscompilation:
>
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145
>
> Raise the minimum GCC version for kernel build to 4.8 and remove some
> tautological Kconfig dependencies as a consequence.
>
> Cc: Masahiro Yamada <masahiroy@xxxxxxxxxx>
Maybe you can also clean up mm/migrate.c
because GCC_VERSION >= 40700 is always met.
It is up to you if you want to send v5.
Please replace CC with
Reviewed-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
Thank you!
> Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
> Reviewed-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
> Signed-off-by: Will Deacon <will@xxxxxxxxxx>
> ---
--
Best Regards
Masahiro Yamada