From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Masahiro Yamada <masahiroy@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Albert Ou <aou@eecs.berkeley.edu>, Arnd Bergmann <arnd@arndb.de>,
Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jonathan Corbet <corbet@lwn.net>,
Linux Documentation List <linux-doc@vger.kernel.org>,
"open list:LINUX FOR POWERPC PA SEMI PWRFICIENT"
<linuxppc-dev@lists.ozlabs.org>,
Palmer Dabbelt <palmer@dabbelt.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Miguel Ojeda <ojeda@kernel.org>,
Paul Mackerras <paulus@samba.org>,
linux-riscv <linux-riscv@lists.infradead.org>,
Will Deacon <will@kernel.org>,
linux-arm Mailing List <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH] Raise the minimum GCC version to 5.2
Date: Tue, 4 May 2021 16:18:41 +0300 [thread overview]
Message-ID: <CAHp75VevBN1AKpZetMfY7tUU0ghjc7_g7Vw=+rPxTfdifqqhFw@mail.gmail.com> (raw)
In-Reply-To: <8b5f1d57-1357-affd-565f-f4826f3ecbdf@csgroup.eu>
On Mon, May 3, 2021 at 9:17 AM Christophe Leroy
<christophe.leroy@csgroup.eu> wrote:
> Le 01/05/2021 à 17:15, Masahiro Yamada a écrit :
> > The current minimum GCC version is 4.9 except ARCH=arm64 requiring
> > GCC 5.1.
> >
> > When we discussed last time, we agreed to raise the minimum GCC version
> > to 5.1 globally. [1]
> >
> > I'd like to propose GCC 5.2 to clean up arch/powerpc/Kconfig as well.
>
> One point I missed when I saw your patch first time, but I realised during the discussion:
>
> Up to 4.9, GCC was numbered with 3 digits, we had 4.8.0, 4.8.1, ... 4.8.5, 4.9.0, 4.9.1, .... 4.9.4
>
> Then starting at 5, GCC switched to a 2 digits scheme, with 5.0, 5.1, 5.2, ... 5.5
>
> So, that is not GCC 5.1 or 5.2 that you should target, but only GCC 5.
> Then it is up to the user to use the latest available version of GCC 5, which is 5.5 at the time
> begin, just like the user would have selected 4.9.4 when 4.9 was the minimum GCC version.
And we may end up in the case when gcc 5.x will be more buggy than
v4.9.y (as once proved by nice detective story where compiler bug
produces a file system corruption).
--
With Best Regards,
Andy Shevchenko
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-05-04 13:20 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-01 15:15 [PATCH] Raise the minimum GCC version to 5.2 Masahiro Yamada
2021-05-01 15:52 ` Miguel Ojeda
2021-05-01 17:38 ` Christophe Leroy
2021-05-02 2:41 ` Joe Perches
2021-05-02 18:30 ` Segher Boessenkool
2021-05-02 20:00 ` Joe Perches
2021-05-02 20:32 ` Segher Boessenkool
2021-05-02 21:05 ` Ali Kaasinen
2021-05-02 21:08 ` Linus Torvalds
2021-05-02 22:30 ` Matthew Wilcox
2021-05-03 7:34 ` Alexander Dahl
2021-05-03 8:54 ` Joe Perches
2021-05-03 9:25 ` Arnd Bergmann
2021-05-03 12:20 ` David Laight
2021-05-03 13:10 ` Miguel Ojeda
2021-05-04 5:30 ` Alexander Dahl
2021-05-04 6:33 ` Christophe Leroy
2021-05-04 12:07 ` Arnd Bergmann
2021-05-04 13:25 ` Andy Shevchenko
2021-05-03 11:35 ` Arnd Bergmann
2021-05-03 9:49 ` Kirill A. Shutemov
2021-05-02 21:23 ` Joe Perches
2021-05-03 0:44 ` Segher Boessenkool
2021-05-03 9:57 ` Arnd Bergmann
2021-05-04 7:56 ` Ben Dooks
2021-05-04 8:38 ` Miguel Ojeda
2021-05-04 9:22 ` Michal Suchánek
2021-05-04 12:09 ` Miguel Ojeda
2021-05-04 12:17 ` Michal Suchánek
2021-05-04 12:26 ` Christophe Leroy
2021-05-02 18:37 ` Segher Boessenkool
2021-05-03 6:16 ` Christophe Leroy
2021-05-04 2:13 ` Masahiro Yamada
2021-05-04 13:18 ` Andy Shevchenko [this message]
2021-05-03 12:27 ` David Sterba
2021-05-15 7:14 ` Pavel Machek
2021-05-15 7:27 ` Joe Perches
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