linux-arch.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Heiko Carstens <heiko.carstens@de.ibm.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>,
	linux-arch@vger.kernel.org, linux-kbuild@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-arm-kernel@vger.kernel.org,
	Russell King <rmk+kernel@armlinux.org.uk>,
	Andrew Morton <akpm@linux-foundation.org>,
	kernel-build-reports@lists.linaro.org,
	kvmarm@lists.cs.columbia.edu,
	Geert Uytterhoeven <geert@linux-m68k.org>
Subject: Re: [RFC] minimum gcc version for kernel: raise to gcc-4.3 or 4.6?
Date: Tue, 20 Dec 2016 10:59:20 +0100	[thread overview]
Message-ID: <20161220095920.GD4893@osiris> (raw)
Message-ID: <20161220095920.HtozE6c0tJHW_qN3HyaQVbA4M4oCm-E2eqakYFMsU5k@z> (raw)
In-Reply-To: <2778134.jZdhGefl4B@wuerfel>

On Fri, Dec 16, 2016 at 11:00:27PM +0100, Arnd Bergmann wrote:
> On Friday, December 16, 2016 6:00:43 PM CET Sebastian Andrzej Siewior wrote:
> > On 2016-12-16 11:56:21 [+0100], Arnd Bergmann wrote:
> > > The original gcc-4.3 release was in early 2008. If we decide to still
> > > support that, we probably want the first 10 quirks in this series,
> > > while gcc-4.6 (released in 2011) requires none of them.
> > 
> > It this min gcc thingy ARM only?
> 
> This is part of the question that I'm trying to figure out myself.
> 
> Clearly having the same minimum version across all architectures simplifies
> things a lot, because many of the bugs in old versions are architecture
> independent. Then again, some architectures implicitly require a new version
> because an old one never existed (e.g. arm64 or risc-v), while some other
> architectures may require an old version.

FWIW, s390 requires gcc 4.3 or newer since two years already. For older
compilers we enforce a compile error (see arch/s390/kernel/asm-offsets.c).


  parent reply	other threads:[~2016-12-20  9:59 UTC|newest]

Thread overview: 84+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-16 10:56 [RFC] minimum gcc version for kernel: raise to gcc-4.3 or 4.6? Arnd Bergmann
2016-12-16 10:56 ` Arnd Bergmann
2016-12-16 10:56 ` [PATCH 01/13] [HACK] gcc-4.5: avoid link errors for unused function pointers Arnd Bergmann
2016-12-16 10:56   ` Arnd Bergmann
2016-12-16 10:56 ` [PATCH 02/13] KVM: arm: fix gcc-4.5 build Arnd Bergmann
2016-12-16 10:56   ` Arnd Bergmann
2017-01-04 10:38   ` Christoffer Dall
2017-01-04 10:38     ` Christoffer Dall
2016-12-16 10:56 ` [PATCH 03/13] ARM: div64: fix building with gcc-4.5 and lower Arnd Bergmann
2016-12-16 10:56   ` Arnd Bergmann
2016-12-16 10:56 ` [PATCH 04/13] vfio-pci: use 32-bit comparisons for register address for gcc-4.5 Arnd Bergmann
2016-12-16 10:56   ` Arnd Bergmann
2016-12-16 15:30   ` Alex Williamson
2016-12-16 19:50     ` Arnd Bergmann
2016-12-16 10:56 ` [PATCH 05/13] clk: pxa: fix gcc-4.4 build Arnd Bergmann
2016-12-16 10:56   ` Arnd Bergmann
2016-12-16 10:56 ` [PATCH 06/13] ARM: atomic: " Arnd Bergmann
2016-12-16 10:56   ` Arnd Bergmann
2016-12-16 10:56 ` [PATCH 07/13] watchdog: kempld: fix gcc-4.3 build Arnd Bergmann
2016-12-16 10:56   ` Arnd Bergmann
2016-12-16 10:56 ` [PATCH 08/13] arm/arm64: xen: avoid gcc-4.4 warning Arnd Bergmann
2016-12-16 10:56   ` Arnd Bergmann
2016-12-16 10:56 ` [PATCH 09/13] ARM: mark cmpxchg and xchg __always_inline for gcc-4.3 Arnd Bergmann
2016-12-16 10:56   ` Arnd Bergmann
2016-12-16 10:56 ` [PATCH 10/13] asm-generic: mark cmpxchg as " Arnd Bergmann
2016-12-16 10:56   ` Arnd Bergmann
2016-12-16 10:56 ` [PATCH 11/13] fs: fix unsigned enum warning with gcc-4.2 Arnd Bergmann
2016-12-16 10:56   ` Arnd Bergmann
2017-01-03 22:47   ` Brendan Gregg
2017-02-28 21:53     ` Brendan Gregg
2016-12-16 10:56 ` [PATCH 12/13] KVM: arm: avoid binary number literals for gcc-4.2 Arnd Bergmann
2016-12-16 10:56   ` Arnd Bergmann
2017-01-04 10:39   ` Christoffer Dall
2017-01-04 10:39     ` Christoffer Dall
2016-12-16 10:56 ` [PATCH 13/13] ARM: avoid 'Q' asm constraint for gcc-4.1 and earlier Arnd Bergmann
2016-12-16 10:56   ` Arnd Bergmann
2016-12-16 11:14 ` [RFC] minimum gcc version for kernel: raise to gcc-4.3 or 4.6? Arnd Bergmann
2016-12-16 11:14   ` Arnd Bergmann
2017-04-16 19:52   ` Kees Cook
2017-04-20 10:15     ` Arnd Bergmann
2017-04-20 19:52       ` Kees Cook
2017-04-20 19:52         ` Kees Cook
2017-04-21 20:55         ` Arnd Bergmann
2017-04-21 20:55           ` Arnd Bergmann
2017-04-21 21:05           ` Kees Cook
2017-04-21 21:05             ` Kees Cook
2017-04-22  3:10             ` Maciej W. Rozycki
2017-04-22  3:10               ` Maciej W. Rozycki
2017-04-22 15:30               ` Arnd Bergmann
2017-04-22 15:30                 ` Arnd Bergmann
2017-04-23 20:13                 ` Geert Uytterhoeven
2017-04-23 20:13                   ` Geert Uytterhoeven
2017-04-24  9:44                   ` Arnd Bergmann
2017-04-24  9:44                     ` Arnd Bergmann
2017-04-24 10:17                     ` Geert Uytterhoeven
2017-04-24 10:17                       ` Geert Uytterhoeven
2017-04-24 14:13                       ` Arnd Bergmann
2017-04-24 16:53                     ` Maciej W. Rozycki
2017-04-24 17:29                       ` Arnd Bergmann
2017-04-24 18:16                         ` Geert Uytterhoeven
2017-04-24 18:16                           ` Geert Uytterhoeven
2017-04-24 18:30                         ` Maciej W. Rozycki
2017-04-24 18:30                           ` Maciej W. Rozycki
2017-04-24 20:30                           ` Arnd Bergmann
2017-04-24 20:52                             ` Kees Cook
2017-04-25  7:06                               ` Geert Uytterhoeven
2017-04-25  7:06                                 ` Geert Uytterhoeven
2017-04-25  9:22     ` Suzuki K Poulose
2017-04-25  9:22       ` Suzuki K Poulose
2016-12-16 15:54 ` Geert Uytterhoeven
2016-12-16 15:54   ` Geert Uytterhoeven
2016-12-16 19:58   ` Arnd Bergmann
2016-12-16 19:58     ` Arnd Bergmann
2016-12-16 20:34     ` Geert Uytterhoeven
2016-12-16 20:34       ` Geert Uytterhoeven
2016-12-16 17:00 ` Sebastian Andrzej Siewior
2016-12-16 22:00   ` Arnd Bergmann
2016-12-16 22:00     ` Arnd Bergmann
2016-12-17 11:29     ` Sebastian Andrzej Siewior
2016-12-17 11:29       ` Sebastian Andrzej Siewior
2017-01-02 12:23       ` Russell King - ARM Linux
2017-01-02 12:23         ` Russell King - ARM Linux
2016-12-20  9:59     ` Heiko Carstens [this message]
2016-12-20  9:59       ` Heiko Carstens

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20161220095920.GD4893@osiris \
    --to=heiko.carstens@de.ibm.com \
    --cc=akpm@linux-foundation.org \
    --cc=arnd@arndb.de \
    --cc=geert@linux-m68k.org \
    --cc=kernel-build-reports@lists.linaro.org \
    --cc=kvmarm@lists.cs.columbia.edu \
    --cc=linux-arch@vger.kernel.org \
    --cc=linux-arm-kernel@vger.kernel.org \
    --cc=linux-kbuild@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=rmk+kernel@armlinux.org.uk \
    --cc=sebastian@breakpoint.cc \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).