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From: Ard Biesheuvel <ardb@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ingo Molnar <mingo@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Borislav Petkov <bp@alien8.de>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	linux-efi <linux-efi@vger.kernel.org>
Subject: Re: [GIT PULL] EFI fixes
Date: Sun, 28 Jun 2020 21:26:45 +0200
Message-ID: <CAMj1kXFfLb44ifgNqBR9WM5T6sT6ekqS8cYdvbuhvs5mqcD+tw@mail.gmail.com> (raw)
In-Reply-To: <CAHk-=wgD+q+oDdtukYC74_cDX5i0Ynf0GLhuNe2Faaokejj6fQ@mail.gmail.com>

On Sun, 28 Jun 2020 at 20:57, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
>
> On Sun, Jun 28, 2020 at 11:26 AM Ingo Molnar <mingo@kernel.org> wrote:
> >
> > - Fix build regression on v4.8 and older
>
> Interesting.
>
> It's perhaps yet another reason to just skip gcc-4.8 too, since
> apparently 4.9 works.
>

+1

> gcc-4.9 really has a lot of advantages. It's where (I think) gcc
> basically supports all C11 things, including _Generic() but also
> __auto_type.
>
> So if we just say that we only care about gcc-4.9 upwards, it frees us
> to clean up some (really) old constructions where we've been using
> macros with sizeof and/or typeof, and make the code potentially rather
> more readable and often more compact.
>
> Yeah, I know we _just_ made the minimum compiler version be 4.8, but I
> do get the feeling that we should just have bitten the bullet and gone
> all the way to 4.9.
>
> Arnd, what was the reason for 4.8 support? I'm assuming there's some
> sad unfortunate distro that still uses that ancient compiler..
>

Arnd may know more, but I know one of the reasons 4.8 is significant
is because RHEL 7 uses it, which will go EOL in 2024.

> Ok, ok, 4.9 isn't exactly new either (4.9.0 released May 2014, and
> final 4.9 release was 2016), but 4.9 really from a feature angle is a
> much saner thing than 4.8.
>
> Afaik, the main "interesting" part of gcc-4.8 was that it was when gcc
> switched over to be built as C++. That's perhaps a huge milestone for
> gcc itself, but not necessarily for the users..
>
> Arnd? You're the one who tends to keep track of these things..
>
>              Linus

  reply index

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-28 18:26 Ingo Molnar
2020-06-28 18:57 ` Linus Torvalds
2020-06-28 19:26   ` Ard Biesheuvel [this message]
2020-06-28 19:34     ` Borislav Petkov
2020-07-08 16:20   ` Peter Zijlstra
2020-07-08 18:00     ` Linus Torvalds
2020-07-09  8:28       ` Peter Zijlstra
2020-07-09  9:30       ` Arnd Bergmann
2020-07-09 10:34         ` Kirill A. Shutemov
2020-07-10 10:09           ` Arnd Bergmann
2020-07-10 11:00             ` Kirill A. Shutemov
2020-07-10 11:17               ` Lukas Wunner
2020-06-28 22:05 ` pr-tracker-bot
  -- strict thread matches above, loose matches on Subject: below --
2021-06-02 17:44 Ingo Molnar
2021-06-02 19:36 ` pr-tracker-bot
2021-03-21 10:47 Ingo Molnar
2021-03-21 18:45 ` pr-tracker-bot
2020-07-25 10:32 Ingo Molnar
2020-07-25 22:30 ` pr-tracker-bot
2020-04-15  9:03 Ingo Molnar
2020-04-16  0:45 ` pr-tracker-bot
2020-03-02  7:10 Ingo Molnar
2020-03-03 23:35 ` pr-tracker-bot
2020-01-18 17:16 Ingo Molnar
2020-01-18 21:05 ` pr-tracker-bot
2019-12-17 11:09 Ingo Molnar
2019-12-17 19:20 ` pr-tracker-bot
2019-11-01 17:43 Ingo Molnar
2019-11-01 19:10 ` pr-tracker-bot
2019-10-12 13:01 Ingo Molnar
2019-10-12 22:35 ` pr-tracker-bot
2019-06-29  8:23 Ingo Molnar
2019-06-29 11:45 ` pr-tracker-bot
2019-06-02 17:35 Ingo Molnar
2019-06-02 18:15 ` pr-tracker-bot
2018-12-09 21:59 Ingo Molnar
2018-12-09 23:45 ` pr-tracker-bot
2018-11-17 10:51 Ingo Molnar
2018-11-18 20:05 ` pr-tracker-bot
2017-12-06 22:05 Ingo Molnar
2017-10-27 19:10 Ingo Molnar
2017-06-02  6:46 Ingo Molnar
2017-03-07 20:21 Ingo Molnar
2017-02-02 20:54 Ingo Molnar
2017-01-15  9:53 Ingo Molnar
2016-11-14  7:50 Ingo Molnar
2016-10-22 10:36 Ingo Molnar
2016-09-13 18:08 Ingo Molnar
2016-08-12 19:17 Ingo Molnar
2016-06-10 12:36 Ingo Molnar
2016-05-06 11:07 Ingo Molnar
2015-10-03 10:11 Ingo Molnar

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