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From: Linus Torvalds <torvalds@linux-foundation.org>
To: Ingo Molnar <mingo@kernel.org>, Matthias Kaehlcke <mka@chromium.org>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [GIT PULL] x86/build changes for v4.17
Date: Mon, 2 Apr 2018 14:44:48 -0700	[thread overview]
Message-ID: <CA+55aFzV8L-uv9706ryJ2mP9VGBuzqFVPu1cgYY+sZAtDAroqg@mail.gmail.com> (raw)
In-Reply-To: <20180402095033.nfzcrmxvpm46dhbl@gmail.com>

On Mon, Apr 2, 2018 at 2:50 AM, Ingo Molnar <mingo@kernel.org> wrote:
>
> The biggest change is the forcing of asm-goto support on x86, which effectively
> increases the GCC minimum supported version to gcc-4.5 (on x86).

So my biggest worry isn't gcc-4.5 (anybody who hasn't updated deserves
to be forced, or can stay with old kernels).

No, my biggest worry is clang. What's the status there?

I've pulled this, and honestly, the disaster with
-fmerge-all-constants makes me think that clang isn't that good a
compiler choice anyway, but it's sad if this undoes a lot of clang
work just because of the worries about Spectre and mis-speculated
branches.

             Linus

  reply	other threads:[~2018-04-02 21:44 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-02  9:50 [GIT PULL] x86/build changes for v4.17 Ingo Molnar
2018-04-02 21:44 ` Linus Torvalds [this message]
2018-04-02 22:38   ` Matthias Kaehlcke
2018-04-03  1:26     ` Matthias Kaehlcke
2018-04-03  8:59   ` Peter Zijlstra
2018-04-03  9:51     ` Ingo Molnar
2018-04-03 12:09       ` Peter Zijlstra
2018-04-03 18:06       ` Matthias Kaehlcke
2018-04-03 21:58         ` Nick Desaulniers
2018-04-04  9:19           ` Peter Zijlstra
2018-04-04  9:38           ` Greg KH
2018-04-04 16:49             ` Nick Desaulniers
2018-04-04 17:13               ` Linus Torvalds
2018-04-04 17:46                 ` Nick Desaulniers
2018-04-04 23:10                 ` Nick Desaulniers
2018-04-04 16:53             ` Nick Desaulniers
2018-04-04 16:59               ` Greg KH
2018-04-04 19:26                 ` James Y Knight
2018-04-04 19:42                   ` Linus Torvalds
2018-04-04 22:21                     ` James Y Knight
2018-04-04 22:29                       ` Linus Torvalds
2018-04-05  7:08                       ` Peter Zijlstra
2018-04-05 16:21                         ` James Y Knight
2018-04-04 19:32               ` Josh Poimboeuf
2018-06-07 19:23                 ` Nick Desaulniers
2018-06-07 20:11                   ` Greg KH
2018-04-04  9:30         ` Peter Zijlstra
2018-04-04 19:17           ` Matthias Kaehlcke
2018-04-04 20:33             ` Arnd Bergmann
2018-04-04 20:58               ` Matthias Kaehlcke
2018-04-04 21:11                 ` Arnd Bergmann
2018-04-04 21:46                   ` Matthias Kaehlcke
2018-04-04 21:59                     ` Linus Torvalds
2018-04-04 22:17                       ` Matthias Kaehlcke
2018-04-04 22:39                         ` Linus Torvalds
2018-04-04 23:31                           ` Matthias Kaehlcke
2018-04-05  0:05                             ` Linus Torvalds
2018-04-05  0:20                               ` Kees Cook
2018-04-05  7:24                               ` Peter Zijlstra
2018-04-05  8:04                                 ` Ingo Molnar
2018-04-05  8:24                                   ` Peter Zijlstra
2018-04-05 16:43                                 ` Linus Torvalds
2018-04-05  7:20                             ` Peter Zijlstra
2018-04-05 17:46                               ` James Y Knight
2018-04-05 18:06                                 ` Linus Torvalds
2018-04-05 20:51                                   ` James Y Knight
2018-04-05 21:13                                     ` Linus Torvalds
2018-04-05 22:51                                       ` James Y Knight
2018-04-06  2:02                                         ` Linus Torvalds
2018-04-05 17:47                               ` James Y Knight
2018-04-04 23:04             ` Nick Desaulniers
2018-04-03 17:36     ` Linus Torvalds

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