linux-kernel - Re: [GIT PULL] x86 cleanups for v5.7

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Message-ID: <20200402134051.GC9352@zn.tnic>
Date:   Thu, 2 Apr 2020 15:40:51 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>,
        Al Viro <viro@...iv.linux.org.uk>,
        Andy Lutomirski <luto@...capital.net>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Michael Matz <matz@...e.de>
Subject: Re: [GIT PULL] x86 cleanups for v5.7

On Wed, Apr 01, 2020 at 05:16:24PM -0700, Linus Torvalds wrote:
> Nobody else has a working compiler to even test that patch, because
> even upstream tip-of-the-day llvm mis-generates code (I have a patch
> that makes it generate ok code, but that one isn't good enough to
> actually go upstream in llvm).

Btw, looking at this:

https://reviews.llvm.org/rG50cac248773

and talking to a gcc guy (CCed), it should be also relatively easy to do
the fallthrough variant in gcc too so you could open a feature request
for that in the gcc bugzilla.

HTH.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette