linux-kernel - Re: [tip:x86/seves] BUILD SUCCESS WITH WARNING e6eb15c9ba3165698488ae5c34920eea20eaa38e

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Message-ID: <20200916184804.GS2643@zn.tnic>
Date:   Wed, 16 Sep 2020 20:48:04 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     Arvind Sankar <nivedita@...m.mit.edu>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Rong Chen <rong.a.chen@...el.com>,
        kernel test robot <lkp@...el.com>,
        "Li, Philip" <philip.li@...el.com>, x86-ml <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        clang-built-linux <clang-built-linux@...glegroups.com>,
        Marco Elver <elver@...gle.com>
Subject: Re: [tip:x86/seves] BUILD SUCCESS WITH WARNING
 e6eb15c9ba3165698488ae5c34920eea20eaa38e

On Wed, Sep 16, 2020 at 11:28:26AM -0700, Nick Desaulniers wrote:
> pt. 3 https://nickdesaulniers.github.io/blog/2014/04/18/lets-write-some-x86-64/

/me adds to the read list.

> ...2014, jesus...
> 
> "But you never can tell exactly what the compiler is doing. It doesn’t
> always come out the way you want. Like a dusty pane or warped mirror."

Fun quote that. The rest is also very entertaining...

> Seems I'd learn more about that than I'd could have ever envisioned...

Thank <Deity> there's inline asm. This is also why we don't trust
compilers, not even when using builtins. :-P

-- 
Regards/Gruss,
    Boris.

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