linux-kernel - Re: [tip:x86/mm 1/23] arch/x86/mm/init.c:75:6: warning: no previous prototype for function 'x86_has_pat

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Date:   Wed, 20 May 2020 19:19:22 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     Philip Li <philip.li@...el.com>,
        Masahiro Yamada <masahiroy@...nel.org>, lkp <lkp@...el.com>,
        Christoph Hellwig <hch@....de>,
        "kbuild-all@...ts.01.org" <kbuild-all@...ts.01.org>,
        clang-built-linux <clang-built-linux@...glegroups.com>,
        LKML <linux-kernel@...r.kernel.org>,
        "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@...nel.org>,
        Benjamin Thiel <b.thiel@...teo.de>,
        Nathan Chancellor <natechancellor@...il.com>
Subject: Re: [tip:x86/mm 1/23] arch/x86/mm/init.c:75:6: warning: no previous
 prototype for function 'x86_has_pat_wp'

On Tue, May 19, 2020 at 06:07:14PM -0700, Nick Desaulniers wrote:
> It may be time to consider "promoting" some warnings from W=1 to be on
> by default.

That's the end goal with -Wmissing-prototypes for arch/x86/ at least.
We'll turn that on once all current warnings are fixed and won't allow
any more patches with it.

This is where the 0day bot would help with testing this but it really
should say that it is a W=1 build and should tone down the message
frequency as we're still very noisy.

Thx.

-- 
Regards/Gruss,
    Boris.

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