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Date: Wed, 14 Mar 2018 08:23:16 +0100
From: Ingo Molnar <mingo@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Doug Anderson <dianders@chromium.org>,
        Nick Desaulniers <ndesaulniers@google.com>,
        Masahiro Yamada <yamada.masahiro@socionext.com>,
        Mathieu Malaterre <malat@debian.org>,
        Dave Hansen <dave.hansen@intel.com>, Yang Shi <yang.s@alibaba-inc.com>,
        Guenter Roeck <linux@roeck-us.net>,
        Matthias Kaehlcke <mka@chromium.org>,
        Cao jin <caoj.fnst@cn.fujitsu.com>, Arnd Bergmann <arnd@arndb.de>,
        Mark Charlebois <charlebm@gmail.com>,
        Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Michal Marek <michal.lkml@markovi.net>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH v3 2/2] kbuild: Don't mess with the .cache.mk when root
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* Linus Torvalds <torvalds@linux-foundation.org> wrote:

> If Ingo wants to build as root, maybe we could even make him set some
> environment flag to avoid errors.

I only build as root infrequently, but I think PeterZ does it more frequently?

Distro package builds are also often done as root.

I don't mind warnings, etc. - I only objected to the workaround of silently 
turning off a build optimization when root.

Thanks,

	Ingo