linux-kernel - Re: [PATCH v2 2/2] kbuild: link lib-y objects to vmlinux forcibly when CONFIG

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Date:   Thu, 12 Mar 2020 09:39:43 +0100
From:   Thomas Bogendoerfer <tsbogend@...ha.franken.de>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     linux-mips@...r.kernel.org, Paul Burton <paulburton@...nel.org>,
        kbuild-all@...ts.01.org,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        "sparclinux@...r.kernel.org, David S . Miller" <davem@...emloft.net>,
        clang-built-linux <clang-built-linux@...glegroups.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Ilie Halip <ilie.halip@...il.com>,
        Nathan Chancellor <natechancellor@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        kbuild test robot <lkp@...el.com>
Subject: Re: [PATCH v2 2/2] kbuild: link lib-y objects to vmlinux forcibly
 when CONFIG_MODULES=y

On Thu, Mar 12, 2020 at 03:12:28PM +0900, Masahiro Yamada wrote:
> I got the following report from 0-day bot.
> Please advise me how to fix it.
> 
> 
> I am not sure how multi-platform works in MIPS.
> 
> The cavium-octeon platform has its own implementation
> of various functions.
> 
> So, vmlinux links different library routines
> depending on whether CONFIG_CAVIUM_OCTEON_SOC, correct?

for cavium memcpy is directly linked in via octeon-memcpy.o, while for
every other platform it's coming from lib/lib.a(memcpy.o).

What have you changed, that this doesn't work anymore ?

Thomas.

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