linux-kernel - Re: arm-linux-gnueabi-ld: warning: orphan section `__cpuidle_method_of_table' from `arch/arm/mach-omap2/pm33xx-core.o' being placed in section `__cpuidle_method_of

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Message-ID: <CAK8P3a0NX4bpQUdHBhpo1s2PU465WjAOAPPzifeHuvFGi20NMw@mail.gmail.com>
Date:   Wed, 7 Apr 2021 20:23:34 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     Kees Cook <keescook@...omium.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        kbuild-all@...ts.01.org, LKML <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        kernel test robot <lkp@...el.com>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>
Subject: Re: arm-linux-gnueabi-ld: warning: orphan section `__cpuidle_method_of_table'
 from `arch/arm/mach-omap2/pm33xx-core.o' being placed in section `__cpuidle_method_of_table'

On Wed, Apr 7, 2021 at 8:07 PM Nick Desaulniers <ndesaulniers@...gle.com> wrote:
>
> On Wed, Apr 7, 2021 at 3:52 AM kernel test robot <lkp@...el.com> wrote:
> >
> > Hi Kees,
> >
> > FYI, the error/warning still remains.
> >
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> > head:   2d743660786ec51f5c1fefd5782bbdee7b227db0
> > commit: 5a17850e251a55bba6d65aefbfeacfa9888cd2cd arm/build: Warn on orphan section placement
> > date:   7 months ago
> > config: arm-randconfig-r033-20210407 (attached as .config)
> > compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
> > reproduce (this is a W=1 build):
> >         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> >         chmod +x ~/bin/make.cross
> >         # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5a17850e251a55bba6d65aefbfeacfa9888cd2cd
> >         git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> >         git fetch --no-tags linus master
> >         git checkout 5a17850e251a55bba6d65aefbfeacfa9888cd2cd
> >         # save the attached .config to linux build tree
> >         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm
> >
> > If you fix the issue, kindly add following tag as appropriate
> > Reported-by: kernel test robot <lkp@...el.com>
> >
> > All warnings (new ones prefixed by >>):
> >
> > >> arm-linux-gnueabi-ld: warning: orphan section `__cpuidle_method_of_table' from `arch/arm/mach-omap2/pm33xx-core.o' being placed in section `__cpuidle_method_of_table'
> > >> arm-linux-gnueabi-ld: warning: orphan section `__cpuidle_method_of_table' from `arch/arm/mach-omap2/pm33xx-core.o' being placed in section `__cpuidle_method_of_table'
> > >> arm-linux-gnueabi-ld: warning: orphan section `__cpuidle_method_of_table' from `arch/arm/mach-omap2/pm33xx-core.o' being placed in section `__cpuidle_method_of_table'
>
> Looks like arch/arm/include/asm/cpuidle.h defines
> `CPUIDLE_METHOD_OF_DECLARE` to create a static struct in such a
> section.  Only arch/arm/mach-omap2/pm33xx-core.c uses that macro.

Nick, Kees,

Should I resend my patch, or are you taking care of it?

https://lore.kernel.org/lkml/20201230155506.1085689-1-arnd@kernel.org/T/#u

         Arnd