linux-kernel - Re: {standard input}:924: Error: unrecognized opcode: `eieio'

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Date:   Mon, 24 Apr 2023 09:49:07 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Pali Rohár <pali@...nel.org>
Cc:     kernel test robot <lkp@...el.com>, oe-kbuild-all@...ts.linux.dev,
        linux-kernel@...r.kernel.org,
        Michael Ellerman <mpe@...erman.id.au>,
        Christophe Leroy <christophe.leroy@...roup.eu>
Subject: Re: {standard input}:924: Error: unrecognized opcode: `eieio'

Hi Pali,

On Sat, Apr 22, 2023 at 4:03 PM Pali Rohár <pali@...nel.org> wrote:
> On Saturday 22 April 2023 21:53:23 kernel test robot wrote:
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> > head:   8e41e0a575664d26bb87e012c39435c4c3914ed9
> > commit: ff7c76f66d8bad4e694c264c789249e1d3a8205d powerpc/boot: Don't always pass -mcpu=powerpc when building 32-bit uImage
> > date:   3 months ago
> > config: powerpc-buildonly-randconfig-r006-20230422 (https://download.01.org/0day-ci/archive/20230422/202304222120.WcBMaHXo-lkp@intel.com/config)
> > compiler: powerpc-linux-gcc (GCC) 12.1.0
> > 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=ff7c76f66d8bad4e694c264c789249e1d3a8205d
> >         git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> >         git fetch --no-tags linus master
> >         git checkout ff7c76f66d8bad4e694c264c789249e1d3a8205d
> >         # save the config file
> >         mkdir build_dir && cp config build_dir/.config
> >         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
> >         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash
> >
> > If you fix the issue, kindly add following tag where applicable
> > | Reported-by: kernel test robot <lkp@...el.com>
> > | Link: https://lore.kernel.org/oe-kbuild-all/202304222120.WcBMaHXo-lkp@intel.com/
> >
> > All errors (new ones prefixed by >>):
> >
> >    {standard input}: Assembler messages:
> > >> {standard input}:924: Error: unrecognized opcode: `eieio'
> >    {standard input}:1094: Error: unrecognized opcode: `eieio'
> >
> > --
> > 0-DAY CI Kernel Test Service
> > https://github.com/intel/lkp-tests
>
> Hello! What is that? In this error report there is no compile log, nor
> any file / line. And "Link:" line from above error report does not work.
>
> Intel, can you look at your robot? This looks some bug in error reporting.

Looks fine to me: this is not a compile problem, but an assembler problem.
Presumably this is when building a kernel for a PPC platform that does
not support the eieio instruction?

The Link: works fine for me, sometimes you just have to be a little bit
patient for the archiver to catch up...

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds