linux-kernel - Re: [PATCH] mm/memblock: discard .text/.data if CONFIG_ARCH_KEEP

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Date: Wed, 8 May 2024 11:06:45 +0800
From: Yujie Liu <yujie.liu@...el.com>
To: Wei Yang <richard.weiyang@...il.com>
CC: kernel test robot <lkp@...el.com>, <arnd@...db.de>, <rppt@...nel.org>,
	<oe-kbuild-all@...ts.linux.dev>, <linux-arch@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>
Subject: Re: [PATCH] mm/memblock: discard .text/.data if
 CONFIG_ARCH_KEEP_MEMBLOCK not set

On Tue, May 07, 2024 at 08:43:50AM +0000, Wei Yang wrote:
> On Tue, May 07, 2024 at 01:13:05PM +0800, kernel test robot wrote:
> >Hi Wei,
> >
> >kernel test robot noticed the following build warnings:
> >
> >[auto build test WARNING on akpm-mm/mm-everything]
> >
> >url:    https://github.com/intel-lab-lkp/linux/commits/Wei-Yang/mm-memblock-discard-text-data-if-CONFIG_ARCH_KEEP_MEMBLOCK-not-set/20240506-092345
> >base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
> >patch link:    https://lore.kernel.org/r/20240506012104.10864-1-richard.weiyang%40gmail.com
> >patch subject: [PATCH] mm/memblock: discard .text/.data if CONFIG_ARCH_KEEP_MEMBLOCK not set
> >config: powerpc-allnoconfig
> >compiler: powerpc-linux-gcc (GCC) 13.2.0
> >reproduce (this is a W=1 build):
> >
> >If you fix the issue in a separate patch/commit (i.e. not just a new version of
> >the same patch/commit), kindly add following tags
> >| Reported-by: kernel test robot <lkp@...el.com>
> >| Closes: https://lore.kernel.org/oe-kbuild-all/202405071200.YgYuuCBu-lkp@intel.com/
> >
> >All warnings (new ones prefixed by >>):
> >
> >>> powerpc-linux-ld: warning: orphan section `.mbinit.text' from `mm/memblock.o' being placed in section `.mbinit.text'
> >>> powerpc-linux-ld: warning: orphan section `.mbinit.text' from `mm/memblock.o' being placed in section `.mbinit.text'
> >>> powerpc-linux-ld: warning: orphan section `.mbinit.text' from `mm/memblock.o' being placed in section `.mbinit.text'
> >
> >-- 
> >0-DAY CI Kernel Test Service
> >https://github.com/intel/lkp-tests/wiki
> 
> >reproduce (this is a W=1 build):
> >        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
> >        git remote add akpm-mm https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git
> >        git fetch akpm-mm mm-everything
> >        git checkout akpm-mm/mm-everything
> >        b4 shazam https://lore.kernel.org/r/20240506012104.10864-1-richard.weiyang@gmail.com
> >        # save the config file
> >        mkdir build_dir && cp config build_dir/.config
> >        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-13.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
> >        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-13.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash
> 
> Can I reproduce this on x86? I don't have a powerpc machine.

The above steps are cross compiling for powerpc target on x86
machine, so you can just follow the steps to reproduce on x86.

Thanks,
Yujie