linux-kernel - Re: [PATCH 4/4] arm64: mm: split linear mapping if BBML2 is not supported on secondary CPUs

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Message-ID: <202507261822.ikaBRFsG-lkp@intel.com>
Date: Sat, 26 Jul 2025 19:10:11 +0800
From: kernel test robot <lkp@...el.com>
To: Yang Shi <yang@...amperecomputing.com>, ryan.roberts@....com,
	will@...nel.org, catalin.marinas@....com, akpm@...ux-foundation.org,
	Miko.Lenczewski@....com, dev.jain@....com,
	scott@...amperecomputing.com, cl@...two.org
Cc: oe-kbuild-all@...ts.linux.dev, yang@...amperecomputing.com,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] arm64: mm: split linear mapping if BBML2 is not
 supported on secondary CPUs

Hi Yang,

kernel test robot noticed the following build warnings:

[auto build test WARNING on next-20250724]
[cannot apply to arm64/for-next/core akpm-mm/mm-everything v6.16-rc7 v6.16-rc6 v6.16-rc5 linus/master v6.16-rc7]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Yang-Shi/arm64-Enable-permission-change-on-arm64-kernel-block-mappings/20250725-061534
base:   next-20250724
patch link:    https://lore.kernel.org/r/20250724221216.1998696-5-yang%40os.amperecomputing.com
patch subject: [PATCH 4/4] arm64: mm: split linear mapping if BBML2 is not supported on secondary CPUs
config: arm64-randconfig-001-20250726 (https://download.01.org/0day-ci/archive/20250726/202507261822.ikaBRFsG-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250726/202507261822.ikaBRFsG-lkp@intel.com/reproduce)

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/202507261822.ikaBRFsG-lkp@intel.com/

All warnings (new ones prefixed by >>):

   arch/arm64/mm/mmu.o: in function `linear_map_split_to_ptes':
   mmu.c:(.init.text+0x23c): relocation truncated to fit: R_AARCH64_LDST32_ABS_LO12_NC against symbol `repaint_done' defined in .data section in arch/arm64/mm/proc.o
>> aarch64-linux-ld: mmu.c:(.init.text+0x23c): warning: one possible cause of this error is that the symbol is being referenced in the indicated code as if it had a larger alignment than was declared where it was defined

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki