Re: [PATCH v1 2/3] arm64: mm: Don't remap pgtables for allocate vs populate

[kernel test robot]

Hi Ryan,

kernel test robot noticed the following build errors:

[auto build test ERROR on linus/master]
[also build test ERROR on v6.9-rc1 next-20240326]
[cannot apply to arm64/for-next/core arm-perf/for-next/perf arm/for-next arm/fixes kvmarm/next soc/for-next]
[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/Ryan-Roberts/arm64-mm-Don-t-remap-pgtables-per-cont-pte-pmd-block/20240326-181754
base:   linus/master
patch link:    https://lore.kernel.org/r/20240326101448.3453626-3-ryan.roberts%40arm.com
patch subject: [PATCH v1 2/3] arm64: mm: Don't remap pgtables for allocate vs populate
config: x86_64-rhel-8.3 (https://download.01.org/0day-ci/archive/20240327/202403270906.zFGZ2FXl-lkp@xxxxxxxxx/config)
compiler: gcc-12 (Ubuntu 12.3.0-9ubuntu2) 12.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240327/202403270906.zFGZ2FXl-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202403270906.zFGZ2FXl-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

   In file included from include/linux/mm.h:29,
                    from include/linux/memcontrol.h:21,
                    from include/linux/swap.h:9,
                    from include/linux/suspend.h:5,
                    from arch/x86/kernel/asm-offsets.c:14:
>> include/linux/pgtable.h:87:29: error: redefinition of 'p4d_index'
      87 | static inline unsigned long p4d_index(unsigned long address)
         |                             ^~~~~~~~~
   In file included from arch/x86/include/asm/tlbflush.h:16,
                    from arch/x86/include/asm/uaccess.h:17,
                    from include/linux/uaccess.h:11,
                    from include/linux/sched/task.h:13,
                    from include/linux/sched/signal.h:9,
                    from include/linux/rcuwait.h:6,
                    from include/linux/percpu-rwsem.h:7,
                    from include/linux/fs.h:33,
                    from include/linux/compat.h:17,
                    from arch/x86/include/asm/ia32.h:7,
                    from arch/x86/include/asm/elf.h:10,
                    from include/linux/elf.h:6,
                    from include/linux/module.h:19,
                    from include/crypto/aria.h:22,
                    from arch/x86/kernel/asm-offsets.c:10:
   arch/x86/include/asm/pgtable.h:1134:29: note: previous definition of 'p4d_index' with type 'long unsigned int(long unsigned int)'
    1134 | static inline unsigned long p4d_index(unsigned long address)
         |                             ^~~~~~~~~
   make[3]: *** [scripts/Makefile.build:117: arch/x86/kernel/asm-offsets.s] Error 1
   make[3]: Target 'prepare' not remade because of errors.
   make[2]: *** [Makefile:1197: prepare0] Error 2
   make[2]: Target 'prepare' not remade because of errors.
   make[1]: *** [Makefile:240: __sub-make] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:240: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.


vim +/p4d_index +87 include/linux/pgtable.h

    85	
    86	#ifndef p4d_index
  > 87	static inline unsigned long p4d_index(unsigned long address)
    88	{
    89		return (address >> P4D_SHIFT) & (PTRS_PER_P4D - 1);
    90	}
    91	#define p4d_index p4d_index
    92	#endif
    93	

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