[PATCH RESEND 3/3] arm64: Add PUD THP support for DAX and pfnmap

[kernel test robot]

Hi Jinjiang,

kernel test robot noticed the following build errors:

[auto build test ERROR on akpm-mm/mm-everything]
[also build test ERROR on arm64/for-next/core powerpc/next powerpc/fixes tip/x86/core tip/x86/mm linus/master v7.3 next-20261027]
[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/Jinjiang-Tu/mm-define-generic-pudp_invalidate-implementation/20261028-201402
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20261028121404.853944-4-tujinjiang%40huawei.com
patch subject: [PATCH RESEND 3/3] arm64: Add PUD THP support for DAX and pfnmap
config: arm64-allnoconfig (https://download.01.org/0day-ci/archive/20261029/202610291125.dNGHD2Vr-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 16.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261029/202610291125.dNGHD2Vr-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 at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202610291125.dNGHD2Vr-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from arch/arm64/include/asm/io.h:13,
                    from include/linux/io.h:12,
                    from include/linux/irq.h:20,
                    from include/asm-generic/hardirq.h:17,
                    from arch/arm64/include/asm/hardirq.h:17,
                    from include/linux/hardirq.h:11,
                    from include/linux/interrupt.h:11,
                    from include/linux/trace_recursion.h:5,
                    from include/linux/ftrace.h:10,
                    from arch/arm64/kernel/asm-offsets.c:13:
>> include/linux/pgtable.h:2098:19: error: redefinition of 'pud_trans_huge'
    2098 | static inline int pud_trans_huge(pud_t pud)
         |                   ^~~~~~~~~~~~~~
   In file included from include/linux/pgtable.h:6:
   arch/arm64/include/asm/pgtable.h:842:19: note: previous definition of 'pud_trans_huge' with type 'int(pud_t)'
     842 | static inline int pud_trans_huge(pud_t pud)
         |                   ^~~~~~~~~~~~~~
   make[3]: *** [scripts/Makefile.build:185: arch/arm64/kernel/asm-offsets.s] Error 1
   make[3]: Target 'prepare' not remade because of errors.
   make[2]: *** [Makefile:1416: prepare0] Error 2
   make[2]: Target 'prepare' not remade because of errors.
   make[1]: *** [Makefile:248: __sub-make] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:248: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.


vim +/pud_trans_huge +2098 include/linux/pgtable.h

1501899a898dfb5 include/asm-generic/pgtable.h Dan Williams   2017-11-29  2095  
a00cc7d9dd93d66 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24  2096  #if !defined(CONFIG_TRANSPARENT_HUGEPAGE) || \
bcd0dea5f4fb3d0 include/linux/pgtable.h       Liu Shixin     2022-08-29  2097  	!defined(CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD)
a00cc7d9dd93d66 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 @2098  static inline int pud_trans_huge(pud_t pud)
a00cc7d9dd93d66 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24  2099  {
a00cc7d9dd93d66 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24  2100  	return 0;
a00cc7d9dd93d66 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24  2101  }
a00cc7d9dd93d66 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24  2102  #endif
a00cc7d9dd93d66 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24  2103  

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