Re: [RFC v1 2/2] powerpc/64s: Add support for huge pfnmaps

[kernel test robot <lkp@intel.com>]

Hi Ritesh,

[This is a private test report for your RFC patch.]
kernel test robot noticed the following build errors:

[auto build test ERROR on linus/master]
[also build test ERROR on v7.0-rc1 next-20260226]
[cannot apply to powerpc/next powerpc/fixes awilliam-vfio/next awilliam-vfio/for-linus riteshharjani/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/Ritesh-Harjani-IBM/powerpc-64s-Add-support-for-huge-pfnmaps/20260227-141845
base:   linus/master
patch link:    https://lore.kernel.org/r/d159058a45ac5e225f2e64cc7c8bbbd1583e51f3.1772170860.git.ritesh.list%40gmail.com
patch subject: [RFC v1 2/2] powerpc/64s: Add support for huge pfnmaps
config: powerpc-allnoconfig (https://download.01.org/0day-ci/archive/20260227/202602271705.lJ7R2osL-lkp@intel.com/config)
compiler: powerpc-linux-gcc (GCC) 15.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260227/202602271705.lJ7R2osL-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202602271705.lJ7R2osL-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from include/linux/pgtable.h:6,
                    from arch/powerpc/include/asm/kup.h:43,
                    from arch/powerpc/include/asm/uaccess.h:10,
                    from include/linux/uaccess.h:13,
                    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/super_types.h:13,
                    from include/linux/fs/super.h:5,
                    from include/linux/fs.h:5,
                    from include/linux/compat.h:17,
                    from arch/powerpc/kernel/asm-offsets.c:13:
   arch/powerpc/include/asm/pgtable.h: In function 'pmd_pgprot':
>> arch/powerpc/include/asm/pgtable.h:69:27: error: implicit declaration of function 'pmd_pte'; did you mean 'pfn_pte'? [-Wimplicit-function-declaration]
      69 |         return pte_pgprot(pmd_pte(pmd));
         |                           ^~~~~~~
         |                           pfn_pte
   arch/powerpc/include/asm/pgtable.h: In function 'pud_pgprot':
>> arch/powerpc/include/asm/pgtable.h:75:27: error: implicit declaration of function 'pud_pte'; did you mean 'pfn_pte'? [-Wimplicit-function-declaration]
      75 |         return pte_pgprot(pud_pte(pud));
         |                           ^~~~~~~
         |                           pfn_pte
   make[3]: *** [scripts/Makefile.build:184: arch/powerpc/kernel/asm-offsets.s] Error 1
   make[3]: Target 'prepare' not remade because of errors.
   make[2]: *** [Makefile:1333: 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 +69 arch/powerpc/include/asm/pgtable.h

    65	
    66	#define pmd_pgprot pmd_pgprot
    67	static inline pgprot_t pmd_pgprot(pmd_t pmd)
    68	{
  > 69		return pte_pgprot(pmd_pte(pmd));
    70	}
    71	
    72	#define pud_pgprot pud_pgprot
    73	static inline pgprot_t pud_pgprot(pud_t pud)
    74	{
  > 75		return pte_pgprot(pud_pte(pud));
    76	}
    77	

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