[hnaz-linux-mm:master 59/194] arch/powerpc/mm/pgtable.c:267:15: error: implicit declaration of function 'pmd_ptr'

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

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tree:   https://github.com/hnaz/linux-mm master
head:   a017b085735719105714da692a82a6eeb8830718
commit: eb0f7fa78a5ced856259e759b6bad1bed2a9295c [59/194] mm: pgtable: add shortcuts for accessing kernel PMD and PTE
config: powerpc-ep88xc_defconfig (attached as .config)
compiler: powerpc-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout eb0f7fa78a5ced856259e759b6bad1bed2a9295c
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=powerpc 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>, old ones prefixed by <<):

arch/powerpc/mm/pgtable.c: In function 'set_huge_pte_at':
>> arch/powerpc/mm/pgtable.c:267:15: error: implicit declaration of function 'pmd_ptr' [-Werror=implicit-function-declaration]
267 |  pmd_t *pmd = pmd_ptr(mm, addr);
|               ^~~~~~~
>> arch/powerpc/mm/pgtable.c:267:15: error: initialization of 'pmd_t *' {aka 'struct <anonymous> *'} from 'int' makes pointer from integer without a cast [-Werror=int-conversion]
arch/powerpc/mm/pgtable.c: At top level:
arch/powerpc/mm/pgtable.c:341:8: error: no previous prototype for '__find_linux_pte' [-Werror=missing-prototypes]
341 | pte_t *__find_linux_pte(pgd_t *pgdir, unsigned long ea,
|        ^~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors

vim +/pmd_ptr +267 arch/powerpc/mm/pgtable.c

f159bcb25fdb31 Andrew Morton    2020-06-09  263  
f159bcb25fdb31 Andrew Morton    2020-06-09  264  #if defined(CONFIG_PPC_8xx)
f159bcb25fdb31 Andrew Morton    2020-06-09  265  void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte)
f159bcb25fdb31 Andrew Morton    2020-06-09  266  {
f159bcb25fdb31 Andrew Morton    2020-06-09 @267  	pmd_t *pmd = pmd_ptr(mm, addr);
f159bcb25fdb31 Andrew Morton    2020-06-09  268  	pte_basic_t val;
f159bcb25fdb31 Andrew Morton    2020-06-09  269  	pte_basic_t *entry = &ptep->pte;
f159bcb25fdb31 Andrew Morton    2020-06-09  270  	int num = is_hugepd(*((hugepd_t *)pmd)) ? 1 : SZ_512K / SZ_4K;
f159bcb25fdb31 Andrew Morton    2020-06-09  271  	int i;
f159bcb25fdb31 Andrew Morton    2020-06-09  272  
f159bcb25fdb31 Andrew Morton    2020-06-09  273  	/*
f159bcb25fdb31 Andrew Morton    2020-06-09  274  	 * Make sure hardware valid bit is not set. We don't do
f159bcb25fdb31 Andrew Morton    2020-06-09  275  	 * tlb flush for this update.
f159bcb25fdb31 Andrew Morton    2020-06-09  276  	 */
f159bcb25fdb31 Andrew Morton    2020-06-09  277  	VM_WARN_ON(pte_hw_valid(*ptep) && !pte_protnone(*ptep));
f159bcb25fdb31 Andrew Morton    2020-06-09  278  
f159bcb25fdb31 Andrew Morton    2020-06-09  279  	pte = pte_mkpte(pte);
f159bcb25fdb31 Andrew Morton    2020-06-09  280  
f159bcb25fdb31 Andrew Morton    2020-06-09  281  	pte = set_pte_filter(pte);
f159bcb25fdb31 Andrew Morton    2020-06-09  282  
f159bcb25fdb31 Andrew Morton    2020-06-09  283  	val = pte_val(pte);
f159bcb25fdb31 Andrew Morton    2020-06-09  284  	for (i = 0; i < num; i++, entry++, val += SZ_4K)
f159bcb25fdb31 Andrew Morton    2020-06-09  285  		*entry = val;
f159bcb25fdb31 Andrew Morton    2020-06-09  286  }
f159bcb25fdb31 Andrew Morton    2020-06-09  287  #endif
f069ff396d657a Aneesh Kumar K.V 2018-05-29  288  #endif /* CONFIG_HUGETLB_PAGE */
f069ff396d657a Aneesh Kumar K.V 2018-05-29  289  

:::::: The code at line 267 was first introduced by commit
:::::: f159bcb25fdb31b93da0d50db40bc34e8cdcc713 origin

:::::: TO: Andrew Morton <akpm@linux-foundation.org>
:::::: CC: Johannes Weiner <hannes@cmpxchg.org>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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