[mmotm:master 163/317] mm/hmm.c:537:8: error: implicit declaration of function 'pmd_pfn'; did you mean 'pte_pfn'?

[mmotm:master 163/317] mm/hmm.c:537:8: error: implicit declaration of function 'pmd_pfn'; did you mean 'pte_pfn'?

[kbuild test robot]

[-- Attachment #1: Type: text/plain, Size: 4593 bytes --]

tree:   git://git.cmpxchg.org/linux-mmotm.git master
head:   def6be39d5629b938faba788330db817d19a04da
commit: 1990c272782cac2f2d215067e0b053dd38fb9197 [163/317] mm/hmm: kconfig split HMM address space mirroring from device memory
config: riscv-allyesconfig (attached as .config)
compiler: riscv64-linux-gcc (GCC) 8.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 1990c272782cac2f2d215067e0b053dd38fb9197
        # save the attached .config to linux build tree
        GCC_VERSION=8.1.0 make.cross ARCH=riscv 

All errors (new ones prefixed by >>):

   mm/hmm.c: In function 'hmm_vma_handle_pmd':
>> mm/hmm.c:537:8: error: implicit declaration of function 'pmd_pfn'; did you mean 'pte_pfn'? [-Werror=implicit-function-declaration]
     pfn = pmd_pfn(pmd) + pte_index(addr);
           ^~~~~~~
           pte_pfn
   mm/hmm.c: In function 'hmm_vma_walk_pud':
>> mm/hmm.c:795:9: error: implicit declaration of function 'pud_pfn'; did you mean 'pte_pfn'? [-Werror=implicit-function-declaration]
      pfn = pud_pfn(pud) + ((addr & ~PUD_MASK) >> PAGE_SHIFT);
            ^~~~~~~
            pte_pfn
   mm/hmm.c: In function 'hmm_range_snapshot':
   mm/hmm.c:1018:19: warning: unused variable 'h' [-Wunused-variable]
       struct hstate *h = hstate_vma(vma);
                      ^
   cc1: some warnings being treated as errors

vim +537 mm/hmm.c

c49fcd0d4 Jérôme Glisse 2019-04-17  516  
53f5c3f48 Jérôme Glisse 2018-04-10  517  static int hmm_vma_handle_pmd(struct mm_walk *walk,
53f5c3f48 Jérôme Glisse 2018-04-10  518  			      unsigned long addr,
da4c3c735 Jérôme Glisse 2017-09-08  519  			      unsigned long end,
53f5c3f48 Jérôme Glisse 2018-04-10  520  			      uint64_t *pfns,
53f5c3f48 Jérôme Glisse 2018-04-10  521  			      pmd_t pmd)
da4c3c735 Jérôme Glisse 2017-09-08  522  {
74eee180b Jérôme Glisse 2017-09-08  523  	struct hmm_vma_walk *hmm_vma_walk = walk->private;
f88a1e90c Jérôme Glisse 2018-04-10  524  	struct hmm_range *range = hmm_vma_walk->range;
2aee09d8c Jérôme Glisse 2018-04-10  525  	unsigned long pfn, npages, i;
2aee09d8c Jérôme Glisse 2018-04-10  526  	bool fault, write_fault;
f88a1e90c Jérôme Glisse 2018-04-10  527  	uint64_t cpu_flags;
da4c3c735 Jérôme Glisse 2017-09-08  528  
2aee09d8c Jérôme Glisse 2018-04-10  529  	npages = (end - addr) >> PAGE_SHIFT;
f88a1e90c Jérôme Glisse 2018-04-10  530  	cpu_flags = pmd_to_hmm_pfn_flags(range, pmd);
2aee09d8c Jérôme Glisse 2018-04-10  531  	hmm_range_need_fault(hmm_vma_walk, pfns, npages, cpu_flags,
2aee09d8c Jérôme Glisse 2018-04-10  532  			     &fault, &write_fault);
da4c3c735 Jérôme Glisse 2017-09-08  533  
2aee09d8c Jérôme Glisse 2018-04-10  534  	if (pmd_protnone(pmd) || fault || write_fault)
2aee09d8c Jérôme Glisse 2018-04-10  535  		return hmm_vma_walk_hole_(addr, end, fault, write_fault, walk);
74eee180b Jérôme Glisse 2017-09-08  536  
da4c3c735 Jérôme Glisse 2017-09-08 @537  	pfn = pmd_pfn(pmd) + pte_index(addr);
c49fcd0d4 Jérôme Glisse 2019-04-17  538  	for (i = 0; addr < end; addr += PAGE_SIZE, i++, pfn++) {
c49fcd0d4 Jérôme Glisse 2019-04-17  539  		if (pmd_devmap(pmd)) {
c49fcd0d4 Jérôme Glisse 2019-04-17  540  			hmm_vma_walk->pgmap = get_dev_pagemap(pfn,
c49fcd0d4 Jérôme Glisse 2019-04-17  541  					      hmm_vma_walk->pgmap);
c49fcd0d4 Jérôme Glisse 2019-04-17  542  			if (unlikely(!hmm_vma_walk->pgmap))
c49fcd0d4 Jérôme Glisse 2019-04-17  543  				return -EBUSY;
c49fcd0d4 Jérôme Glisse 2019-04-17  544  		}
7cd123b65 Jérôme Glisse 2019-04-17  545  		pfns[i] = hmm_device_entry_from_pfn(range, pfn) | cpu_flags;
c49fcd0d4 Jérôme Glisse 2019-04-17  546  	}
c49fcd0d4 Jérôme Glisse 2019-04-17  547  	if (hmm_vma_walk->pgmap) {
c49fcd0d4 Jérôme Glisse 2019-04-17  548  		put_dev_pagemap(hmm_vma_walk->pgmap);
c49fcd0d4 Jérôme Glisse 2019-04-17  549  		hmm_vma_walk->pgmap = NULL;
c49fcd0d4 Jérôme Glisse 2019-04-17  550  	}
53f5c3f48 Jérôme Glisse 2018-04-10  551  	hmm_vma_walk->last = end;
da4c3c735 Jérôme Glisse 2017-09-08  552  	return 0;
da4c3c735 Jérôme Glisse 2017-09-08  553  }
da4c3c735 Jérôme Glisse 2017-09-08  554  

:::::: The code at line 537 was first introduced by commit
:::::: da4c3c735ea4dcc2a0b0ff0bd4803c336361b6f5 mm/hmm/mirror: helper to snapshot CPU page table

:::::: TO: Jérôme Glisse <jglisse@redhat.com>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 56012 bytes --]