[arm64:for-next/faultaround 1/10] mm/filemap.c:3056:3: error: implicit declaration of function 'update_mmu_cache'; did you mean

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/faultaround
head:   de591a82f41b61af4a8fce49d21b43105c5c2186
commit: f9ce0be71d1fbb038ada15ced83474b0e63f264d [1/10] mm: Cleanup faultaround and finish_fault() codepaths
config: microblaze-randconfig-r014-20210209 (attached as .config)
compiler: microblaze-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
        # https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git/commit/?id=f9ce0be71d1fbb038ada15ced83474b0e63f264d
        git remote add arm64 https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git
        git fetch --no-tags arm64 for-next/faultaround
        git checkout f9ce0be71d1fbb038ada15ced83474b0e63f264d
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=microblaze 

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

Note: the arm64/for-next/faultaround HEAD de591a82f41b61af4a8fce49d21b43105c5c2186 builds fine.
      It only hurts bisectibility.

All errors (new ones prefixed by >>):

   mm/filemap.c: In function 'filemap_map_pages':
>> mm/filemap.c:3056:3: error: implicit declaration of function 'update_mmu_cache'; did you mean 'update_mmu_tlb'? [-Werror=implicit-function-declaration]
    3056 |   update_mmu_cache(vma, vmf->address, vmf->pte);
         |   ^~~~~~~~~~~~~~~~
         |   update_mmu_tlb
   cc1: some warnings being treated as errors


vim +3056 mm/filemap.c

  3013	
  3014	vm_fault_t filemap_map_pages(struct vm_fault *vmf,
  3015				     pgoff_t start_pgoff, pgoff_t end_pgoff)
  3016	{
  3017		struct vm_area_struct *vma = vmf->vma;
  3018		struct file *file = vma->vm_file;
  3019		struct address_space *mapping = file->f_mapping;
  3020		pgoff_t last_pgoff = start_pgoff;
  3021		unsigned long address = vmf->address;
  3022		XA_STATE(xas, &mapping->i_pages, start_pgoff);
  3023		struct page *head, *page;
  3024		unsigned int mmap_miss = READ_ONCE(file->f_ra.mmap_miss);
  3025		vm_fault_t ret = 0;
  3026	
  3027		rcu_read_lock();
  3028		head = first_map_page(mapping, &xas, end_pgoff);
  3029		if (!head)
  3030			goto out;
  3031	
  3032		if (filemap_map_pmd(vmf, head)) {
  3033			ret = VM_FAULT_NOPAGE;
  3034			goto out;
  3035		}
  3036	
  3037		vmf->address = vma->vm_start + ((start_pgoff - vma->vm_pgoff) << PAGE_SHIFT);
  3038		vmf->pte = pte_offset_map_lock(vma->vm_mm, vmf->pmd, vmf->address, &vmf->ptl);
  3039		do {
  3040			page = find_subpage(head, xas.xa_index);
  3041			if (PageHWPoison(page))
  3042				goto unlock;
  3043	
  3044			if (mmap_miss > 0)
  3045				mmap_miss--;
  3046	
  3047			vmf->address += (xas.xa_index - last_pgoff) << PAGE_SHIFT;
  3048			vmf->pte += xas.xa_index - last_pgoff;
  3049			last_pgoff = xas.xa_index;
  3050	
  3051			if (!pte_none(*vmf->pte))
  3052				goto unlock;
  3053	
  3054			do_set_pte(vmf, page);
  3055			/* no need to invalidate: a not-present page won't be cached */
> 3056			update_mmu_cache(vma, vmf->address, vmf->pte);
  3057			unlock_page(head);
  3058	
  3059			/* The fault is handled */
  3060			if (vmf->address == address)
  3061				ret = VM_FAULT_NOPAGE;
  3062			continue;
  3063	unlock:
  3064			unlock_page(head);
  3065			put_page(head);
  3066		} while ((head = next_map_page(mapping, &xas, end_pgoff)) != NULL);
  3067		pte_unmap_unlock(vmf->pte, vmf->ptl);
  3068	out:
  3069		rcu_read_unlock();
  3070		vmf->address = address;
  3071		WRITE_ONCE(file->f_ra.mmap_miss, mmap_miss);
  3072		return ret;
  3073	}
  3074	EXPORT_SYMBOL(filemap_map_pages);
  3075	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
-------------- next part --------------
A non-text attachment was scrubbed...
Name: .config.gz
Type: application/gzip
Size: 41307 bytes
Desc: not available
URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20210212/8c4bbd8a/attachment-0001.gz>