tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: b4a3c05741e1650e8bb8399196fb5d7a318a4698 commit: 923e224a12462d640fa37f3069c6bfafd378ac3b [3214/3214] mm: introduce remap_pfn_range_try_pmd() for PMD-level hugepage mapping config: x86_64-randconfig-r111-20251118 (https://download.01.org/0day-ci/archive/20251119/202511190025.obom3fen-lkp@i...) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251119/202511190025.obom3fen-lkp@i...) 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/202511190025.obom3fen-lkp@intel.com/ sparse warnings: (new ones prefixed by >>)

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mm/memory.c:2802:5: sparse: sparse: symbol '__remap_pfn_range' was not declared. Should it be static? mm/memory.c:301:9: sparse: sparse: incompatible types in conditional expression (different base types): mm/memory.c:301:9: sparse: void mm/memory.c:301:9: sparse: int

vim +/__remap_pfn_range +2802 mm/memory.c 2789 2790 /** 2791 * remap_pfn_range - remap kernel memory to userspace 2792 * @vma: user vma to map to 2793 * @addr: target page aligned user address to start at 2794 * @pfn: page frame number of kernel physical memory address 2795 * @size: size of mapping area 2796 * @prot: page protection flags for this mapping 2797 * 2798 * Note: this is only safe if the mm semaphore is held when called. 2799 * 2800 * Return: %0 on success, negative error code otherwise. 2801 */

2802 int __remap_pfn_range(struct vm_area_struct *vma, unsigned long addr, 2803 unsigned long pfn, unsigned long size, pgprot_t prot, 2804 unsigned int page_shift) 2805 { 2806 int err; 2807 2808 err = track_pfn_remap(vma, &prot, pfn, addr, PAGE_ALIGN(size)); 2809 if (err) 2810 return -EINVAL; 2811 2812 err = __remap_pfn_range_notrack(vma, addr, pfn, size, prot, page_shift); 2813 if (err) 2814 untrack_pfn(vma, pfn, PAGE_ALIGN(size), true); 2815 return err; 2816 } 2817

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