Hi Claudio, kernel test robot noticed the following build warnings: [auto build test WARNING on kvms390/next] [also build test WARNING on s390/features kvm/queue kvm/next mst-vhost/linux-next linus/master v6.15-rc7 next-20250522] [cannot apply to kvm/linux-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/Claudio-Imbrenda/s390-remove-unneeded-includes/20250522-212623 base: https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux.git next patch link: https://lore.kernel.org/r/20250522132259.167708-4-imbrenda%40linux.ibm.com patch subject: [PATCH v3 3/4] KVM: s390: refactor and split some gmap helpers config: s390-randconfig-001-20250523 (https://download.01.org/0day-ci/archive/20250523/202505230839.LAF8wtzO-lkp@xxxxxxxxx/config) compiler: s390-linux-gcc (GCC) 8.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250523/202505230839.LAF8wtzO-lkp@xxxxxxxxx/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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202505230839.LAF8wtzO-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): arch/s390/mm/gmap_helpers.c: In function 'ptep_zap_swap_entry': arch/s390/mm/gmap_helpers.c:26:7: error: implicit declaration of function 'non_swap_entry'; did you mean 'init_wait_entry'? [-Werror=implicit-function-declaration] if (!non_swap_entry(entry)) ^~~~~~~~~~~~~~ init_wait_entry arch/s390/mm/gmap_helpers.c:28:11: error: implicit declaration of function 'is_migration_entry'; did you mean 'list_first_entry'? [-Werror=implicit-function-declaration] else if (is_migration_entry(entry)) ^~~~~~~~~~~~~~~~~~ list_first_entry arch/s390/mm/gmap_helpers.c:29:33: error: implicit declaration of function 'pfn_swap_entry_folio'; did you mean 'filemap_dirty_folio'? [-Werror=implicit-function-declaration] dec_mm_counter(mm, mm_counter(pfn_swap_entry_folio(entry))); ^~~~~~~~~~~~~~~~~~~~ filemap_dirty_folio >> arch/s390/mm/gmap_helpers.c:29:33: warning: passing argument 1 of 'mm_counter' makes pointer from integer without a cast [-Wint-conversion] dec_mm_counter(mm, mm_counter(pfn_swap_entry_folio(entry))); ^~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from arch/s390/mm/gmap_helpers.c:9: include/linux/mm.h:2725:44: note: expected 'struct folio *' but argument is of type 'int' static inline int mm_counter(struct folio *folio) ~~~~~~~~~~~~~~^~~~~ arch/s390/mm/gmap_helpers.c:30:2: error: implicit declaration of function 'free_swap_and_cache'; did you mean 'free_pgd_range'? [-Werror=implicit-function-declaration] free_swap_and_cache(entry); ^~~~~~~~~~~~~~~~~~~ free_pgd_range arch/s390/mm/gmap_helpers.c: In function 'gmap_helper_zap_one_page': arch/s390/mm/gmap_helpers.c:60:27: error: implicit declaration of function 'pte_to_swp_entry'; did you mean 'ptep_zap_swap_entry'? [-Werror=implicit-function-declaration] ptep_zap_swap_entry(mm, pte_to_swp_entry(*ptep)); ^~~~~~~~~~~~~~~~ ptep_zap_swap_entry arch/s390/mm/gmap_helpers.c:60:27: error: incompatible type for argument 2 of 'ptep_zap_swap_entry' ptep_zap_swap_entry(mm, pte_to_swp_entry(*ptep)); ^~~~~~~~~~~~~~~~~~~~~~~ arch/s390/mm/gmap_helpers.c:24:67: note: expected 'swp_entry_t' {aka 'struct <anonymous>'} but argument is of type 'int' static void ptep_zap_swap_entry(struct mm_struct *mm, swp_entry_t entry) ~~~~~~~~~~~~^~~~~ cc1: some warnings being treated as errors -- >> arch/s390/mm/gmap.c:2251:33: warning: 'find_zeropage_ops' defined but not used [-Wunused-const-variable=] static const struct mm_walk_ops find_zeropage_ops = { ^~~~~~~~~~~~~~~~~ vim +/mm_counter +29 arch/s390/mm/gmap_helpers.c 14 15 /** 16 * ptep_zap_swap_entry() - discard a swap entry. 17 * @mm: the mm 18 * @entry: the swap entry that needs to be zapped 19 * 20 * Discards the given swap entry. If the swap entry was an actual swap 21 * entry (and not a migration entry, for example), the actual swapped 22 * page is also discarded from swap. 23 */ 24 static void ptep_zap_swap_entry(struct mm_struct *mm, swp_entry_t entry) 25 { 26 if (!non_swap_entry(entry)) 27 dec_mm_counter(mm, MM_SWAPENTS); 28 else if (is_migration_entry(entry)) > 29 dec_mm_counter(mm, mm_counter(pfn_swap_entry_folio(entry))); 30 free_swap_and_cache(entry); 31 } 32 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
