Hi Guenter, kernel test robot noticed the following build errors: [auto build test ERROR on akpm-mm/mm-everything] url: https://github.com/intel-lab-lkp/linux/commits/Guenter-Roeck/mm-Make-SPLIT_PTE_PTLOCKS-depend-on-the-existence-of-NR_CPUS/20240923-222628 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20240923142533.1197982-1-linux%40roeck-us.net patch subject: [PATCH] mm: Make SPLIT_PTE_PTLOCKS depend on the existence of NR_CPUS config: s390-defconfig (https://download.01.org/0day-ci/archive/20240924/202409240546.SJwj9tUj-lkp@xxxxxxxxx/config) compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 8663a75fa2f31299ab8d1d90288d9df92aadee88) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240924/202409240546.SJwj9tUj-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/202409240546.SJwj9tUj-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from arch/s390/mm/gmap.c:12: In file included from include/linux/pagewalk.h:5: In file included from include/linux/mm.h:2198: include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 504 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 505 | item]; | ~~~~ include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 511 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 512 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 524 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 525 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ >> arch/s390/mm/gmap.c:357:9: error: call to undeclared function 'pmd_pgtable_page'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 357 | page = pmd_pgtable_page((pmd_t *) entry); | ^ >> arch/s390/mm/gmap.c:357:7: error: incompatible integer to pointer conversion assigning to 'struct page *' from 'int' [-Wint-conversion] 357 | page = pmd_pgtable_page((pmd_t *) entry); | ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 4 warnings and 2 errors generated. vim +/pmd_pgtable_page +357 arch/s390/mm/gmap.c 1e133ab296f3ff Martin Schwidefsky 2016-03-08 343 1e133ab296f3ff Martin Schwidefsky 2016-03-08 344 /** 1e133ab296f3ff Martin Schwidefsky 2016-03-08 345 * __gmap_segment_gaddr - find virtual address from segment pointer 1e133ab296f3ff Martin Schwidefsky 2016-03-08 346 * @entry: pointer to a segment table entry in the guest address space 1e133ab296f3ff Martin Schwidefsky 2016-03-08 347 * 1e133ab296f3ff Martin Schwidefsky 2016-03-08 348 * Returns the virtual address in the guest address space for the segment 1e133ab296f3ff Martin Schwidefsky 2016-03-08 349 */ 1e133ab296f3ff Martin Schwidefsky 2016-03-08 350 static unsigned long __gmap_segment_gaddr(unsigned long *entry) 1e133ab296f3ff Martin Schwidefsky 2016-03-08 351 { 1e133ab296f3ff Martin Schwidefsky 2016-03-08 352 struct page *page; 7e25de77bc5ea5 Anshuman Khandual 2022-11-25 353 unsigned long offset; 1e133ab296f3ff Martin Schwidefsky 2016-03-08 354 1e133ab296f3ff Martin Schwidefsky 2016-03-08 355 offset = (unsigned long) entry / sizeof(unsigned long); 1e133ab296f3ff Martin Schwidefsky 2016-03-08 356 offset = (offset & (PTRS_PER_PMD - 1)) * PMD_SIZE; 7e25de77bc5ea5 Anshuman Khandual 2022-11-25 @357 page = pmd_pgtable_page((pmd_t *) entry); 1e133ab296f3ff Martin Schwidefsky 2016-03-08 358 return page->index + offset; 1e133ab296f3ff Martin Schwidefsky 2016-03-08 359 } 1e133ab296f3ff Martin Schwidefsky 2016-03-08 360 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
