Hi Matthew, kernel test robot noticed the following build errors: [auto build test ERROR on akpm-mm/mm-everything] [also build test ERROR on arm64/for-next/core tip/x86/core tip/x86/mm linus/master v6.11-rc4 next-20240822] [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/Matthew-Wilcox-Oracle/mm-Remove-PageActive/20240822-033717 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20240821193445.2294269-2-willy%40infradead.org patch subject: [PATCH 01/10] mm: Remove PageActive config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20240822/202408222044.zZMToCKk-lkp@xxxxxxxxx/config) compiler: powerpc64-linux-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240822/202408222044.zZMToCKk-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/202408222044.zZMToCKk-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): arch/powerpc/mm/pgtable-frag.c: In function 'pte_free_defer': >> arch/powerpc/mm/pgtable-frag.c:142:9: error: implicit declaration of function 'SetPageActive' [-Wimplicit-function-declaration] 142 | SetPageActive(page); | ^~~~~~~~~~~~~ vim +/SetPageActive +142 arch/powerpc/mm/pgtable-frag.c 32cc0b7c9d508e Hugh Dickins 2023-07-11 135 32cc0b7c9d508e Hugh Dickins 2023-07-11 136 #ifdef CONFIG_TRANSPARENT_HUGEPAGE 32cc0b7c9d508e Hugh Dickins 2023-07-11 137 void pte_free_defer(struct mm_struct *mm, pgtable_t pgtable) 32cc0b7c9d508e Hugh Dickins 2023-07-11 138 { 32cc0b7c9d508e Hugh Dickins 2023-07-11 139 struct page *page; 32cc0b7c9d508e Hugh Dickins 2023-07-11 140 32cc0b7c9d508e Hugh Dickins 2023-07-11 141 page = virt_to_page(pgtable); 32cc0b7c9d508e Hugh Dickins 2023-07-11 @142 SetPageActive(page); -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki