Hi Bibo, kernel test robot noticed the following build warnings: [auto build test WARNING on 87d6aab2389e5ce0197d8257d5f8ee965a67c4cd] url: https://github.com/intel-lab-lkp/linux/commits/Bibo-Mao/LoongArch-Set-pte-entry-with-PAGE_GLOBAL-for-kernel-space/20241010-115120 base: 87d6aab2389e5ce0197d8257d5f8ee965a67c4cd patch link: https://lore.kernel.org/r/20241010035048.3422527-3-maobibo%40loongson.cn patch subject: [PATCH 2/4] mm/sparse-vmemmap: set pte_init when vmemmap is created config: x86_64-defconfig (https://download.01.org/0day-ci/archive/20241011/202410111213.dfJ08626-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-12) 11.3.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241011/202410111213.dfJ08626-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/202410111213.dfJ08626-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> mm/sparse-vmemmap.c:187:23: warning: no previous prototype for 'kernel_pte_init' [-Wmissing-prototypes] 187 | void __weak __meminit kernel_pte_init(void *addr) | ^~~~~~~~~~~~~~~ vim +/kernel_pte_init +187 mm/sparse-vmemmap.c 186 > 187 void __weak __meminit kernel_pte_init(void *addr) 188 { 189 } 190 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
