Hi Maxwell, kernel test robot noticed the following build errors: [auto build test ERROR on b401b621758e46812da61fa58a67c3fd8d91de0d] url: https://github.com/intel-lab-lkp/linux/commits/Maxwell-Bland/mm-vmalloc-allow-arch-specific-vmalloc_node-overrides/20240221-043458 base: b401b621758e46812da61fa58a67c3fd8d91de0d patch link: https://lore.kernel.org/r/20240220203256.31153-3-mbland%40motorola.com patch subject: [PATCH 2/4] mm: pgalloc: support address-conditional pmd allocation config: arm-defconfig (https://download.01.org/0day-ci/archive/20240222/202402220006.5v6axq6B-lkp@xxxxxxxxx/config) compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project.git f28c006a5895fc0e329fe15fead81e37457cb1d1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240222/202402220006.5v6axq6B-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/202402220006.5v6axq6B-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> mm/memory.c:459:3: error: implicit declaration of function 'pmd_populate_kernel_at' is invalid in C99 [-Werror,-Wimplicit-function-declaration] pmd_populate_kernel_at(&init_mm, pmd, new, address); ^ mm/memory.c:459:3: note: did you mean 'pmd_populate_kernel'? arch/arm/include/asm/pgalloc.h:125:1: note: 'pmd_populate_kernel' declared here pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep) ^ 1 error generated. vim +/pmd_populate_kernel_at +459 mm/memory.c 449 450 int __pte_alloc_kernel(pmd_t *pmd, unsigned long address) 451 { 452 pte_t *new = pte_alloc_one_kernel(&init_mm); 453 if (!new) 454 return -ENOMEM; 455 456 spin_lock(&init_mm.page_table_lock); 457 if (likely(pmd_none(*pmd))) { /* Has another populated it ? */ 458 smp_wmb(); /* See comment in pmd_install() */ > 459 pmd_populate_kernel_at(&init_mm, pmd, new, address); 460 new = NULL; 461 } 462 spin_unlock(&init_mm.page_table_lock); 463 if (new) 464 pte_free_kernel(&init_mm, new); 465 return 0; 466 } 467 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
