Hi Byungchul, kernel test robot noticed the following build errors: [auto build test ERROR on akpm-mm/mm-everything] [also build test ERROR on tip/sched/core tip/x86/core arm64/for-next/core tip/x86/mm linus/master v6.7 next-20240111] [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/Byungchul-Park/x86-tlb-Add-APIs-manipulating-tlb-batch-s-arch-data/20240111-141049 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20240111060757.13563-7-byungchul%40sk.com patch subject: [v5 6/7] mm: Defer TLB flush by keeping both src and dst folios at migration config: x86_64-buildonly-randconfig-005-20240111 (https://download.01.org/0day-ci/archive/20240112/202401120309.9xlXPJBx-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240112/202401120309.9xlXPJBx-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/202401120309.9xlXPJBx-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from mm/hwpoison-inject.c:10: mm/internal.h: In function 'init_tlb_ubc': >> mm/internal.h:931:9: error: implicit declaration of function 'arch_tlbbatch_clear' [-Werror=implicit-function-declaration] 931 | arch_tlbbatch_clear(&ubc->arch); | ^~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/arch_tlbbatch_clear +931 mm/internal.h 928 929 static inline void init_tlb_ubc(struct tlbflush_unmap_batch *ubc) 930 { > 931 arch_tlbbatch_clear(&ubc->arch); 932 ubc->flush_required = false; 933 ubc->writable = false; 934 } 935 #else 936 static inline void try_to_unmap_flush(void) 937 { 938 } 939 static inline void try_to_unmap_flush_dirty(void) 940 { 941 } 942 static inline void flush_tlb_batched_pending(struct mm_struct *mm) 943 { 944 } 945 static inline void fold_ubc(struct tlbflush_unmap_batch *dst, struct tlbflush_unmap_batch *src) 946 { 947 } 948 static inline void init_tlb_ubc(struct tlbflush_unmap_batch *ubc) 949 { 950 } 951 #endif /* CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH */ 952 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
