Hi Byungchul, kernel test robot noticed the following build errors: [auto build test ERROR on 0dd3ee31125508cd67f7e7172247f05b7fd1753a] url: https://github.com/intel-lab-lkp/linux/commits/Byungchul-Park/x86-tlb-Add-APIs-manipulating-tlb-batch-s-arch-data/20240115-162220 base: 0dd3ee31125508cd67f7e7172247f05b7fd1753a patch link: https://lore.kernel.org/r/20240115081953.2521-7-byungchul%40sk.com patch subject: [PATCH v6 6/7] mm: Defer TLB flush by keeping both src and dst folios at migration config: loongarch-allmodconfig (https://download.01.org/0day-ci/archive/20240116/202401160941.4iwBnNkq-lkp@xxxxxxxxx/config) compiler: loongarch64-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240116/202401160941.4iwBnNkq-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/202401160941.4iwBnNkq-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from arch/loongarch/include/asm/vdso.h:10, from arch/loongarch/include/asm/elf.h:13, from include/linux/elf.h:6, from include/linux/module.h:19, from lib/test_bitops.c:9: >> include/linux/mm.h:2046:43: error: 'struct arch_tlbflush_unmap_batch' declared inside parameter list will not be visible outside of this definition or declaration [-Werror] 2046 | static inline void migrc_flush_end(struct arch_tlbflush_unmap_batch *arch) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors vim +2046 include/linux/mm.h 2040 2041 #if defined(CONFIG_MIGRATION) && defined(CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH) 2042 extern void migrc_flush_start(void); 2043 extern void migrc_flush_end(struct arch_tlbflush_unmap_batch *arch); 2044 #else 2045 static inline void migrc_flush_start(void) {} > 2046 static inline void migrc_flush_end(struct arch_tlbflush_unmap_batch *arch) {} 2047 #endif 2048 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki