Hi Heng, kernel test robot noticed the following build errors: [auto build test ERROR on net-next/main] url: https://github.com/intel-lab-lkp/linux/commits/Heng-Qi/virtio-net-returns-whether-napi-is-complete/20231207-143044 base: net-next/main patch link: https://lore.kernel.org/r/9be20d1e86bea91b373f28401a96401b640ef4d1.1701929854.git.hengqi%40linux.alibaba.com patch subject: [PATCH net-next v7 4/4] virtio-net: support rx netdim config: nios2-randconfig-r064-20231209 (https://download.01.org/0day-ci/archive/20231209/202312091132.7eR6Cbs9-lkp@xxxxxxxxx/config) compiler: nios2-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231209/202312091132.7eR6Cbs9-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/202312091132.7eR6Cbs9-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): nios2-linux-ld: drivers/net/virtio_net.o: in function `virtnet_rx_dim_work': virtio_net.c:(.text+0x21dc): undefined reference to `net_dim_get_rx_moderation' >> virtio_net.c:(.text+0x21dc): relocation truncated to fit: R_NIOS2_CALL26 against `net_dim_get_rx_moderation' nios2-linux-ld: drivers/net/virtio_net.o: in function `virtnet_poll': virtio_net.c:(.text+0x97bc): undefined reference to `net_dim' >> virtio_net.c:(.text+0x97bc): relocation truncated to fit: R_NIOS2_CALL26 against `net_dim' -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki