tree: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git vhost head: 38dd2ba72ece18ec8398c8ddd13cfb02870b0309 commit: 38dd2ba72ece18ec8398c8ddd13cfb02870b0309 [22/22] virtio/test: fix up after IOTLB changes config: riscv-allyesconfig (attached as .config) compiler: riscv64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 38dd2ba72ece18ec8398c8ddd13cfb02870b0309 # save the attached .config to linux build tree GCC_VERSION=9.3.0 make.cross ARCH=riscv If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): riscv64-linux-ld: drivers/vdpa/vdpa_sim/vdpa_sim.o: in function `.L42': vdpa_sim.c:(.text+0x682): undefined reference to `vringh_getdesc_iotlb' riscv64-linux-ld: drivers/vdpa/vdpa_sim/vdpa_sim.o: in function `.L36': riscv64-linux-ld: drivers/vdpa/vdpa_sim/vdpa_sim.o: in function `.L38': riscv64-linux-ld: vdpa_sim.c:(.text+0x736): undefined reference to `vringh_complete_iotlb' riscv64-linux-ld: drivers/vdpa/vdpa_sim/vdpa_sim.o: in function `vdpasim_set_status': vdpa_sim.c:(.text+0xad2): undefined reference to `vringh_init_iotlb' riscv64-linux-ld: drivers/vdpa/vdpa_sim/vdpa_sim.o: in function `vdpasim_set_vq_ready': vdpa_sim.c:(.text+0xc6e): undefined reference to `vringh_init_iotlb' riscv64-linux-ld: drivers/vdpa/vdpa_sim/vdpa_sim.o: in function `.L0 ': vdpa_sim.c:(.init.text+0x1a4): undefined reference to `vringh_set_iotlb' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org