Hi Jason, I love your patch! Yet something to improve: [auto build test ERROR on vhost/linux-next] [also build test ERROR on linux/master linus/master v5.6-rc7 next-20200324] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Jason-Wang/vDPA-support/20200324-142634 base: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next config: m68k-allyesconfig (attached as .config) compiler: m68k-linux-gcc (GCC) 9.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=9.2.0 make.cross ARCH=m68k If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): m68k-linux-ld: drivers/virtio/vdpa/vdpa_sim/vdpa_sim.o: in function `vdpasim_set_map': vdpa_sim.c:(.text+0x61a): undefined reference to `vhost_iotlb_reset' >> m68k-linux-ld: vdpa_sim.c:(.text+0x64a): undefined reference to `vhost_iotlb_itree_next' m68k-linux-ld: drivers/virtio/vdpa/vdpa_sim/vdpa_sim.o: in function `vdpasim_unmap_page': vdpa_sim.c:(.text+0x22c): undefined reference to `vhost_iotlb_del_range' m68k-linux-ld: drivers/virtio/vdpa/vdpa_sim/vdpa_sim.o: in function `vdpasim_dma_unmap': vdpa_sim.c:(.text+0x278): undefined reference to `vhost_iotlb_del_range' m68k-linux-ld: drivers/virtio/vdpa/vdpa_sim/vdpa_sim.o: in function `vdpasim_dma_map': vdpa_sim.c:(.text+0x2cc): undefined reference to `vhost_iotlb_add_range' m68k-linux-ld: drivers/virtio/vdpa/vdpa_sim/vdpa_sim.o: in function `vdpasim_map_page': vdpa_sim.c:(.text+0x392): undefined reference to `vhost_iotlb_add_range' m68k-linux-ld: drivers/virtio/vdpa/vdpa_sim/vdpa_sim.o: in function `vdpasim_free_coherent': vdpa_sim.c:(.text+0x3e2): undefined reference to `vhost_iotlb_del_range' m68k-linux-ld: drivers/virtio/vdpa/vdpa_sim/vdpa_sim.o: in function `vdpasim_free': vdpa_sim.c:(.text+0x5fa): undefined reference to `vhost_iotlb_free' m68k-linux-ld: drivers/virtio/vdpa/vdpa_sim/vdpa_sim.o: in function `vdpasim_set_map': >> vdpa_sim.c:(.text+0x634): undefined reference to `vhost_iotlb_itree_first' >> m68k-linux-ld: vdpa_sim.c:(.text+0x644): undefined reference to `vhost_iotlb_add_range' m68k-linux-ld: drivers/virtio/vdpa/vdpa_sim/vdpa_sim.o: in function `vdpasim_set_status': vdpa_sim.c:(.text+0x7b8): undefined reference to `vhost_iotlb_reset' m68k-linux-ld: drivers/virtio/vdpa/vdpa_sim/vdpa_sim.o: in function `vdpasim_alloc_coherent': vdpa_sim.c:(.text+0x8c2): undefined reference to `vhost_iotlb_add_range' m68k-linux-ld: drivers/virtio/vdpa/vdpa_sim/vdpa_sim.o: in function `vdpasim_dev_init': vdpa_sim.c:(.init.text+0x86): undefined reference to `vhost_iotlb_alloc' m68k-linux-ld: drivers/vhost/vringh.o: in function `iotlb_translate.isra.0': vringh.c:(.text+0x172): undefined reference to `vhost_iotlb_itree_first' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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