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: alpha-randconfig-a001-20200324 (attached as .config) compiler: alpha-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=alpha If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): alpha-linux-ld: drivers/vhost/vringh.o: in function `iotlb_translate': drivers/vhost/vringh.c:1079: undefined reference to `vhost_iotlb_itree_first' >> alpha-linux-ld: drivers/vhost/vringh.c:1079: 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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