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-rc6 next-20200317] [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/20200318-191435 base: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next config: nds32-randconfig-a001-20200318 (attached as .config) compiler: nds32le-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=nds32 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): nds32le-linux-ld: arch/nds32/kernel/ex-entry.o: in function `common_exception_handler': (.text+0xfe): undefined reference to `__trace_hardirqs_off' (.text+0xfe): relocation truncated to fit: R_NDS32_25_PCREL_RELA against undefined symbol `__trace_hardirqs_off' nds32le-linux-ld: arch/nds32/kernel/ex-exit.o: in function `no_work_pending': (.text+0xce): undefined reference to `__trace_hardirqs_off' nds32le-linux-ld: (.text+0xd2): undefined reference to `__trace_hardirqs_off' nds32le-linux-ld: (.text+0xd6): undefined reference to `__trace_hardirqs_on' nds32le-linux-ld: (.text+0xda): undefined reference to `__trace_hardirqs_on' nds32le-linux-ld: drivers/vhost/vringh.o: in function `iotlb_translate.isra.0': >> vringh.c:(.text+0xa68): undefined reference to `vhost_iotlb_itree_first' >> nds32le-linux-ld: vringh.c:(.text+0xa6c): 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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