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SubjectRe: [PATCH V6 3/8] vringh: IOTLB support
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@intel.com>

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@lists.01.org
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