Hi Xie, Thank you for the patch! Yet something to improve: [auto build test ERROR on vhost/linux-next] [also build test ERROR on iommu/next uml/linux-next s390/features linus/master v5.14-rc1 next-20210714] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Xie-Yongji/Introduce-VDUSE-vDPA-... base: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next config: arm64-allyesconfig (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/ade2af66f29301fe5d897bfddfabc27f5... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Xie-Yongji/Introduce-VDUSE-vDPA-Device-in-Userspace/20210713-165009 git checkout ade2af66f29301fe5d897bfddfabc27f5f5cd678 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): 537 | .reset = vm_reset, | ^~~~~~~~ drivers/virtio/virtio_mmio.c:537:12: note: (near initialization for 'virtio_mmio_config_ops.reset') cc1: some warnings being treated as errors vim +537 drivers/virtio/virtio_mmio.c 38e895487afc2e Sebastien Boeuf 2020-08-19 530 9350393239153c Stephen Hemminger 2013-02-10 531 static const struct virtio_config_ops virtio_mmio_config_ops = { edfd52e6367270 Pawel Moll 2011-10-24 532 .get = vm_get, edfd52e6367270 Pawel Moll 2011-10-24 533 .set = vm_set, 87e7bf1450c9f6 Michael S. Tsirkin 2015-03-12 534 .generation = vm_generation, edfd52e6367270 Pawel Moll 2011-10-24 535 .get_status = vm_get_status, edfd52e6367270 Pawel Moll 2011-10-24 536 .set_status = vm_set_status, edfd52e6367270 Pawel Moll 2011-10-24 @537 .reset = vm_reset, edfd52e6367270 Pawel Moll 2011-10-24 538 .find_vqs = vm_find_vqs, edfd52e6367270 Pawel Moll 2011-10-24 539 .del_vqs = vm_del_vqs, edfd52e6367270 Pawel Moll 2011-10-24 540 .get_features = vm_get_features, edfd52e6367270 Pawel Moll 2011-10-24 541 .finalize_features = vm_finalize_features, 66846048f55c6c Rick Jones 2011-11-14 542 .bus_name = vm_bus_name, 38e895487afc2e Sebastien Boeuf 2020-08-19 543 .get_shm_region = vm_get_shm_region, edfd52e6367270 Pawel Moll 2011-10-24 544 }; edfd52e6367270 Pawel Moll 2011-10-24 545 edfd52e6367270 Pawel Moll 2011-10-24 546 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org