Hi Jason, I love your patch! Perhaps something to improve: [auto build test WARNING on vhost/linux-next] [also build test WARNING on linus/master v5.10] [cannot apply to next-20201217] [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/Jason-Wang/Control-VQ-support-in-vDPA/20201216-150025 base: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next config: x86_64-randconfig-a014-20201217 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project cee1e7d14f4628d6174b33640d502bff3b54ae45) 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 # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://github.com/0day-ci/linux/commit/157796e1c075942914d2096899f4a9b7cf824373 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Jason-Wang/Control-VQ-support-in-vDPA/20201216-150025 git checkout 157796e1c075942914d2096899f4a9b7cf824373 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/vdpa/vdpa_sim/vdpa_sim.c:204:21: warning: no previous prototype for function 'vdpasim_handle_ctrl_mac' [-Wmissing-prototypes] virtio_net_ctrl_ack vdpasim_handle_ctrl_mac(struct vdpasim *vdpasim, ^ drivers/vdpa/vdpa_sim/vdpa_sim.c:204:1: note: declare 'static' if the function is not intended to be used outside of this translation unit virtio_net_ctrl_ack vdpasim_handle_ctrl_mac(struct vdpasim *vdpasim, ^ static >> drivers/vdpa/vdpa_sim/vdpa_sim.c:731:5: warning: no previous prototype for function 'vdpasim_set_group_asid' [-Wmissing-prototypes] int vdpasim_set_group_asid(struct vdpa_device *vdpa, unsigned int group, ^ drivers/vdpa/vdpa_sim/vdpa_sim.c:731:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int vdpasim_set_group_asid(struct vdpa_device *vdpa, unsigned int group, ^ static drivers/vdpa/vdpa_sim/vdpa_sim.c:101:19: warning: unused function 'vdpasim16_to_cpu' [-Wunused-function] static inline u16 vdpasim16_to_cpu(struct vdpasim *vdpasim, __virtio16 val) ^ 3 warnings generated. vim +/vdpasim_handle_ctrl_mac +204 drivers/vdpa/vdpa_sim/vdpa_sim.c 203 > 204 virtio_net_ctrl_ack vdpasim_handle_ctrl_mac(struct vdpasim *vdpasim, 205 u8 cmd) 206 { 207 struct vdpasim_virtqueue *cvq = &vdpasim->vqs[2]; 208 virtio_net_ctrl_ack status = VIRTIO_NET_ERR; 209 size_t read; 210 211 switch (cmd) { 212 case VIRTIO_NET_CTRL_MAC_ADDR_SET: 213 read = vringh_iov_pull_iotlb(&cvq->vring, &cvq->in_iov, 214 (void *)vdpasim->config.mac, 215 ETH_ALEN); 216 if (read == ETH_ALEN) 217 status = VIRTIO_NET_OK; 218 break; 219 default: 220 break; 221 } 222 223 return status; 224 } 225 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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