On Sat, Jan 08, 2022 at 10:48:34PM +0800, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git vhost > head: 008842b2060c14544ff452483ffd2241d145c7b2 > commit: 7620d51af29aa1c5d32150db2ac4b6187ef8af3a [30/44] vdpa/mlx5: Support configuring max data virtqueue > config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20220108/202201082258.aKRHnaJX-lkp@xxxxxxxxx/config) > compiler: powerpc-linux-gcc (GCC) 11.2.0 > reproduce: > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # apt-get install sparse > # sparse version: v0.6.4-dirty > # https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git/commit/?id=7620d51af29aa1c5d32150db2ac4b6187ef8af3a > git remote add mst-vhost https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git > git fetch --no-tags mst-vhost vhost > git checkout 7620d51af29aa1c5d32150db2ac4b6187ef8af3a > # save the config file to linux build tree > mkdir build_dir > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/vdpa/mlx5/ > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@xxxxxxxxx> > > > sparse warnings: (new ones prefixed by >>) > >> drivers/vdpa/mlx5/net/mlx5_vnet.c:1247:23: sparse: sparse: cast to restricted __le16 > >> drivers/vdpa/mlx5/net/mlx5_vnet.c:1247:23: sparse: sparse: cast from restricted __virtio16 > > vim +1247 drivers/vdpa/mlx5/net/mlx5_vnet.c > > 1232 > 1233 static int create_rqt(struct mlx5_vdpa_net *ndev) > 1234 { > 1235 __be32 *list; > 1236 int max_rqt; > 1237 void *rqtc; > 1238 int inlen; > 1239 void *in; > 1240 int i, j; > 1241 int err; > 1242 int num; > 1243 > 1244 if (!(ndev->mvdev.actual_features & BIT_ULL(VIRTIO_NET_F_MQ))) > 1245 num = 1; > 1246 else > > 1247 num = le16_to_cpu(ndev->config.max_virtqueue_pairs); What is the correct thing to do here? mlx5vdpa16_to_cpu? > 1248 > 1249 max_rqt = min_t(int, roundup_pow_of_two(num), > 1250 1 << MLX5_CAP_GEN(ndev->mvdev.mdev, log_max_rqt_size)); > 1251 if (max_rqt < 1) > 1252 return -EOPNOTSUPP; > 1253 > 1254 inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + max_rqt * MLX5_ST_SZ_BYTES(rq_num); > 1255 in = kzalloc(inlen, GFP_KERNEL); > 1256 if (!in) > 1257 return -ENOMEM; > 1258 > 1259 MLX5_SET(create_rqt_in, in, uid, ndev->mvdev.res.uid); > 1260 rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context); > 1261 > 1262 MLX5_SET(rqtc, rqtc, list_q_type, MLX5_RQTC_LIST_Q_TYPE_VIRTIO_NET_Q); > 1263 MLX5_SET(rqtc, rqtc, rqt_max_size, max_rqt); > 1264 list = MLX5_ADDR_OF(rqtc, rqtc, rq_num[0]); > 1265 for (i = 0, j = 0; i < max_rqt; i++, j += 2) > 1266 list[i] = cpu_to_be32(ndev->vqs[j % (2 * num)].virtq_id); > 1267 > 1268 MLX5_SET(rqtc, rqtc, rqt_actual_size, max_rqt); > 1269 err = mlx5_vdpa_create_rqt(&ndev->mvdev, in, inlen, &ndev->res.rqtn); > 1270 kfree(in); > 1271 if (err) > 1272 return err; > 1273 > 1274 return 0; > 1275 } > 1276 > > --- > 0-DAY CI Kernel Test Service, Intel Corporation > https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
