1:36 a.m.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 7eac66d0456fe12a462e5c14c68e97c7460989da
commit: 94abbccdf2916cb03f9626f2d36c6e9971490c12 vdpa/mlx5: Add shared memory registration
code
date: 2 weeks ago
config: x86_64-randconfig-m001-20200820 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce (this is a W=1 build):
git checkout 94abbccdf2916cb03f9626f2d36c6e9971490c12
# save the attached .config to linux build tree
make W=1 ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All errors (new ones prefixed by >>):
ld: drivers/vdpa/mlx5/core/mr.o: in function `map_direct_mr':
> drivers/vdpa/mlx5/core/mr.c:244: undefined reference to
`vhost_iotlb_itree_first'
> ld: drivers/vdpa/mlx5/core/mr.c:245: undefined reference to
`vhost_iotlb_itree_next'
> ld: drivers/vdpa/mlx5/core/mr.c:260: undefined reference to
`vhost_iotlb_itree_first'
ld: drivers/vdpa/mlx5/core/mr.c:261: undefined
reference to `vhost_iotlb_itree_next'
ld: drivers/vdpa/mlx5/core/mr.o: in function `_mlx5_vdpa_create_mr':
drivers/vdpa/mlx5/core/mr.c:377: undefined reference to `vhost_iotlb_itree_first'
ld: drivers/vdpa/mlx5/core/mr.c:378: undefined reference to
`vhost_iotlb_itree_next'
ld: drivers/vdpa/mlx5/core/mr.o: in function `map_empty':
drivers/vdpa/mlx5/core/mr.c:460: undefined reference to `vhost_iotlb_itree_first'
#
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit...
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 94abbccdf2916cb03f9626f2d36c6e9971490c12
vim +244 drivers/vdpa/mlx5/core/mr.c
225
226 static int map_direct_mr(struct mlx5_vdpa_dev *mvdev, struct mlx5_vdpa_direct_mr
*mr,
227 struct vhost_iotlb *iotlb)
228 {
229 struct vhost_iotlb_map *map;
230 unsigned long lgcd = 0;
231 int log_entity_size;
232 unsigned long size;
233 u64 start = 0;
234 int err;
235 struct page *pg;
236 unsigned int nsg;
237 int sglen;
238 u64 pa;
239 u64 paend;
240 struct scatterlist *sg;
241 struct device *dma = mvdev->mdev->device;
242 int ret;
243
244 for (map = vhost_iotlb_itree_first(iotlb, mr->start,
mr->end - 1);
245 map; map = vhost_iotlb_itree_next(map, start, mr->end - 1)) {
246 size = maplen(map, mr);
247 lgcd = gcd(lgcd, size);
248 start += size;
249 }
250 log_entity_size = ilog2(lgcd);
251
252 sglen = 1 << log_entity_size;
253 nsg = MLX5_DIV_ROUND_UP_POW2(mr->end - mr->start, log_entity_size);
254
255 err = sg_alloc_table(&mr->sg_head, nsg, GFP_KERNEL);
256 if (err)
257 return err;
258
259 sg = mr->sg_head.sgl;
260 for (map = vhost_iotlb_itree_first(iotlb, mr->start,
mr->end - 1);
261 map; map = vhost_iotlb_itree_next(map, mr->start,
mr->end - 1)) {
262 paend = map->addr + maplen(map, mr);
263 for (pa = map->addr; pa < paend; pa += sglen) {
264 pg = pfn_to_page(__phys_to_pfn(pa));
265 if (!sg) {
266 mlx5_vdpa_warn(mvdev, "sg null. start 0x%llx, end 0x%llx\n",
267 map->start, map->last + 1);
268 err = -ENOMEM;
269 goto err_map;
270 }
271 sg_set_page(sg, pg, sglen, 0);
272 sg = sg_next(sg);
273 if (!sg)
274 goto done;
275 }
276 }
277 done:
278 mr->log_size = log_entity_size;
279 mr->nsg = nsg;
280 ret = dma_map_sg_attrs(dma, mr->sg_head.sgl, mr->nsg, DMA_BIDIRECTIONAL,
0);
281 if (!ret)
282 goto err_map;
283
284 err = create_direct_mr(mvdev, mr);
285 if (err)
286 goto err_direct;
287
288 return 0;
289
290 err_direct:
291 dma_unmap_sg_attrs(dma, mr->sg_head.sgl, mr->nsg, DMA_BIDIRECTIONAL, 0);
292 err_map:
293 sg_free_table(&mr->sg_head);
294 return err;
295 }
296
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0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org