4:35 a.m.
Hi Eli,
FYI, the error/warning still remains.
tree: https://github.com/alaahl/linux.git for-upstream
head: 7e2972f9d6d90949315c1f55f5b2c825d7401420
commit: d0b0eb15a6014a21c60e860a42550df5be7b5b29 [167/236] vdpa/mlx5: Add shared memory
registration code
config: ia64-allmodconfig (attached as .config)
compiler: ia64-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
git checkout d0b0eb15a6014a21c60e860a42550df5be7b5b29
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=ia64
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 >>):
In file included from arch/ia64/include/asm/ptrace.h:46,
from arch/ia64/include/asm/processor.h:20,
from arch/ia64/include/asm/thread_info.h:12,
from include/linux/thread_info.h:38,
from include/asm-generic/preempt.h:5,
from ./arch/ia64/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:78,
from include/linux/rcupdate.h:27,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from include/linux/ratelimit.h:6,
from include/linux/dev_printk.h:16,
from include/linux/device.h:15,
from include/linux/vdpa.h:6,
from drivers/vdpa/mlx5/core/mr.c:4:
drivers/vdpa/mlx5/core/mr.c: In function 'map_direct_mr':
> drivers/vdpa/mlx5/core/mr.c:264:21: error: implicit declaration
of function '__phys_to_pfn'; did you mean 'page_to_pfn'?
[-Werror=implicit-function-declaration]
264 | pg =
pfn_to_page(__phys_to_pfn(pa));
| ^~~~~~~~~~~~~
arch/ia64/include/asm/page.h:108:40: note: in definition of macro
'pfn_to_page'
108 | # define pfn_to_page(pfn) (vmem_map + (pfn))
| ^~~
cc1: some warnings being treated as errors
vim +264 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
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org