tree: git://git.infradead.org/users/hch/misc.git hmm-headers head: eacffa71b75f2486263f460f97583c2198f9a830 commit: eacffa71b75f2486263f460f97583c2198f9a830 [1/1] hmm: remove unneeded #includes config: powerpc-allyesconfig (attached as .config) compiler: powerpc64-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 eacffa71b75f2486263f460f97583c2198f9a830 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>): 141 | struct vm_fault *vmf, struct migrate_vma *args, | ^~~~~~~~~~~ drivers/gpu/drm/nouveau/nouveau_dmem.c: In function 'nouveau_dmem_fault_copy_one': 148 | spage = migrate_pfn_to_page(args->src[0]); | ^~~~~~~~~~~~~~~~~~~ | hmm_pfn_to_page 148 | spage = migrate_pfn_to_page(args->src[0]); | ^~ 149 | if (!spage || !(args->src[0] & MIGRATE_PFN_MIGRATE)) | ^~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:149:33: note: each undeclared identifier is reported only once for each function it appears in 169 | args->dst[0] = migrate_pfn(page_to_pfn(dpage)) | MIGRATE_PFN_LOCKED; | ^~~~~~~~~~~ 169 | args->dst[0] = migrate_pfn(page_to_pfn(dpage)) | MIGRATE_PFN_LOCKED; | ^~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/nouveau_dmem.c: In function 'nouveau_dmem_migrate_to_ram': 188 | struct migrate_vma args = { | ^~~~~~~~~~~ 189 | .vma = vmf->vma, | ^~~ 189 | .vma = vmf->vma, | ^~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:189:11: note: (near initialization for 'args') 190 | .start = vmf->address, | ^~~~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:190:13: warning: excess elements in struct initializer 190 | .start = vmf->address, | ^~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:190:13: note: (near initialization for 'args') 191 | .end = vmf->address + PAGE_SIZE, | ^~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:191:11: warning: excess elements in struct initializer 191 | .end = vmf->address + PAGE_SIZE, | ^~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:191:11: note: (near initialization for 'args') 192 | .src = &src, | ^~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:192:11: warning: excess elements in struct initializer 192 | .src = &src, | ^ drivers/gpu/drm/nouveau/nouveau_dmem.c:192:11: note: (near initialization for 'args') 193 | .dst = &dst, | ^~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:193:11: warning: excess elements in struct initializer 193 | .dst = &dst, | ^ drivers/gpu/drm/nouveau/nouveau_dmem.c:193:11: note: (near initialization for 'args') 194 | .pgmap_owner = drm->dev, | ^~~~~~~~~~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:194:18: warning: excess elements in struct initializer 194 | .pgmap_owner = drm->dev, | ^~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:194:18: note: (near initialization for 'args') 195 | .flags = MIGRATE_VMA_SELECT_DEVICE_PRIVATE, | ^~~~~ 195 | .flags = MIGRATE_VMA_SELECT_DEVICE_PRIVATE, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:195:13: warning: excess elements in struct initializer drivers/gpu/drm/nouveau/nouveau_dmem.c:195:13: note: (near initialization for 'args') 188 | struct migrate_vma args = { | ^~~~ 203 | if (migrate_vma_setup(&args) < 0) | ^~~~~~~~~~~~~~~~~ 213 | migrate_vma_pages(&args); | ^~~~~~~~~~~~~~~~~ | is_migrate_cma_page 217 | migrate_vma_finalize(&args); | ^~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:188:21: warning: unused variable 'args' [-Wunused-variable] 188 | struct migrate_vma args = { | ^~~~ drivers/gpu/drm/nouveau/nouveau_dmem.c: In function 'nouveau_dmem_migrate_copy_one': drivers/gpu/drm/nouveau/nouveau_dmem.c:575:8: warning: assignment to 'struct page *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 575 | spage = migrate_pfn_to_page(src); | ^ drivers/gpu/drm/nouveau/nouveau_dmem.c:576:14: error: 'MIGRATE_PFN_MIGRATE' undeclared (first use in this function) 576 | if (!(src & MIGRATE_PFN_MIGRATE)) | ^~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:602:12: error: 'MIGRATE_PFN_WRITE' undeclared (first use in this function) 602 | if (src & MIGRATE_PFN_WRITE) | ^~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:604:43: error: 'MIGRATE_PFN_LOCKED' undeclared (first use in this function) 604 | return migrate_pfn(page_to_pfn(dpage)) | MIGRATE_PFN_LOCKED; | ^~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/nouveau_dmem.c: At top level: drivers/gpu/drm/nouveau/nouveau_dmem.c:616:37: warning: 'struct migrate_vma' declared inside parameter list will not be visible outside of this definition or declaration 616 | struct nouveau_svmm *svmm, struct migrate_vma *args, | ^~~~~~~~~~~ drivers/gpu/drm/nouveau/nouveau_dmem.c: In function 'nouveau_dmem_migrate_chunk': drivers/gpu/drm/nouveau/nouveau_dmem.c:620:27: error: dereferencing pointer to incomplete type 'struct migrate_vma' 620 | unsigned long addr = args->start, nr_dma = 0, i; | ^~ drivers/gpu/drm/nouveau/nouveau_dmem.c: In function 'nouveau_dmem_migrate_vma': drivers/gpu/drm/nouveau/nouveau_dmem.c:652:9: error: variable 'args' has initializer but incomplete type 652 | struct migrate_vma args = { | ^~~~~~~~~~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:653:4: error: 'struct migrate_vma' has no member named 'vma' 653 | .vma = vma, | ^~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:653:11: warning: excess elements in struct initializer 653 | .vma = vma, | ^~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:653:11: note: (near initialization for 'args') drivers/gpu/drm/nouveau/nouveau_dmem.c:654:4: error: 'struct migrate_vma' has no member named 'start' 654 | .start = start, | ^~~~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:654:13: warning: excess elements in struct initializer 654 | .start = start, | ^~~~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:654:13: note: (near initialization for 'args') drivers/gpu/drm/nouveau/nouveau_dmem.c:655:4: error: 'struct migrate_vma' has no member named 'pgmap_owner' 655 | .pgmap_owner = drm->dev, | ^~~~~~~~~~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:655:18: warning: excess elements in struct initializer 655 | .pgmap_owner = drm->dev, | ^~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:655:18: note: (near initialization for 'args') drivers/gpu/drm/nouveau/nouveau_dmem.c:656:4: error: 'struct migrate_vma' has no member named 'flags' 656 | .flags = MIGRATE_VMA_SELECT_SYSTEM, | ^~~~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:656:13: error: 'MIGRATE_VMA_SELECT_SYSTEM' undeclared (first use in this function) 656 | .flags = MIGRATE_VMA_SELECT_SYSTEM, | ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:656:13: warning: excess elements in struct initializer drivers/gpu/drm/nouveau/nouveau_dmem.c:656:13: note: (near initialization for 'args') drivers/gpu/drm/nouveau/nouveau_dmem.c:652:21: error: storage size of 'args' isn't known 652 | struct migrate_vma args = { | ^~~~ drivers/gpu/drm/nouveau/nouveau_dmem.c:652:21: warning: unused variable 'args' [-Wunused-variable] cc1: some warnings being treated as errors git remote add hch-misc git://git.infradead.org/users/hch/misc.git git fetch --no-tags hch-misc hmm-headers git checkout eacffa71b75f2486263f460f97583c2198f9a830 vim +148 drivers/gpu/drm/nouveau/nouveau_dmem.c 2ab2bda53c986a9 Christoph Hellwig 2019-08-14 139 bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 140 static vm_fault_t nouveau_dmem_fault_copy_one(struct nouveau_drm *drm, bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 @141 struct vm_fault *vmf, struct migrate_vma *args, bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 142 dma_addr_t *dma_addr) 5be73b690875f7e Jérôme Glisse 2018-07-26 143 { a788ade4f6e0302 Ben Skeggs 2019-02-15 144 struct device *dev = drm->dev->dev; 5be73b690875f7e Jérôme Glisse 2018-07-26 145 struct page *dpage, *spage; f8477ce6b5923ef Ralph Campbell 2020-07-23 146 struct nouveau_svmm *svmm; 5be73b690875f7e Jérôme Glisse 2018-07-26 147 bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 @148 spage = migrate_pfn_to_page(args->src[0]); bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 @149 if (!spage || !(args->src[0] & MIGRATE_PFN_MIGRATE)) bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 150 return 0; 5be73b690875f7e Jérôme Glisse 2018-07-26 151 bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 152 dpage = alloc_page_vma(GFP_HIGHUSER, vmf->vma, vmf->address); bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 153 if (!dpage) bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 154 return VM_FAULT_SIGBUS; 721be868142cb95 Christoph Hellwig 2019-06-26 155 lock_page(dpage); 5be73b690875f7e Jérôme Glisse 2018-07-26 156 bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 157 *dma_addr = dma_map_page(dev, dpage, 0, PAGE_SIZE, DMA_BIDIRECTIONAL); bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 158 if (dma_mapping_error(dev, *dma_addr)) bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 159 goto error_free_page; 5be73b690875f7e Jérôme Glisse 2018-07-26 160 f8477ce6b5923ef Ralph Campbell 2020-07-23 161 svmm = spage->zone_device_data; f8477ce6b5923ef Ralph Campbell 2020-07-23 162 mutex_lock(&svmm->mutex); f8477ce6b5923ef Ralph Campbell 2020-07-23 163 nouveau_svmm_invalidate(svmm, args->start, args->end); bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 164 if (drm->dmem->migrate.copy_func(drm, 1, NOUVEAU_APER_HOST, *dma_addr, bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 165 NOUVEAU_APER_VRAM, nouveau_dmem_page_addr(spage))) bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 166 goto error_dma_unmap; f8477ce6b5923ef Ralph Campbell 2020-07-23 167 mutex_unlock(&svmm->mutex); 5be73b690875f7e Jérôme Glisse 2018-07-26 168 bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 @169 args->dst[0] = migrate_pfn(page_to_pfn(dpage)) | MIGRATE_PFN_LOCKED; bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 170 return 0; a788ade4f6e0302 Ben Skeggs 2019-02-15 171 bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 172 error_dma_unmap: f8477ce6b5923ef Ralph Campbell 2020-07-23 173 mutex_unlock(&svmm->mutex); bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 174 dma_unmap_page(dev, *dma_addr, PAGE_SIZE, DMA_BIDIRECTIONAL); bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 175 error_free_page: 5be73b690875f7e Jérôme Glisse 2018-07-26 176 __free_page(dpage); bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 177 return VM_FAULT_SIGBUS; 5be73b690875f7e Jérôme Glisse 2018-07-26 178 } 5be73b690875f7e Jérôme Glisse 2018-07-26 179 4239f267e3cd31e Christoph Hellwig 2019-06-26 180 static vm_fault_t nouveau_dmem_migrate_to_ram(struct vm_fault *vmf) 5be73b690875f7e Jérôme Glisse 2018-07-26 181 { 1d7f940c3a16623 Ralph Campbell 2020-04-21 182 struct nouveau_drm *drm = page_to_drm(vmf->page); 1d7f940c3a16623 Ralph Campbell 2020-04-21 183 struct nouveau_dmem *dmem = drm->dmem; bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 184 struct nouveau_fence *fence; bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 185 unsigned long src = 0, dst = 0; bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 186 dma_addr_t dma_addr = 0; bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 187 vm_fault_t ret; a7d1f22bb74f32c Christoph Hellwig 2019-08-14 @188 struct migrate_vma args = { a7d1f22bb74f32c Christoph Hellwig 2019-08-14 @189 .vma = vmf->vma, a7d1f22bb74f32c Christoph Hellwig 2019-08-14 @190 .start = vmf->address, a7d1f22bb74f32c Christoph Hellwig 2019-08-14 @191 .end = vmf->address + PAGE_SIZE, bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 @192 .src = &src, bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 @193 .dst = &dst, 5143192cd410c4f Ralph Campbell 2020-07-23 @194 .pgmap_owner = drm->dev, 5143192cd410c4f Ralph Campbell 2020-07-23 @195 .flags = MIGRATE_VMA_SELECT_DEVICE_PRIVATE, a7d1f22bb74f32c Christoph Hellwig 2019-08-14 196 }; 5be73b690875f7e Jérôme Glisse 2018-07-26 197 5be73b690875f7e Jérôme Glisse 2018-07-26 198 /* 5be73b690875f7e Jérôme Glisse 2018-07-26 199 * FIXME what we really want is to find some heuristic to migrate more 5be73b690875f7e Jérôme Glisse 2018-07-26 200 * than just one page on CPU fault. When such fault happens it is very 5be73b690875f7e Jérôme Glisse 2018-07-26 201 * likely that more surrounding page will CPU fault too. 5be73b690875f7e Jérôme Glisse 2018-07-26 202 */ a7d1f22bb74f32c Christoph Hellwig 2019-08-14 @203 if (migrate_vma_setup(&args) < 0) 5be73b690875f7e Jérôme Glisse 2018-07-26 204 return VM_FAULT_SIGBUS; a7d1f22bb74f32c Christoph Hellwig 2019-08-14 205 if (!args.cpages) a7d1f22bb74f32c Christoph Hellwig 2019-08-14 206 return 0; a7d1f22bb74f32c Christoph Hellwig 2019-08-14 207 bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 208 ret = nouveau_dmem_fault_copy_one(drm, vmf, &args, &dma_addr); bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 209 if (ret || dst == 0) bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 210 goto done; 5be73b690875f7e Jérôme Glisse 2018-07-26 211 bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 212 nouveau_fence_new(dmem->migrate.chan, false, &fence); bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 @213 migrate_vma_pages(&args); bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 214 nouveau_dmem_fence_done(&fence); bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 215 dma_unmap_page(drm->dev->dev, dma_addr, PAGE_SIZE, DMA_BIDIRECTIONAL); bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 216 done: a7d1f22bb74f32c Christoph Hellwig 2019-08-14 @217 migrate_vma_finalize(&args); bfe69ef94aeeae7 Christoph Hellwig 2019-08-14 218 return ret; 5be73b690875f7e Jérôme Glisse 2018-07-26 219 } 5be73b690875f7e Jérôme Glisse 2018-07-26 220 :::::: The code at line 148 was first introduced by commit :::::: bfe69ef94aeeae76531b8f37799b8ac6fca56957 nouveau: simplify nouveau_dmem_migrate_to_ram :::::: TO: Christoph Hellwig <hch(a)lst.de&gt; :::::: CC: Jason Gunthorpe <jgg(a)mellanox.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org