search for: nouveau_dmem_page_free_locked

...0; addr < end; addr += PAGE_SIZE, i++) { - struct page *spage, *dpage; - - dpage = migrate_pfn_to_page(dst_pfns[i]); - if (!dpage || dst_pfns[i] == MIGRATE_PFN_ERROR) - continue; - - spage = migrate_pfn_to_page(src_pfns[i]); - if (!spage || !(src_pfns[i] & MIGRATE_PFN_MIGRATE)) { - nouveau_dmem_page_free_locked(drm, dpage); - dst_pfns[i] = 0; - continue; - } - - migrate->dma[migrate->dma_nr] = - dma_map_page_attrs(dev, spage, 0, PAGE_SIZE, - PCI_DMA_BIDIRECTIONAL, - DMA_ATTR_SKIP_CPU_SYNC); - if (dma_mapping_error(dev, migrate->dma[migrate->dma_nr])) { - nouveau_dmem_p...

...) continue; - chunk = dpage->zone_device_data; - dst_addr = page_to_pfn(dpage) - chunk->pfn_first; - dst_addr = (dst_addr << PAGE_SHIFT) + chunk->bo->bo.offset; - spage = migrate_pfn_to_page(src_pfns[i]); if (!spage || !(src_pfns[i] & MIGRATE_PFN_MIGRATE)) { nouveau_dmem_page_free_locked(drm, dpage); @@ -716,10 +712,10 @@ nouveau_dmem_migrate_alloc_and_copy(struct vm_area_struct *vma, continue; } - src_addr = migrate->dma[migrate->dma_nr++]; - - ret = copy(drm, 1, NOUVEAU_APER_VRAM, dst_addr, - NOUVEAU_APER_HOST, src_addr); + ret = copy(drm, 1, NOUVEAU_APER_...

...ate->dma[migrate->dma_nr] = - dma_map_page_attrs(dev, spage, 0, PAGE_SIZE, - PCI_DMA_BIDIRECTIONAL, - DMA_ATTR_SKIP_CPU_SYNC); + dma_map_page(dev, spage, 0, PAGE_SIZE, + PCI_DMA_BIDIRECTIONAL); if (dma_mapping_error(dev, migrate->dma[migrate->dma_nr])) { nouveau_dmem_page_free_locked(drm, dpage); dst_pfns[i] = 0; -- 2.20.1

Hi Jérôme, Ben and Jason, below is a series against the hmm tree which starts revamping the migrate_vma functionality. The prime idea is to export three slightly lower level functions and thus avoid the need for migrate_vma_ops callbacks. Diffstat: 5 files changed, 281 insertions(+), 607 deletions(-) A git tree is also available at: git://git.infradead.org/users/hch/misc.git

Hi Jérôme, Ben and Jason, below is a series against the hmm tree which starts revamping the migrate_vma functionality. The prime idea is to export three slightly lower level functions and thus avoid the need for migrate_vma_ops callbacks. Diffstat: 4 files changed, 285 insertions(+), 602 deletions(-) A git tree is also available at: git://git.infradead.org/users/hch/misc.git

...t; NVIF_VMM_PFNMAP_V0_ADDR_SHIFT); + if (src & MIGRATE_PFN_WRITE) + *pfn |= NVIF_VMM_PFNMAP_V0_W; return migrate_pfn(page_to_pfn(dpage)) | MIGRATE_PFN_LOCKED; out_dma_unmap: @@ -590,18 +597,19 @@ static unsigned long nouveau_dmem_migrate_copy_one(struct nouveau_drm *drm, out_free_page: nouveau_dmem_page_free_locked(drm, dpage); out: + *pfn = NVIF_VMM_PFNMAP_V0_NONE; return 0; } static void nouveau_dmem_migrate_chunk(struct migrate_vma *args, - struct nouveau_drm *drm, dma_addr_t *dma_addrs) + struct nouveau_drm *drm, dma_addr_t *dma_addrs, u64 *pfns) { struct nouveau_fence *fence; unsigned long...

Hi Jérôme, Ben and Jason, below is a series against the hmm tree which starts revamping the migrate_vma functionality. The prime idea is to export three slightly lower level functions and thus avoid the need for migrate_vma_ops callbacks. Diffstat: 7 files changed, 282 insertions(+), 614 deletions(-) A git tree is also available at: git://git.infradead.org/users/hch/misc.git

...+ if (src & MIGRATE_PFN_WRITE) > + *pfn |= NVIF_VMM_PFNMAP_V0_W; > return migrate_pfn(page_to_pfn(dpage)) | MIGRATE_PFN_LOCKED; > > out_dma_unmap: > @@ -590,18 +597,19 @@ static unsigned long nouveau_dmem_migrate_copy_one(struct nouveau_drm *drm, > out_free_page: > nouveau_dmem_page_free_locked(drm, dpage); > out: > + *pfn = NVIF_VMM_PFNMAP_V0_NONE; > return 0; > } > > static void nouveau_dmem_migrate_chunk(struct migrate_vma *args, > - struct nouveau_drm *drm, dma_addr_t *dma_addrs) > + struct nouveau_drm *drm, dma_addr_t *dma_addrs, u64 *pfns) > { &g...

...t; NVIF_VMM_PFNMAP_V0_ADDR_SHIFT); + if (src & MIGRATE_PFN_WRITE) + *pfn |= NVIF_VMM_PFNMAP_V0_W; return migrate_pfn(page_to_pfn(dpage)) | MIGRATE_PFN_LOCKED; out_dma_unmap: @@ -587,18 +594,19 @@ static unsigned long nouveau_dmem_migrate_copy_one(struct nouveau_drm *drm, out_free_page: nouveau_dmem_page_free_locked(drm, dpage); out: + *pfn = NVIF_VMM_PFNMAP_V0_NONE; return 0; } static void nouveau_dmem_migrate_chunk(struct nouveau_drm *drm, - struct migrate_vma *args, dma_addr_t *dma_addrs) + struct migrate_vma *args, dma_addr_t *dma_addrs, u64 *pfns) { struct nouveau_fence *fence; unsigned long...

Originally patch 4 was targeted for Jason's rdma tree since other HMM related changes were queued there. Now that those have been merged, these patches just contain changes to nouveau so they could go through any tree. I guess Ben Skeggs' tree would be appropriate. Changes since v2: Added patches 1-3 to fix some minor issues. Eliminated nouveau_find_svmm() since it is easily found.

hmm_range_fault() returns an array of page frame numbers and flags for how the pages are mapped in the requested process' page tables. The PFN can be used to get the struct page with hmm_pfn_to_page() and the page size order can be determined with compound_order(page) but if the page is larger than order 0 (PAGE_SIZE), there is no indication that the page is mapped using a larger page size. To

This series adds support for transparent huge page migration to migrate_vma_*() and adds nouveau SVM and HMM selftests as consumers. Earlier versions were posted previously [1] and [2]. The patches apply cleanly to the linux-mm 5.10.0-rc2 tree. There are a lot of other THP patches being posted. I don't think there are any semantic conflicts but there may be some merge conflicts depending on

This series adds support for transparent huge page migration to migrate_vma_*() and adds nouveau SVM and HMM selftests as consumers. An earlier version was posted previously [1]. This version now supports splitting a THP midway in the migration process which led to a number of changes. The patches apply cleanly to the current linux-mm tree. Since there are a couple of patches in linux-mm from Dan

These patches apply to linux-5.8.0-rc1. Patches 1-3 should probably go into 5.8, the others can be queued for 5.9. Patches 4-6 improve the HMM self tests. Patch 7-8 prepare nouveau for the meat of this series which adds support and testing for compound page mapping of system memory (patches 9-11) and compound page migration to device private memory (patches 12-16). Since these changes are split