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| author | Ralph Campbell <rcampbell@nvidia.com> | 2020-03-03 16:13:39 -0800 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2020-05-22 11:13:49 +1000 |
| commit | e3d8b08904694e9ccae5163d0bb7d35fa66e5bdc (patch) | |
| tree | 8f7d8263200f78977c57bd1bf3f32c1123bfc6ca /drivers/gpu/drm/nouveau/nouveau_dmem.h | |
| parent | 9c1c08a68dcdea3a933948b4e7927bdbc56aac4c (diff) | |
| download | linux-stable-e3d8b08904694e9ccae5163d0bb7d35fa66e5bdc.tar.gz linux-stable-e3d8b08904694e9ccae5163d0bb7d35fa66e5bdc.tar.bz2 linux-stable-e3d8b08904694e9ccae5163d0bb7d35fa66e5bdc.zip | |
drm/nouveau/svm: map pages after migration
When memory is migrated to the GPU, it is likely to be accessed by GPU
code soon afterwards. Instead of waiting for a GPU fault, map the
migrated memory into the GPU page tables with the same access permissions
as the source CPU page table entries. This preserves copy on write
semantics.
Signed-off-by: Ralph Campbell <rcampbell@nvidia.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Cc: "Jérôme Glisse" <jglisse@redhat.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_dmem.h')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_dmem.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_dmem.h b/drivers/gpu/drm/nouveau/nouveau_dmem.h index 92394be5d649..3e03d9629a38 100644 --- a/drivers/gpu/drm/nouveau/nouveau_dmem.h +++ b/drivers/gpu/drm/nouveau/nouveau_dmem.h @@ -25,6 +25,7 @@ struct drm_device; struct drm_file; struct nouveau_drm; +struct nouveau_svmm; struct hmm_range; #if IS_ENABLED(CONFIG_DRM_NOUVEAU_SVM) @@ -34,6 +35,7 @@ void nouveau_dmem_suspend(struct nouveau_drm *); void nouveau_dmem_resume(struct nouveau_drm *); int nouveau_dmem_migrate_vma(struct nouveau_drm *drm, + struct nouveau_svmm *svmm, struct vm_area_struct *vma, unsigned long start, unsigned long end); |