From: Jérôme Glisse jglisse@redhat.com
Allow userspace to create a virtual address range hole for GEM object.
Signed-off-by: Jérôme Glisse jglisse@redhat.com --- drivers/gpu/drm/nouveau/nouveau_ttm.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c index dff51a0ee028..eafde4c6b7d4 100644 --- a/drivers/gpu/drm/nouveau/nouveau_ttm.c +++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c @@ -172,6 +172,13 @@ nouveau_ttm_mmap(struct file *filp, struct vm_area_struct *vma) if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) return drm_legacy_mmap(filp, vma);
+ /* Hack for HMM */ + if (vma->vm_pgoff < (DRM_FILE_PAGE_OFFSET + (4UL << 30))) { + struct nouveau_cli *cli = file_priv->driver_priv; + + return nouveau_vmm_hmm(cli, filp, vma); + } + return ttm_bo_mmap(filp, vma, &drm->ttm.bdev); }
@@ -305,7 +312,7 @@ nouveau_ttm_init(struct nouveau_drm *drm) drm->ttm.bo_global_ref.ref.object, &nouveau_bo_driver, dev->anon_inode->i_mapping, - DRM_FILE_PAGE_OFFSET, + DRM_FILE_PAGE_OFFSET + (4UL << 30), drm->client.mmu.dmabits <= 32 ? true : false); if (ret) { NV_ERROR(drm, "error initialising bo driver, %d\n", ret);