diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 9bbaffbd5f6aabc6088b857213f84353c5e7813a..da8b0e15a30c08ffd3d8191f5a9827e0f1ed86e3 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -214,7 +214,35 @@ static void amdgpu_evict_flags(struct ttm_buffer_object *bo, adev->mman.buffer_funcs_ring && adev->mman.buffer_funcs_ring->ready == false) { amdgpu_ttm_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_CPU); + } else if (adev->mc.visible_vram_size < adev->mc.real_vram_size && + !(abo->flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED)) { + unsigned fpfn = adev->mc.visible_vram_size >> PAGE_SHIFT; + struct drm_mm_node *node = bo->mem.mm_node; + unsigned long pages_left; + + for (pages_left = bo->mem.num_pages; + pages_left; + pages_left -= node->size, node++) { + if (node->start < fpfn) + break; + } + + if (!pages_left) + goto gtt; + + /* Try evicting to the CPU inaccessible part of VRAM + * first, but only set GTT as busy placement, so this + * BO will be evicted to GTT rather than causing other + * BOs to be evicted from VRAM + */ + amdgpu_ttm_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_VRAM | + AMDGPU_GEM_DOMAIN_GTT); + abo->placements[0].fpfn = fpfn; + abo->placements[0].lpfn = 0; + abo->placement.busy_placement = &abo->placements[1]; + abo->placement.num_busy_placement = 1; } else { +gtt: amdgpu_ttm_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_GTT); } break;