drm/amdgpu: stop crashing on GDS/GWS/OA eviction

Simply ignore any copying here.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 1565344..c81b35d 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -256,6 +256,13 @@ static void amdgpu_evict_flags(struct ttm_buffer_object *bo,
 
        abo = ttm_to_amdgpu_bo(bo);
        switch (bo->mem.mem_type) {
+       case AMDGPU_PL_GDS:
+       case AMDGPU_PL_GWS:
+       case AMDGPU_PL_OA:
+               placement->num_placement = 0;
+               placement->num_busy_placement = 0;
+               return;
+
        case TTM_PL_VRAM:
                if (!adev->mman.buffer_funcs_enabled) {
                        /* Move to system memory */
@@ -283,6 +290,7 @@ static void amdgpu_evict_flags(struct ttm_buffer_object *bo,
        case TTM_PL_TT:
        default:
                amdgpu_bo_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_CPU);
+               break;
        }
        *placement = abo->placement;
 }
@@ -675,6 +683,16 @@ static int amdgpu_bo_move(struct ttm_buffer_object *bo, bool evict,
                amdgpu_move_null(bo, new_mem);
                return 0;
        }
+       if (old_mem->mem_type == AMDGPU_PL_GDS ||
+           old_mem->mem_type == AMDGPU_PL_GWS ||
+           old_mem->mem_type == AMDGPU_PL_OA ||
+           new_mem->mem_type == AMDGPU_PL_GDS ||
+           new_mem->mem_type == AMDGPU_PL_GWS ||
+           new_mem->mem_type == AMDGPU_PL_OA) {
+               /* Nothing to save here */
+               amdgpu_move_null(bo, new_mem);
+               return 0;
+       }
 
        if (!adev->mman.buffer_funcs_enabled)
                goto memcpy;