drm/amdgpu: add option to clear VM page tables after every submit

This makes it much easier to find when userspace misses to send some buffers.

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

1 files changed, 16 insertions, 1 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index 29fc45ce64dd..25012c790f8f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -567,9 +567,24 @@ static int amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser *p,
                         if (r)
                                 return r;
                 }
+
+        }
+
+        r = amdgpu_vm_clear_invalids(adev, vm, &p->ibs[0].sync);
+
+        if (amdgpu_vm_debug && p->bo_list) {
+                /* Invalidate all BOs to test for userspace bugs */
+                for (i = 0; i < p->bo_list->num_entries; i++) {
+                        /* ignore duplicates */
+                        bo = p->bo_list->array[i].robj;
+                        if (!bo)
+                                continue;
+
+                        amdgpu_vm_bo_invalidate(adev, bo);
+                }
         }
 
-        return amdgpu_vm_clear_invalids(adev, vm, &p->ibs[0].sync);
+        return r;
 }
 
 static int amdgpu_cs_ib_vm_chunk(struct amdgpu_device *adev,