radeon_sync_fence
void radeon_sync_fence(struct radeon_sync *sync,
radeon_sync_fence(&p->ib.sync, bo_va->last_pt_update);
radeon_sync_fence(&ib->sync, vm_id_fence);
radeon_sync_fence(sync, fence);
radeon_sync_fence(&ib.sync, vm->ids[i].last_id_use);