This reverts commit 
a213c2c7e235cfc0e0a161a558f7fdf2fb3a624a.
The changes to fix this should have landed in 5.1.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Zhou, David(ChunMing) <David1.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
        struct ttm_bo_global *glob = adev->mman.bdev.glob;
        struct amdgpu_vm_bo_base *bo_base;
 
-#if 0
        if (vm->bulk_moveable) {
                spin_lock(&glob->lru_lock);
                ttm_bo_bulk_move_lru_tail(&vm->lru_bulk_move);
                spin_unlock(&glob->lru_lock);
                return;
        }
-#endif
 
        memset(&vm->lru_bulk_move, 0, sizeof(vm->lru_bulk_move));