drm/amdgpu: add amdgpu_ttm_bo_eviction_valuable callback

	return res;

}

static bool amdgpu_ttm_bo_eviction_valuable(struct ttm_buffer_object *bo,

					    const struct ttm_place *place)

{

	if (bo->mem.mem_type == TTM_PL_VRAM &&

	    bo->mem.start == AMDGPU_BO_INVALID_OFFSET) {

		unsigned long num_pages = bo->mem.num_pages;

		struct drm_mm_node *node = bo->mem.mm_node;

		/* Check each drm MM node individually */

		while (num_pages) {

			if (place->fpfn < (node->start + node->size) &&

			    !(place->lpfn && place->lpfn <= node->start))

				return true;

			num_pages -= node->size;

			++node;

		}

		return false;

	}

	return ttm_bo_eviction_valuable(bo, place);

}

static struct ttm_bo_driver amdgpu_bo_driver = {

	.ttm_tt_create = &amdgpu_ttm_tt_create,

	.ttm_tt_populate = &amdgpu_ttm_tt_populate,

	.ttm_tt_unpopulate = &amdgpu_ttm_tt_unpopulate,

	.invalidate_caches = &amdgpu_invalidate_caches,

	.init_mem_type = &amdgpu_init_mem_type,

	.eviction_valuable = ttm_bo_eviction_valuable,

	.eviction_valuable = amdgpu_ttm_bo_eviction_valuable,

	.evict_flags = &amdgpu_evict_flags,

	.move = &amdgpu_bo_move,

	.verify_access = &amdgpu_verify_access,