reserve_map
__be64 *reserve_map;
reserve_map = (__be64 *)(((unsigned long)initial_boot_params) +
if (be64_to_cpup(reserve_map) > 0xffffffffull) {
__be32 *reserve_map_32 = (__be32 *)reserve_map;
ret = reserve_map(dev, map, reserved_maps, num_maps, reserve);