add_physmem_online_range
add_physmem_online_range(0, online_end);
add_physmem_online_range(0, max_physmem_end);
add_physmem_online_range(storage_extents[i].start, storage_extents[i].end + 1);
void add_physmem_online_range(u64 start, u64 end);
add_physmem_online_range((rn - 1) * rzm, rn * rzm);