Your program can use the IARV64 DISCARDDATA request to tell the system that your program no longer needs the data in certain pages and that the system can free them. Optionally, you can use the CLEAR parameter to clear the area to zeros. Also you can optionally use the KEEPREAL parameter to specify whether the real frames backing the pages to be discarded are to be freed or not. The RANGLIST parameter provides a list of page ranges, as shown earlier.

Authorized programs can use the ALETVALUE parameter to specify that the memory objects are in the primary address space or the home address space.