Intel Corporation
DYNAMIC MULTILEVEL MEMORY SYSTEM

Abstract:

A system can dynamically migrate memory pages from near memory to far memory during runtime. A system basic input output system (BIOS) can program a first memory address space of size P and a second memory address space of size P to a near memory (NM) space of size (N) and a far memory (FM) space of size (M), where P equals N+M. For the first memory address space, the OS can manage the NM space and the FM space as a flat memory space with an address space of size P available. For the second memory address space, the OS can manage the NM space as a NM cache for FM, with an address space of size M available.