Method and apparatus for managing copy on write operations in a virtual memory

Mapping Table Index Size (bits)

{ 1 Object-Oriented Virtual Memory Scheme (Details)

Page address Y\G 3

217 index Doubly linked list of all MORs that refer to this NSKMPage data structure

NumDupRefs (number of MORs that refer to this NSKMPage data structure and have a VCState other than VCOriginal)

Location of the page corresponding to this NSKMPage data structure

Format of NSKMPage Data Structure

FIG. 5 Pointer to PMO that is associated with this mapping table

Forward pointer for singly linked list of all mapping tables associated with the PMO that is associated with this mapping table

Array of pointers for pages (or next lower mapping tables)

Format of Mapping Table

FIG. 6