Method, system, and computer program product for migrating data from one real page to another

摘要

A system, method, and computer program product are disclosed for migrating real pages. A real page of data is established. Virtual addresses that are associated with the real addresses that are included within the real page are generated. A mapping table is established that includes mappings of the virtual addresses to these real addresses. A routine is executed that accesses the mapping table to obtain the mappings of virtual addresses to real addresses. The routine utilizes the virtual addresses to access the data that is stored in the real page. While the routine is executing, the data is migrated from the real page to a new real page. The mapping table is then updated while the routine is executing so that the routine utilizes the same virtual addresses to access the data that is now stored in the new real page. Execution of the routine continues while the mapping table is being updated.