Virtual memory management apparatus and memory management apparatus

摘要

A virtual memory management apparatus of an embodiment is embedded in a computing machine 80 and is provided with an application program 21, an operating system 22, a volatile memory 11, and a nonvolatile memory 12. The volatile memory 11 is provided with a plurality of clean pages. The nonvolatile memory 12 is provided with a plurality of dirty pages and a page table memory unit 51. The operating system 22 is provided with a virtual memory management unit 23 which includes a page transfer unit 25.

主权项

1. A virtual memory management apparatus including a primary memory unit and a secondary memory unit having a lower memory access speed than the primary memory unit and having a larger memory capacity than the primary memory unit,
the virtual memory management apparatus comprising: a volatile memory located in the primary memory unit, the volatile memory being configured to store data of a clean page being identical to data stored in the secondary memory unit; and a nonvolatile memory located in the primary memory unit, the nonvolatile memory being configured to store data of a dirty page different from the data stored in the secondary memory unit and having a page table at least including information indicating which page is the dirty page; and a page transfer unit configured to transfer the data of the dirty page to the volatile memory when the data of the dirty page on the nonvolatile memory is to be reflected in the secondary memory unit.