Patent ID: 8990525
Filing Date: 2015-03-24
Classification: G06F,G11C

Abstract:
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; 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 clean page to the nonvolatile memory when data is written to the clean page on the volatile memory.