Method and mechanism for efficiently creating large virtual memory pages in a multiple page size environment
US7437529B2 · kind B2 · utility
19Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2005 |
| Grant date | Oct 14, 2008 |
| Priority date | — |
| Expiry date | Apr 20, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/657
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system for efficiently migrating in-use small pages to enable promotion of contiguous small pages into large pages in a memory environment that includes small pages pinned to real memory and/or and small pages mapped to direct memory access (DMA) within real memory. The operating system is designed with a two-phase page promotion engine/utility that enables coalescing contiguous small virtual memory pages to create large virtual memory pages by migrating in-use small memory pages including those that are pinned and/or mapped to DMA.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.