Electronically addressed non-volatile memory-based kernel data cache
US8122182B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 13, 2009 |
| Grant date | Feb 21, 2012 |
| Priority date | — |
| Expiry date | Apr 30, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/2022
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An operating system on a computer system can comprise a user space, which can comprise a persistent data store, and a kernel space, which can be extended by loading kernel modules. As provided herein, the kernel space can utilize kernel designated electronically addressed non-volatile memory (e.g., flash memory) to cache data from the user space persistent store, for example, upon a boot event. The kernel space can further comprise a cache controller that can be used to populate the kernel electronically addressed non-volatile memory with kernel in-memory data caches that comprise user space persistently stored data. In one embodiment, the kernel space can further comprise kernel designated volatile main memory (e.g., RAM), which can be used in conjunction with the kernel electronically addressed non-volatile memory to cache user space persistently stored data. In this way, kernel modules may access user space persistent store data from the RAM and/or electronically addressed non-volatile kernel cache.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.