Providing a flexible protection model in a computer system by decoupling protection from computer privilege level
US9152785B2 · kind B2 · utility
0Cited by
9References
19Claims
0Family size
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Inventor
Key dates
| Filing date | Jan 30, 2004 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Dec 10, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/62
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and systems for providing a flexible protection model in a computer system by decoupling protection from privilege are described. Information describing a relationship between the two or more domains that define types of protection and portions of code is received. The portions of code with the multiple domains that provide fine granularities of protection can be executed in the same privilege level. The relationship is not required to be linear. In addition, the overhead associated with crossing protection domains is relatively low with respect to traditional operating system context switching overhead.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.