VEX-virtual extension framework
US7574709B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2004 |
| Grant date | Aug 11, 2009 |
| Priority date | — |
| Expiry date | Jun 17, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/4401
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Extensions to operating systems or software applications can be hosted in virtual environments to fault isolate the extension. The virtual environment in which extensions designed to control hardware devices can safely execute can be efficiently created during an initial startup sequence of a host environment by indicating to the host environment that a second processing unit is present in the computing system allowing the host environment to create a coherent state. A virtual process, especially a virtual operating system process running on a virtual machine, can be efficiently started by the created coherent state. A coherent state can be created when an operating system starts up and the appropriate parameters are observed and saved. Alternatively, an operating system of the host environment can create the coherent state by receiving indication of the second processing unit during the boot process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.