System for execution context isolation in response to invoking a BIOS kernel function during a driver execution environment (DXE) phase of boot-up of a computer
US8533735B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 30, 2009 |
| Grant date | Sep 10, 2013 |
| Priority date | — |
| Expiry date | Nov 18, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/4411
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Execution context isolation during the DXE phase of computer start-up. Provision is made for referencing and dereferencing execution contexts and thereby providing execution isolation across contexts. In response to invoking a BIOS kernel function during a Driver Execution Environment (DXE) phase of a boot-up of the computer, the BIOS kernel associates a first processor context with the sequence of instructions, determines that scheduling the sequence of instructions requires a switch from a second processor context to the first processor context, performs a context switch action, during the DXE phase of the boot-up of the computer, to switch from the second processor context to the first processor context.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.