Virtualization of real mode execution
US8127098B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2005 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | Feb 15, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/45533
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a processor is configured to operate in a first mode in which privilege level protection is disabled and paging is enabled. In another embodiment, a method is contemplated including intercepting a write to a control register by a guest executing in a processor; determining that the write attempts to establish a first mode in the processor in which privilege level protection is disabled and paging is disabled; and causing the guest to execute in a second mode in which privilege level protection is disabled and paging is enabled instead of the first mode. A computer accessible medium comprising instruction implementing at least a portion of the method is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.