Method and apparatus for direct input and output in a virtual machine environment containing a guest operating system
US7451249B2 · kind B2 · utility
4Cited by
1References
39Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2006 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Jan 4, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/28
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for allowing a direct memory access unit to have access to a virtual address space is accomplished by receiving a request for memory access from the direct memory access device; determining a device identifier according to the received request for memory access; determining a memory protection schema according to the determined device identifier; and granting the direct memory access unit access to memory in accordance with the determined memory protection schema.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.