Virtual machine, virtual machine system and method for controlling virtual machine
US8881150B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2012 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | Mar 28, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/102
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In an exemplary computing machine of the invention, a shared IO device used by a first virtual machine and the second virtual machine includes a physical IO device and a virtual IO device controlled by the physical IO device. In the case of detecting that the first driver has transmitted a stop signal for stopping the physical IO device, a hypervisor keeps the stop signal from being transmitted to the shared IO device, determines whether or not a processing request transmitted by the second driver to the virtual IO device has been completed, and stops the physical IO device with the completion of the processing request as a trigger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.