Device allocation changing method
US8028184B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2008 |
| Grant date | Sep 27, 2011 |
| Priority date | — |
| Expiry date | Feb 14, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2009/45579
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Switching of the allocation of a device to a guest OS is implemented through transmission of a virtual suspension interrupt to a guest OS in a VMM; a power control notification process module that causes the guest OS to start a return process from a suspended state; a guest power process module that traps a suspension process of the guest OS; an I/O configuration change process module that updates a logical device definition of the VMM in the suspended state of the guest OS; a guest I/O emulation process module that emulates an I/O instruction that is issued by an I/O reconfiguration process module and that is executed when the guest OS has returned from the suspended state, thereby to provide a new logical device configuration to the guest OS.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.