Method and apparatus for resetting a physical I/O adapter without stopping a guest OS running on a virtual machine
US8954963B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2012 |
| Grant date | Feb 10, 2015 |
| Priority date | — |
| Expiry date | Feb 18, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2009/45575
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of controlling a virtual machine of a computer, the computer comprising: a physical machine comprising an I/O adapter having a physical function that creates a virtual function; a virtualization unit that provides computer resources of the physical machine to the virtual machine; and an OS that is executed on the virtual machine, the virtualization unit creating a virtual machine to which the virtual function is assigned, the virtual machine running the OS thereon, the method comprising: a first step of detecting, by the virtualization unit, a state change of the I/O adapter; a second step of identifying, by the virtualization unit, when a state of the I/O adapter becomes a predetermined state, the virtual machine to which the virtual function is assigned; and a third step of notifying, by the virtualization unit, the OS running on the identified virtual machine of the state of the I/O adapter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.