Processor that maintains virtual interrupt state and injects virtual interrupts into virtual machine guests
US7209994B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2005 |
| Grant date | Apr 24, 2007 |
| Priority date | — |
| Expiry date | Sep 22, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/45533
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a processor comprises one or more registers and a control unit. The registers are configured to store interrupt state describing a virtual interrupt. The control unit is configured to initiate the virtual interrupt responsive to the interrupt state. In another embodiment, a method comprises storing an interrupt state describing a virtual interrupt in a storage area allocated to a guest. A processor initiates the virtual interrupt subsequent to initiating execution of the guest, responsive to the interrupt state. In still another embodiment, a computer accessible medium stores a plurality of instructions comprising instructions which, when executed on a processor in response to a physical interrupt: determine a guest into which a virtual interrupt corresponding to the physical interrupt is to be injected; and store an interrupt state describing the virtual interrupt in a storage area allocated to the guest.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.