Direct injection of a virtual interrupt
US11809349B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2021 |
| Grant date | Nov 7, 2023 |
| Priority date | — |
| Expiry date | Dec 31, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2213/24
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An interposer circuit is used between an interrupt controller and a processor core to facilitate direct injection of a virtual interrupt into a guest executing on the processor core, even though the interrupt controller does not support the direct injection. The interposer circuit can convert a command received from the interrupt controller for a physical interrupt into another command for a virtual interrupt to make the processor core believe that the processor core has received a virtual interrupt even though the interrupt controller is not able to provide the virtual interrupt. The virtual interrupt can be directly injected into the processor core without the intervention of a hypervisor executing on the processor core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.