Guest/hypervisor interrupt coalescing for storage adapter virtual function in guest passthrough mode
US8392623B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 2012 |
| Grant date | Mar 5, 2013 |
| Priority date | — |
| Expiry date | May 30, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2009/45579
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method is described for coalescing input/output (IO) interrupts to a virtual machine (VM) running on a host computer. At a virtualization layer of the host computer that supports execution of the VM receives an IO interrupt in response to a completion of an IO request of the VM, wherein a transmission of the IO request by the VM to an IO device bypasses the virtualization layer. The virtualization layer then determines whether the VM has responded to a most recently delivered IO interrupt to the VM by the virtualization layer, and drops the IO interrupt if the VM has not responded to the most recently delivered IO interrupt, thereby failing to deliver the IO interrupt to the VM.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.