Reducing the latency of virtual interrupt delivery in virtual machines
US8453143B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2007 |
| Grant date | May 28, 2013 |
| Priority date | — |
| Expiry date | Oct 31, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2009/45575
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The latency of virtual interrupt delivery in virtual machines is reduced by normalizing and exposing the virtual interrupt routing information of each VM to a privileged domain such as the VMkernel in an organized manner to enable virtual interrupt delivery that minimizes the number of VCPU hops. A computer implemented method of processing the virtual I/O request comprises receiving the virtual I/O request, responsive to completing a physical I/O corresponding to the virtual I/O request, referring to a virtual CPU set including information on a destination virtual CPU designated by the guest operating system for handling a virtual interrupt corresponding to the virtual I/O request, and generating the virtual interrupt corresponding to the virtual I/O request to the destination virtual CPU determined by referring to the virtual CPU set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.