Patent · US Active

System and method for controlling switching between VMM and VM using enabling value of VMM timer indicator and VMM timer value having a specified time

US7840962B2 · kind B2 · utility

13Cited by

203References

18Claims

0Family size

Assignee

Intel Corporation · US

Inventors

Gilbert Neiger · Portland, US
Steven M. Bennett · Hillsboro, US
Erik Cota-Robles · Portland, US
Sebastian Schoenberg · Hillsboro, US
Clifford D. Hall · Folsom, US
Dion Rodgers · Hillsboro, US
Lawrence O. Smith · Beaverton, US
Andrew V. Anderson · Forest Grove, US
Richard Uhlig · Hillsboro, US
Michael Kozuch · Beaverton, US
Andy Glew · Portland, US

Key dates

Filing date	Sep 30, 2004
Grant date	Nov 23, 2010
Priority date	—
Expiry date	Oct 13, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG06F9/45558
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

In one embodiment, a method includes transitioning control to a virtual machine (VM) from a virtual machine monitor (VMM), determining that a VMM timer indicator is set to an enabling value, and identifying a VMM timer value configured by the VMM. The method further includes periodically comparing a current value of a timing source with the VMM timer value, generating an internal event if the current value of the timing source has reached the VMM timer value, and transitioning control to the VMM in response to the internal event without incurring an event handling procedure in any one of the VMM and the VM.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.