Patent · US Active

Processor extensions to identify and avoid tracking conflicts between virtual machine monitor and guest virtual machine

US10180854B2 · kind B2 · utility

1Cited by

1References

18Claims

0Family size

Assignee

Intel Corporation · US

Inventors

Rebekah M. Leslie-Hurd · Portland, US
Carlos V. Rozas · Portland, US
Dror Caspi · Kiryat Yam, IL

Key dates

Filing date	Sep 28, 2016
Grant date	Jan 15, 2019
Priority date	—
Expiry date	Jun 21, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG06F2212/68
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A processing system includes an execution unit, communicatively coupled to an architecturally-protected memory, the execution unit comprising a logic circuit to execute a virtual machine monitor (VMM) that supports a virtual machine (VM) comprising a guest operating system (OS) and to implement an architecturally-protected execution environment, wherein the logic circuit is to responsive to executing a blocking instruction by the guest OS directed at a first page stored in the architecturally-protected memory during a first time period identified by a value stored in a first counter, copy the value from the first counter to a second counter, responsive to executing a first tracking instruction issued by the VMM, increment the value stored in the first counter, and set a flag to indicate successful execution of the second tracking instruction.

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