×

Method and system for providing a hardware machine function in a protected virtual machine

  • US 6,253,224 B1
  • Filed: 03/24/1998
  • Issued: 06/26/2001
  • Est. Priority Date: 03/24/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. In a computer system including a hardware machine having an operating system which supervises a plurality of virtual-machine sessions, a method for protecting the operating environment of one or more of said virtual-machine sessions, the method comprising the steps of:

  • defining a plurality of session types for said virtual-machine sessions, including a session type of protected virtual-machine sessions, said protected virtual-machine sessions including program code for implementing a service in support of a defined set of interactions, and a session type of corresponding interacting virtual-machine sessions, said interacting virtual-machine sessions being permitted to interact with said protected virtual-machine sessions to request said service therefrom;

    defining one or more of said protected virtual-machine sessions within the operating system;

    defining one or more of said corresponding interacting virtual-machine sessions within the operating system;

    supervising and enabling the occurrence of said interactions between said defined protected virtual-machine sessions and said defined interacting virtual-machine sessions through the operating system; and

    interrogating the operating environment of said defined protected virtual-machine sessions if said service is requested therefrom to verify the continued integrity of said operating environment.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×