Patents by Inventor Frederick Joseph Jacobs

Frederick Joseph Jacobs has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Isolating guest code and data using multiple nested page tables
    Patent number: 9870324
    Abstract: A hypervisor provides a guest operating system with a plurality of protection domains, including a root protection domain and one or more secure protection domains, and mechanisms for controlling the transitions between the protection domains. The guest physical memory region of a secure protection domain, which is mapped to host physical memory by secure nested page tables, stores secure guest code and data, and guest page tables for the secure guest code. When executing secure guest code, the guest page tables stored in the secure protection domain region are used for guest virtual to guest physical address translations, and the secure nested page tables are used for guest physical to host physical address translations.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: January 16, 2018
    Assignee: VMware, Inc.
    Inventors: James S. Mattson, Jr., Rakesh Agarwal, Alok Nemchand Kataria, Wei Xu, Frederick Joseph Jacobs
  • ISOLATING GUEST CODE AND DATA USING MULTIPLE NESTED PAGE TABLES
    Publication number: 20160299851
    Abstract: A hypervisor provides a guest operating system with a plurality of protection domains, including a root protection domain and one or more secure protection domains, and mechanisms for controlling the transitions between the protection domains. The guest physical memory region of a secure protection domain, which is mapped to host physical memory by secure nested page tables, stores secure guest code and data, and guest page tables for the secure guest code. When executing secure guest code, the guest page tables stored in the secure protection domain region are used for guest virtual to guest physical address translations, and the secure nested page tables are used for guest physical to host physical address translations.
    Type: Application
    Filed: July 14, 2015
    Publication date: October 13, 2016
    Inventors: James S. Mattson, JR., Rakesh Agarwal, Alok Nemchand Kataria, Wei Xu, Frederick Joseph Jacobs