Patents by Inventor Ranjit Joseph Rozario

Ranjit Joseph Rozario 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).

  • Embedded processor with virtualized security controls using guest identifications, a common kernel address space and operational permissions
    Patent number: 10162659
    Abstract: A method includes assigning unique guest identifications to different guests, specifying an address region and permissions for the different guests and controlling a guest jump from one physical memory segment to a second physical memory segment through operational permissions defined in a root memory management unit that supports guest isolation and protection.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: December 25, 2018
    Assignee: ARM Finance Overseas Limited
    Inventors: Sanjay Patel, Ranjit Joseph Rozario
  • EMBEDDED PROCESSOR WITH VIRTUALIZED SECURITY CONTROLS USING GUEST IDENTIFICATIONS, A COMMON KERNEL ADDRESS SPACE AND OPERATIONAL PERMISSIONS
    Publication number: 20160077866
    Abstract: A method includes assigning unique guest identifications to different guests, specifying an address region and permissions for the different guests and controlling a guest jump from one physical memory segment to a second physical memory segment through operational permissions defined in a root memory management unit that supports guest isolation and protection.
    Type: Application
    Filed: November 30, 2015
    Publication date: March 17, 2016
    Inventors: Sanjay Patel, Ranjit Joseph Rozario
  • Embedded processor with virtualized security controls using guest identifications, a common kernel address space and operational permissions
    Patent number: 9223721
    Abstract: A method includes assigning unique guest identifications to different guests, specifying an address region and permissions for the different guests and controlling a guest jump from one physical memory segment to a second physical memory segment through operational permissions defined in a root memory management unit that supports guest isolation and protection.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: December 29, 2015
    Assignee: ARM FINANCE OVERSEAS LIMITED
    Inventors: Sanjay Patel, Ranjit Joseph Rozario
  • Apparatus and method for guest and root register sharing in a virtual machine
    Patent number: 9086906
    Abstract: A computer readable storage medium includes executable instructions to define a processor with guest mode control registers supporting guest mode operating behavior defined by guest context specified in the guest mode control registers. The guest mode control registers include a control bit to specify a guest access blocked register state and a shared register state. Root mode control registers support root mode operating behavior defined by root context specified in the root mode control registers. The root mode control registers include control bits to enable replicated register state access and shared register state access. The guest context and the root context support virtualization of hardware resources such that multiple operating systems supporting multiple applications are executed by the hardware resources.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: July 21, 2015
    Assignee: MIPS Technologies, Inc.
    Inventors: Sanjay Patel, Ranjit Joseph Rozario
  • Embedded Processor with Virtualized Security Controls Using Guest Identifications, a Common Kernel Address Space and Operational Permissions
    Publication number: 20140068138
    Abstract: A method includes assigning unique guest identifications to different guests, specifying an address region and permissions for the different guests and controlling a guest jump from one physical memory segment to a second physical memory segment through operational permissions defined in a root memory management unit that supports guest isolation and protection.
    Type: Application
    Filed: September 4, 2012
    Publication date: March 6, 2014
    Applicant: MIPS TECHNOLOGIES, INC.
    Inventors: Sanjay Patel, Ranjit Joseph Rozario
  • Apparatus and Method for Guest and Root Register Sharing in a Virtual Machine
    Publication number: 20130263124
    Abstract: A computer readable storage medium includes executable instructions to define a processor with guest mode control registers supporting guest mode operating behavior defined by guest context specified in the guest mode control registers. The guest mode control registers include a control bit to specify a guest access blocked register state and a shared register state. Root mode control registers support root mode operating behavior defined by root context specified in the root mode control registers. The root mode control registers include control bits to enable replicated register state access and shared register state access. The guest context and the root context support virtualization of hardware resources such that multiple operating systems supporting multiple applications are executed by the hardware resources.
    Type: Application
    Filed: March 30, 2012
    Publication date: October 3, 2013
    Applicant: MIPS TECHNOLOGIES, INC.
    Inventors: Sanjay Patel, Ranjit Joseph Rozario
  • Apparatus and Method for Accelerated Hardware Page Table Walk
    Publication number: 20120331265
    Abstract: A method of walking page tables includes comparing a virtual address to a plurality of virtual address bit segments to identify a match. Each virtual address bit segment is associated with a page table level that has a page table base address. A designated page table base address is received in response to the match. The page table walk starts at the designated page table, thereby skipping over earlier page tables.
    Type: Application
    Filed: June 24, 2011
    Publication date: December 27, 2012
    Applicant: MIPS TECHNOLOGIES, INC.
    Inventors: Ranjit Joseph Rozario, Sanjay Patel