Patents by Inventor Shamanna M. Datta

Shamanna M. Datta 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).

  • Patent number: 11861053
    Abstract: Techniques for tamper detection of a memory module having non-volatile memory devices resident on a printed circuit board (PCB) by circuitry of a controller also resident on the PCB. Examples include determining resistance values of a character pattern sprayed on a side of a cover facing the non-volatile memory devices using conductive ink following first and second boots of the memory module and asserting a bit of a register to indicate tampering of the memory modules based on a comparison of the resistance values. Tamper policy actions may be initiated based on detection of tampering.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: January 2, 2024
    Assignee: Intel Corporation
    Inventors: Shamanna M. Datta, Asher M. Altman, John K. Grooms, Mohamed Arafa
  • Patent number: 11379214
    Abstract: An interface is provided to update a firmware of a persistent memory module at runtime without restarting an operating system on the platform. The operating system initiates the firmware update by triggering a sleep state or by entering a soft reboot. The interface is capable of preserving the state of the platform for all memory modes that support volatile memory regions, persistent memory regions, or both, and reducing or eliminating the demand for access to memory during the firmware update. The persistent memory module is capable of updating the firmware responsive to a platform instruction generated using the interface, including preserving operational states for memory devices in all memory regions, including memory devices in volatile and persistent memory regions.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: July 5, 2022
    Assignee: Intel Corporation
    Inventors: Murugasamy K. Nachimuthu, Mohan J. Kumar, Shamanna M. Datta
  • Publication number: 20210103684
    Abstract: Techniques for tamper detection of a memory module having non-volatile memory devices resident on a printed circuit board (PCB) by circuitry of a controller also resident on the PCB. Examples include determining resistance values of a character pattern sprayed on a side of a cover facing the non-volatile memory devices using conductive ink following first and second boots of the memory module and asserting a bit of a register to indicate tampering of the memory modules based on a comparison of the resistance values. Tamper policy actions may be initiated based on detection of tampering.
    Type: Application
    Filed: December 16, 2020
    Publication date: April 8, 2021
    Inventors: Shamanna M. DATTA, Asher M. ALTMAN, John K. GROOMS, Mohamed ARAFA
  • Patent number: 10671416
    Abstract: Various embodiments are generally directed to the provision and use of various hardware and software components of a computing device to monitor the state of layered virtual machine (VM) monitoring software components. An apparatus includes a first processor element; and logic to receive an indication that a first timer has reached an end of a first period of time, monitor execution of a VMM (virtual machine monitor) watcher by a second processor element, determine whether the second processor element completes execution of the VMM watcher to verify integrity of a VMM before a second timer reaches an end of a second period of time, and transmit an indication of the determination to a computing device. Other embodiments are described and claimed.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: June 2, 2020
    Assignee: INTEL CORPORATION
    Inventors: Mahesh S. Natu, Shamanna M. Datta
  • Patent number: 10671466
    Abstract: Systems, apparatuses and methods may provide for receiving one or more debug communications and programming, via a bus, a set of debug registers with debug information corresponding to the one or more debug communications. Additionally, tunnel logic hardware may be instructed to transfer the debug information from the set of debug registers to one or more test access ports of an intelligent device such as a non-volatile memory storage unit having a microcontroller. In one example, if it is detected that debug permission has been granted during a boot process, a control status register may be unlocked. If, on the other hand, the debug permission is not detected during the boot process, the control status register may be locked. Accordingly, an enable bit of the control status register may be used to activate the tunnel logic hardware only if the control status register is unlocked.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: June 2, 2020
    Assignee: Intel Corporation
    Inventors: Shamanna M. Datta, Murugasamy K. Nachimuthu, Mahesh S. Natu
  • Publication number: 20190243637
    Abstract: An interface is provided to update a firmware of a persistent memory module at runtime without restarting an operating system on the platform. The operating system initiates the firmware update by triggering a sleep state or by entering a soft reboot. The interface is capable of preserving the state of the platform for all memory modes that support volatile memory regions, persistent memory regions, or both, and reducing or eliminating the demand for access to memory during the firmware update. The persistent memory module is capable of updating the firmware responsive to a platform instruction generated using the interface, including preserving operational states for memory devices in all memory regions, including memory devices in volatile and persistent memory regions.
    Type: Application
    Filed: March 29, 2019
    Publication date: August 8, 2019
    Inventors: Murugasamy K. NACHIMUTHU, Mohan J. KUMAR, Shamanna M. DATTA
  • Patent number: 10303503
    Abstract: An apparatus and method for hardware protection of a virtual machine monitor (VMM) runtime integrity watcher is described. A set of one or more hardware range registers that protect a contiguous memory space that is to store the VMM runtime integrity watcher. The set of hardware range registers are to protect the VMM runtime integrity watcher from being modified when loaded into the contiguous memory space. The VMM runtime integrity watcher, when executed, performs an integrity check on a VMM during runtime of the VMM.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: May 28, 2019
    Assignee: Intel Corporation
    Inventors: Shamanna M. Datta, Alberto J. Munoz, Mahesh S. Natu, Scott T. Durrant
  • Patent number: 10169268
    Abstract: In one embodiment, the present invention includes a processor that has an on-die storage such as a static random access memory to store an architectural state of one or more threads that are swapped out of architectural state storage of the processor on entry to a system management mode (SMM). In this way communication of this state information to a system management memory can be avoided, reducing latency associated with entry into SMM. Embodiments may also enable the processor to update a status of executing agents that are either in a long instruction flow or in a system management interrupt (SMI) blocked state, in order to provide an indication to agents inside the SMM. Other embodiments are described and claimed.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: January 1, 2019
    Assignee: Intel Corporation
    Inventors: Mahesh Natu, Thanunathan Rangarajan, Gautam Doshi, Shamanna M. Datta, Baskaran Ganesan, Mohan J. Kumar, Rajesh S. Parthasarathy, Frank Binns, Rajesh Nagaraja Murthy, Robert C. Swanson
  • Publication number: 20180143923
    Abstract: In one embodiment, the present invention includes a processor that has an on-die storage such as a static random access memory to store an architectural state of one or more threads that are swapped out of architectural state storage of the processor on entry to a system management mode (SMM). In this way communication of this state information to a system management memory can be avoided, reducing latency associated with entry into SMM. Embodiments may also enable the processor to update a status of executing agents that are either in a long instruction flow or in a system management interrupt (SMI) blocked state, in order to provide an indication to agents inside the SMM. Other embodiments are described and claimed.
    Type: Application
    Filed: January 17, 2018
    Publication date: May 24, 2018
    Inventors: Mahesh Natu, Thanunathan Rangarajan, Gautam Doshi, Shamanna M. Datta, Baskaran Ganesan, Mohan J. Kumar, Rajesh S. Parthasarathy, Frank Binns, Rajesh Nagaraja Murthy, Robert C. Swanson
  • Publication number: 20180067794
    Abstract: Systems, apparatuses and methods may provide for receiving one or more debug communications and programming, via a bus, a set of debug registers with debug information corresponding to the one or more debug communications. Additionally, tunnel logic hardware may be instructed to transfer the debug information from the set of debug registers to one or more test access ports of an intelligent device such as a non-volatile memory storage unit having a microcontroller. In one example, if it is detected that debug permission has been granted during a boot process, a control status register may be unlocked. If, on the other hand, the debug permission is not detected during the boot process, the control status register may be locked. Accordingly, an enable bit of the control status register may be used to activate the tunnel logic hardware only if the control status register is unlocked.
    Type: Application
    Filed: September 18, 2017
    Publication date: March 8, 2018
    Applicant: Intel Corporation
    Inventors: Shamanna M. Datta, Murugasamy K. Nachimuthu, Mahesh S. Natu
  • Publication number: 20170371689
    Abstract: Various embodiments are generally directed to the provision and use of various hardware and software components of a computing device to monitor the state of layered virtual machine (VM) monitoring software components. An apparatus includes a first processor element; and logic to receive an indication that a first timer has reached an end of a first period of time, monitor execution of a VMM (virtual machine monitor) watcher by a second processor element, determine whether the second processor element completes execution of the VMM watcher to verify integrity of a VMM before a second timer reaches an end of a second period of time, and transmit an indication of the determination to a computing device. Other embodiments are described and claimed.
    Type: Application
    Filed: July 31, 2017
    Publication date: December 28, 2017
    Applicant: INTEL CORPORATION
    Inventors: MAHESH S. NATU, SHAMANNA M. DATTA
  • Patent number: 9766963
    Abstract: Systems, apparatuses and methods may provide for receiving one or more debug communications and programming, via a bus, a set of debug registers with debug information corresponding to the one or more debug communications. Additionally, tunnel logic hardware may be instructed to transfer the debug information from the set of debug registers to one or more test access ports of an intelligent device such as a non-volatile memory storage unit having a microcontroller. In one example, if it is detected that debug permission has been granted during a boot process, a control status register may be unlocked. If, on the other hand, the debug permission is not detected during the boot process, the control status register may be locked. Accordingly, an enable bit of the control status register may be used to activate the tunnel logic hardware only if the control status register is unlocked.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: September 19, 2017
    Assignee: Intel Corporation
    Inventors: Shamanna M. Datta, Murugasamy K. Nachimuthu, Mahesh S. Natu
  • Publication number: 20170252170
    Abstract: An apparatus and method for hardware protection of a virtual machine monitor (VMM) runtime integrity watcher is described. A set of one or more hardware range registers that protect a contiguous memory space that is to store the VMM runtime integrity watcher. The set of hardware range registers are to protect the VMM runtime integrity watcher from being modified when loaded into the contiguous memory space. The VMM runtime integrity watcher, when executed, performs an integrity check on a VMM during runtime of the VMM.
    Type: Application
    Filed: February 14, 2017
    Publication date: September 7, 2017
    Inventors: Shamanna M. Datta, Alberto J. Munoz, Mahesh S. Natu, Scott T. Durrant
  • Patent number: 9720716
    Abstract: Various embodiments are generally directed to the provision and use of various hardware and software components of a computing device to monitor the state of layered virtual machine (VM) monitoring software components. An apparatus includes a first processor element; and logic to receive an indication that a first timer has reached an end of a first period of time, monitor execution of a VMM (virtual machine monitor) watcher by a second processor element, determine whether the second processor element completes execution of the VMM watcher to verify integrity of a VMM before a second timer reaches an end of a second period of time, and transmit an indication of the determination to a computing device. Other embodiments are described and claimed.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: August 1, 2017
    Assignee: INTEL CORPORATION
    Inventors: Mahesh S. Natu, Shamanna M. Datta
  • Publication number: 20170083393
    Abstract: Systems, apparatuses and methods may provide for receiving one or more debug communications and programming, via a bus, a set of debug registers with debug information corresponding to the one or more debug communications. Additionally, tunnel logic hardware may be instructed to transfer the debug information from the set of debug registers to one or more test access ports of an intelligent device such as a non-volatile memory storage unit having a microcontroller. In one example, if it is detected that debug permission has been granted during a boot process, a control status register may be unlocked. If, on the other hand, the debug permission is not detected during the boot process, the control status register may be locked. Accordingly, an enable bit of the control status register may be used to activate the tunnel logic hardware only if the control status register is unlocked.
    Type: Application
    Filed: September 23, 2015
    Publication date: March 23, 2017
    Applicant: INTEL CORPORATION
    Inventors: Shamanna M. Datta, Murugasamy K. Nachimuthu, Mahesh S. Natu
  • Publication number: 20170062023
    Abstract: Apparatus, systems, and methods to implement boot operations in nonvolatile storage devices can include, in one example, a controller comprising logic to receive a power down instruction, record a timestamp associated with the power down instruction, and store the timestamp in a nonvolatile memory table communicatively coupled to the controller. Other examples are also disclosed and claimed.
    Type: Application
    Filed: August 26, 2015
    Publication date: March 2, 2017
    Applicant: INTEL CORPORATION
    Inventors: Shamanna M. Datta, Richard P. Mangold, Mahesh S. Natu
  • Patent number: 9566158
    Abstract: An apparatus and method for hardware protection of a virtual machine monitor (VMM) runtime integrity watcher is described. A set of one or more hardware range registers that protect a contiguous memory space that is to store the VMM runtime integrity watcher. The set of hardware range registers are to protect the VMM runtime integrity watcher from being modified when loaded into the contiguous memory space. The VMM runtime integrity watcher, when executed, performs an integrity check on a VMM during runtime of the VMM.
    Type: Grant
    Filed: December 31, 2011
    Date of Patent: February 14, 2017
    Assignee: Intel Corporation
    Inventors: Shamanna M. Datta, Albert J. Munoz, Mahesh S. Natu, Scott T. Durrant
  • Publication number: 20170010991
    Abstract: In one embodiment, the present invention includes a processor that has an on-die storage such as a static random access memory to store an architectural state of one or more threads that are swapped out of architectural state storage of the processor on entry to a system management mode (SMM). In this way communication of this state information to a system management memory can be avoided, reducing latency associated with entry into SMM. Embodiments may also enable the processor to update a status of executing agents that are either in a long instruction flow or in a system management interrupt (SMI) blocked state, in order to provide an indication to agents inside the SMM. Other embodiments are described and claimed.
    Type: Application
    Filed: September 20, 2016
    Publication date: January 12, 2017
    Inventors: Mahesh Natu, Thanunathan Rangarajan, Gautam Doshi, Shamanna M. Datta, Baskaran Ganesan, Mohan J. Kumar, Rajesh S. Parthasarathy, Frank Binns, Rajesh Nagaraja Murthy, Robert C. Swanson
  • Patent number: 9465647
    Abstract: In one embodiment, the present invention includes a processor that has an on-die storage such as a static random access memory to store an architectural state of one or more threads that are swapped out of architectural state storage of the processor on entry to a system management mode (SMM). In this way communication of this state information to a system management memory can be avoided, reducing latency associated with entry into SMM. Embodiments may also enable the processor to update a status of executing agents that are either in a long instruction flow or in a system management interrupt (SMI) blocked state, in order to provide an indication to agents inside the SMM. Other embodiments are described and claimed.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: October 11, 2016
    Assignee: Intel Corporation
    Inventors: Mahesh Natu, Thanunathan Rangarajan, Gautam Doshi, Shamanna M. Datta, Baskaran Ganesan, Mohan J. Kumar, Rajesh S. Parthasarathy, Frank Binns, Rajesh Nagaraja Murthy, Robert C. Swanson
  • Patent number: 9448867
    Abstract: A method is described that includes detecting that a memory access of system management mode program code is attempting to reach program code outside of a protected region of memory by comparing a target memory address of a memory access instruction of the system management program code again information that defines confines of the protection region. The method also includes raising an error signal in response to the detecting.
    Type: Grant
    Filed: December 31, 2011
    Date of Patent: September 20, 2016
    Assignee: Intel Corporation
    Inventors: Shamanna M. Datta, Rajesh S. Parathasarathy, Mahesh S. Natu, Frank Binns, Mohan J. Kumar