Patents by Inventor Gilbert Neiger

Gilbert Neiger 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: 10705976
    Abstract: Examples include a processor including at least one untrusted extended page table (EPT), circuitry to execute a set of instructions of the instruction set architecture (ISA) of the processor to manage at least one secure extended page table (SEPT), and a physical address translation component to translate a guest physical address of a guest physical memory to a host physical address of a host physical memory using one of the at least one untrusted EPT and the at least one SEPT.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: July 7, 2020
    Assignee: Intel Corporation
    Inventors: Ravi Sahita, Barry E. Huntley, Vedvyas Shanbhogue, Dror Caspi, Baruch Chaikin, Gilbert Neiger, Arie Aharon, Arumugam Thiyagarajah
  • Publication number: 20200201786
    Abstract: Implementations described provide hardware support for the co-existence of restricted and non-restricted encryption keys on a computing system. Such hardware support may comprise a processor having a core, a hardware register to store a bit range to identify a number of bits, of physical memory addresses, that define key identifiers (IDs) and a partition key ID identifying a boundary between non-restricted and restricted key IDs. The core may allocate at least one of the non-restricted key IDs to a software program, such as a hypervisor. The core may further allocate a restricted key ID to a trust domain whose trust computing base does not comprise the software program. A memory controller coupled to the core may allocate a physical page of a memory to the trust domain, wherein data of the physical page of the memory is to be encrypted with an encryption key associated with the restricted key ID.
    Type: Application
    Filed: December 20, 2018
    Publication date: June 25, 2020
    Inventors: Ido OUZIEL, Arie AHARON, Dror CASPI, Baruch CHAIKIN, Jacob DOWECK, Gideon GERZON, Barry E. HUNTLEY, Francis X. MCKEEN, Gilbert NEIGER, Carlos V. ROZAS, Ravi L. SAHITA, Vedvyas SHANBHOGUE, Assaf ZALTSMAN, Hormuzd M. KHOSRAVI
  • Publication number: 20200204356
    Abstract: A processor includes a processor core. A register of the core is to store: a bit range for a number of address bits of physical memory addresses used for key identifiers (IDs), and a first key ID to identify a boundary between non-restricted key IDs and restricted key IDs of the key identifiers. A memory controller is to: determine, via access to bit range and the first key ID in the register, a key ID range of the restricted key IDs within the physical memory addresses; access a processor state that a first logical processor of the processor core executes in an untrusted domain mode; receive a memory transaction, from the first logical processor, including an address associated with a second key ID; and generate a fault in response to a determination that the second key ID is within a key ID range of the restricted key IDs.
    Type: Application
    Filed: December 20, 2018
    Publication date: June 25, 2020
    Inventors: Ido OUZIEL, Arie AHARON, Dror CASPI, Baruch CHAIKIN, Jacob DOWECK, Gideon GERZON, Barry E. HUNTLEY, Francis X. MCKEEN, Gilbert NEIGER, Carlos V. ROZAS, Ravi L. SAHITA, Vedvyas SHANBHOGUE, Assaf ZALTSMAN
  • Publication number: 20200202012
    Abstract: An integrated circuit includes a core and memory controller coupled to a last level cache (LLC). A first key identifier for a first program is associated with physical addresses of memory that store data of the first program. To flush and invalidate cache lines associated with the first key identifier, the core is to execute an instruction (having the first key identifier) to generate a transaction with the first key identifier. In response to the transaction, a cache controller of the LLC is to: identify matching entries in the LLC by comparison of first key identifier with at least part of an address tag of a plurality of entries in a tag storage structure of the LLC, the matching entries associated with cache lines of the LLC; write back, to the memory, data stored in the cache lines; and mark the matching entries of the tag storage structure as invalid.
    Type: Application
    Filed: December 20, 2018
    Publication date: June 25, 2020
    Inventors: Vedvyas SHANBHOGUE, Stephen VAN DOREN, Gilbert NEIGER, Barry E. HUNTLEY, Amy L. SANTONI, Raghunandan MAKARAM, Hormuzd KHOSRAVI, Siddhartha CHHABRA
  • Publication number: 20200201789
    Abstract: Technologies disclosed herein provide cryptographic computing with cryptographically encoded pointers in multi-tenant environments. An example method comprises executing, by a trusted runtime, first instructions to generate a first address key for a private memory region in the memory and generate a first cryptographically encoded pointer to the private memory region in the memory. Generating the first cryptographically encoded pointer includes storing first context information associated with the private memory region in first bits of the first cryptographically encoded pointer and performing a cryptographic algorithm on a slice of a first linear address of the private memory region based, at least in part, on the first address key and a first tweak, the first tweak including the first context information. The method further includes permitting a first tenant in the multi-tenant environment to access the first address key and the first cryptographically encoded pointer to the private memory region.
    Type: Application
    Filed: January 10, 2020
    Publication date: June 25, 2020
    Applicant: Intel Corporation
    Inventors: David M. Durham, Michael LeMay, Ramya Jayaram Masti, Gilbert Neiger, Jason W. Brandt
  • Publication number: 20200201787
    Abstract: A processor includes a processor core to execute an application; a key attribute table (KAT) register to store a plurality of key identifiers (KeyIDs) associated with the application, wherein a KeyID identifies an encryption key; a selection circuit coupled to the KAT register to select the KeyID from the KAT register based on a KeyID selector (KSEL), wherein the KSEL is associated with a page of memory to which access is performed; a cache coupled to the processor core, the cache to store a physical address, data, and the KeyID of the page of memory, wherein the KeyID is an attribute associated with the page of memory; and a memory controller coupled to the cache to encrypt, based on the encryption key identified by the KeyID, the data of the page of memory stored in the cache as it is evicted from the cache to main memory.
    Type: Application
    Filed: December 20, 2018
    Publication date: June 25, 2020
    Inventors: Vedvyas Shanbhogue, Stephen R. Van Doren, Gilbert Neiger, Barry E. Huntley, Amy Santoni, Raghunandan Makaram, Rajat Agarwal, Ronald Perez, Hormuzd Khosravi, Manjula Peddireddy, Siddhartha Chhabra
  • Patent number: 10678575
    Abstract: A processing core comprising instruction execution logic circuitry and register space. The register space to be loaded from a VMCS, commensurate with a VM entry, with information indicating whether a service provided by the processing core on behalf of the VMM is enabled. The instruction execution logic to, in response to guest software invoking an instruction: refer to the register space to confirm that the service has been enabled, and, refer to second register space or memory space to fetch input parameters for said service written by said guest software.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: June 9, 2020
    Assignee: Intel Corporation
    Inventors: Gilbert Neiger, Barry E. Huntley, Ravi L. Sahita, Vedvyas Shanbhogue, Jason W. Brandt
  • Patent number: 10671737
    Abstract: In a public cloud environment, each consumer's/guest's workload is encrypted in a cloud service provider's (CSP's) server memory using a consumer-provided key unknown to the CSP's workload management software. An encrypted consumer/guest workload image is loaded into the CSP's server memory at a memory location specified by the CSP's workload management software. Based upon the CSP-designated memory location, the guest workload determines expected hardware physical addresses into which memory mapping structures and other types of consumer data should be loaded. These expected hardware physical addresses are specified by the guest workload in a memory ownership table (MOT), which is used to check that subsequently CSP-designated memory mappings are as expected. Memory ownership table entries also may be encrypted by the consumer-provided key unknown to the CSP.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: June 2, 2020
    Assignee: Intel Corporation
    Inventors: David M. Durham, Siddhartha Chhabra, Ravi L. Sahita, Barry E. Huntley, Gilbert Neiger, Gideon Gerzon, Baiju V. Patel
  • Publication number: 20200159673
    Abstract: This disclosure is directed to a system for address mapping and translation protection. In one embodiment, processing circuitry may include a virtual machine manager (VMM) to control specific guest linear address (GLA) translations. Control may be implemented in a performance sensitive and secure manner, and may be capable of improving performance for critical linear address page walks over legacy operation by removing some or all of the cost of page walking extended page tables (EPTs) for critical mappings. Alone or in combination with the above, certain portions of a page table structure may be selectively made immutable by a VMM or early boot process using a sub-page policy (SPP). For example, SPP may enable non-volatile kernel and/or user space code and data virtual-to-physical memory mappings to be made immutable (e.g., non-writable) while allowing for modifications to non-protected portions of the OS paging structures and particularly the user space.
    Type: Application
    Filed: November 18, 2019
    Publication date: May 21, 2020
    Applicant: Intel Corporation
    Inventors: RAVI L. SAHITA, GILBERT NEIGER, VEDVYAS SHANBHOGUE, DAVID M. DURHAM, ANDREW V. ANDERSON, DAVID A. KOUFATY, ASIT K. MALLICK, ARUMUGAM THIYAGARAJAH, BARRY E. HUNTLEY, DEEPAK K. GUPTA, MICHAEL LEMAY, JOSEPH F. CIHULA, BAIJU V. PATEL
  • Publication number: 20200159676
    Abstract: Technologies disclosed herein provide cryptographic computing with cryptographically encoded pointers in multi-tenant environments. An example method comprises executing, by a trusted runtime, first instructions to generate a first address key for a private memory region in the memory and generate a first cryptographically encoded pointer to the private memory region in the memory. Generating the first cryptographically encoded pointer includes storing first context information associated with the private memory region in first bits of the first cryptographically encoded pointer and performing a cryptographic algorithm on a slice of a first linear address of the private memory region based, at least in part, on the first address key and a first tweak, the first tweak including the first context information. The method further includes permitting a first tenant in the multi-tenant environment to access the first address key and the first cryptographically encoded pointer to the private memory region.
    Type: Application
    Filed: December 20, 2019
    Publication date: May 21, 2020
    Applicant: Intel Corporation
    Inventors: David M. Durham, Michael LeMay, Ramya Jayaram Masti, Gilbert Neiger, Jason W. Brandt
  • Patent number: 10657071
    Abstract: In one embodiment, a cryptographic circuit is adapted to receive a data line including at least an encrypted portion from a memory in response to a read request having a memory address from a first agent, obtain a key identifier for a key of the first agent from the data line, obtain the key using the key identifier, decrypt the at least encrypted portion of the data line using the key and send decrypted data of the at least encrypted portion of the data line to the first agent. Other embodiments are described and claimed.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: May 19, 2020
    Assignee: Intel Corporation
    Inventors: David M. Durham, Siddhartha Chhabra, Amy L. Santoni, Gilbert Neiger, Barry E. Huntley, Hormuzd M. Khosravi, Baiju V. Patel, Ravi L. Sahita, Gideon Gerzon, Ido Ouziel, Ioannis T. Schoinas, Rajesh M. Sankaran
  • Publication number: 20200142838
    Abstract: A processor includes a decode unit to decode an instruction that is to indicate a page of a protected container memory, and a storage location outside of the protected container memory. An execution unit, in response to the instruction, is to ensure that there are no writable references to the page of the protected container memory while it has a write protected state. The execution unit is to encrypt a copy of the page of the protected container memory. The execution unit is to store the encrypted copy of the page to the storage location outside of the protected container memory, after it has been ensured that there are no writable references. The execution unit is to leave the page of the protected container memory in the write protected state, which is also valid and readable, after the encrypted copy has been stored to the storage location.
    Type: Application
    Filed: December 27, 2019
    Publication date: May 7, 2020
    Inventors: Carlos V. Rozas, Mona Vij, Rebekah M. Leslie-Hurd, Krystof C. Zmudzinski, Somnath Chakrabarti, Francis X. Mckeen, Vincent R. Scarlata, Simon P. Johnson, Ilya Alexandrovich, Gilbert Neiger, Vedvyas Shanbhogue, Ittai Anati
  • Patent number: 10628612
    Abstract: According to one embodiment, a method comprises executing an untrusted host virtual machine monitor (VMM) to manage execution of at least one guest virtual machine (VM). The VMM receives an encrypted key domain key, an encrypted guest code image, and an encrypted guest control structure. The VM also issues a create command. In response, a processor creates a first key domain comprising a region of memory to be encrypted by a key domain key. The encrypted key domain key is decrypted to produce the key domain key, which is inaccessible to the VMM. The VMM issues a launch command. In response, a first guest VM is launched within the first key domain. In response to a second launch command, a second guest VM is launched within the first key domain. The second guest VM provides an agent to act on behalf of the VMM. Other embodiments are described and claimed.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: April 21, 2020
    Assignee: Intel Corporation
    Inventors: David M. Durham, Gilbert Neiger, Barry E. Huntley, Ravi L. Sahita, Baiju V. Patel
  • Patent number: 10599455
    Abstract: Embodiments of apparatuses and methods for processing virtualization events in a layered virtualization architecture are disclosed. In one embodiment, an apparatus includes a hardware processor including event circuit to recognize a virtualization event, and evaluation circuit to determine whether to transfer control of the apparatus from a child guest to a parent guest in response to the virtualization event, wherein the child guest and the parent guest each include a bit per virtualization event to indicate whether the parent guest is to gain control when the virtualization event occurs.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: March 24, 2020
    Assignee: Intel Corporation
    Inventors: Steven M. Bennett, Andrew V. Anderson, Gilbert Neiger, Dion Rodgers, Richard A. Uhlig, Lawrence O. Smith, Barry E. Huntley
  • Patent number: 10599547
    Abstract: Embodiments of an invention for monitoring the operation of a processor are disclosed. In one embodiment, a system includes a processor and a hardware agent external to the processor. The processor includes virtualization logic to provide for the processor to operate in a root mode and in a non-root mode. The hardware agent is to verify operation of the processor in the non-root mode based on tracing information to be collected by a software agent to be executed by the processor in the root mode.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: March 24, 2020
    Assignee: Intel Corporation
    Inventors: Gilbert Neiger, Andrew V. Anderson, Richard A. Uhlig, David M. Durham, Ronak Singhal, Xiangbin Wu, Sailesh Kottapalli
  • Patent number: 10592421
    Abstract: Instructions and logic provide advanced paging capabilities for secure enclave page caches. Embodiments include multiple hardware threads or processing cores, a cache to store secure data for a shared page address allocated to a secure enclave accessible by the hardware threads. A decode stage decodes a first instruction specifying said shared page address as an operand, and execution units mark an entry corresponding to an enclave page cache mapping for the shared page address to block creation of a new translation for either of said first or second hardware threads to access the shared page. A second instruction is decoded for execution, the second instruction specifying said secure enclave as an operand, and execution units record hardware threads currently accessing secure data in the enclave page cache corresponding to the secure enclave, and decrement the recorded number of hardware threads when any of the hardware threads exits the secure enclave.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: March 17, 2020
    Assignee: Intel Corporation
    Inventors: Carlos V. Rozas, Ilya Alexandrovich, Ittai Anati, Alex Berenzon, Michael A. Goldsmith, Barry E. Huntley, Anton Ivanov, Simon P. Johnson, Rebekah M. Leslie-Hurd, Francis X. McKeen, Gilbert Neiger, Rinat Rappoport, Scott D. Rodgers, Uday R. Savagaonkar, Vincent R. Scarlata, Vedvyas Shanbhogue, Wesley H. Smith, William C. Wood
  • Patent number: 10572415
    Abstract: Systems and methods for delivering interrupts to user-level applications. An example processing system comprises: a memory configured to store a plurality of user-level APIC data structures and a plurality of user-level interrupt handler address data structures corresponding to a plurality of user-level applications being executed by the processing system; and a processing core configured, responsive to receiving a notification of a user-level interrupt, to: set a pending interrupt bit flag having a position defined by an identifier of the user-level interrupt in a user-level APIC data structure associated with a user-level application that is currently being executed by the processing core, and invoke a user-level interrupt handler identified by a user-level interrupt handler address data structure associated with the user-level application, for a pending user-level interrupt having a highest priority among one or more pending user-level interrupts identified by the user-level APIC data structure.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: February 25, 2020
    Assignee: Intel Corporation
    Inventors: Gilbert Neiger, Rajesh M. Sankaran
  • Publication number: 20200050471
    Abstract: A processor may include a register to store a bus-lock-disable bit and an execution unit to execute instructions. The execution unit may receive an instruction that includes a memory access request. The execution may further determine that the memory access request requires acquiring a bus lock, and, responsive to detecting that the bus-lock-disable bit indicates that bus locks are disabled, signal a fault to an operating system.
    Type: Application
    Filed: August 29, 2019
    Publication date: February 13, 2020
    Inventors: Vedvyas Shanbhogue, Gilbert Neiger, Arumugam Thiyagarajah
  • Patent number: 10558588
    Abstract: A processor includes a decode unit to decode an instruction that is to indicate a page of a protected container memory, and a storage location outside of the protected container memory. An execution unit, in response to the instruction, is to ensure that there are no writable references to the page of the protected container memory while it has a write protected state. The execution unit is to encrypt a copy of the page of the protected container memory. The execution unit is to store the encrypted copy of the page to the storage location outside of the protected container memory, after it has been ensured that there are no writable references. The execution unit is to leave the page of the protected container memory in the write protected state, which is also valid and readable, after the encrypted copy has been stored to the storage location.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: February 11, 2020
    Assignee: Intel Corporation
    Inventors: Carlos V. Rozas, Mona Vij, Rebekah M. Leslie-Hurd, Krystof C. Zmudzinski, Somnath Chakrabarti, Francis X. Mckeen, Vincent R. Scarlata, Simon P. Johnson, Ilya Alexandrovich, Gilbert Neiger, Vedvyas Shanbhogue, Ittai Anati
  • Patent number: 10534724
    Abstract: Instructions and logic support suspending and resuming migration of enclaves in a secure enclave page cache (EPC). An EPC stores a secure domain control structure (SDCS) in storage accessible by an enclave for a management process, and by a domain of enclaves. A second processor checks if a corresponding version array (VA) page is bound to the SDCS, and if so: increments a version counter in the SDCS for the page, performs an authenticated encryption of the page from the EPC using the version counter in the SDCS, and writes the encrypted page to external memory. A second processor checks if a corresponding VA page is bound to a second SDCS of the second processor, and if so: performs an authenticated decryption of the page using a version counter in the second SDCS, and loads the decrypted page to the EPC in the second processor if authentication passes.
    Type: Grant
    Filed: December 24, 2015
    Date of Patent: January 14, 2020
    Assignee: Intel Corporation
    Inventors: Carlos V. Rozas, Ilya Alexandrovich, Gilbert Neiger, Francis X. McKeen, Ittai Anati, Vedvyas Shanbhogue, Mona Vij, Rebekah Leslie-Hurd, Krystof C. Zmudzinski, Somnath Chakrabarti, Vincent R. Scarlata, Simon P. Johnson