Patents by Inventor Yaozu Dong

Yaozu Dong 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).

  • Publication number: 20200125500
    Abstract: The present disclosure provides a virtualization method for a device MMU, including: multiplexing a client MMU as a first layer address translation: a client device page table translates a device virtual address into a client physical address; using IOMMU to construct a second layer address translation: IOMMU translates the client physical address into a host physical address through a TO page table of a corresponding device in IOMMU. The virtualization method for a device MMU proposed by the present disclosure can efficiently virtualize the device MMU; successfully combines IOMMU into Mediated Pass-Through, and uses the system IOMMU to perform the second layer address translation, such that the complicated and inefficient Shadow Page Table is abandoned; not only improves the performance of the device MMU under virtualization, but also is simple to implement and completely transparent to the client, and is a universal and efficient solution.
    Type: Application
    Filed: September 15, 2017
    Publication date: April 23, 2020
    Inventors: Haibing GUAN, Yu XU, Yaozu DONG, Jianguo YAO
  • Publication number: 20200097313
    Abstract: Implementations disclosed describe a system and a method to execute a virtual machine on a processing device, receive a request to access a memory page identified by a guest virtual memory address (GVA) in an address space of the virtual machine, translate the GVA to a guest physical memory address (GPA) using a guest page table (GPT) comprising a GPT entry mapping the GVA to the GPA, translate the GPA to a host physical address (HPA) of the memory page, store, in a translation lookaside buffer (TLB), a TLB entry mapping the GVA to the HPA, modify the GPT entry to designate the memory page as accessed, detect an attempt by an application to modify the GPT entry; generate, in response to the attempt to modify the GPT entry, a page fault; and flush, in response to the page fault, the TLB entry.
    Type: Application
    Filed: February 22, 2019
    Publication date: March 26, 2020
    Inventors: Chuanxiao Dong, Yaozu Dong, Zhiyuan Lv, Zhi Wang
  • Patent number: 10375022
    Abstract: An apparatus, system, method, and machine-readable medium are disclosed. In one embodiment the apparatus is a network interface controller that includes one virtual function owned by a virtual machine present in the computer system. The controller includes a simple filtering agent that is associated with the first virtual function. The agent enforces simple filter rules for received network packets. The simple filter rules are capable of blocking the network packets from reaching the virtual machine. The apparatus also includes another virtual function that is owned by a virtual machine monitor present in the computer system. The controller also includes a side bounce filtering agent to forward the first network packet to the second virtual function if the first packet is blocked by the at least one of the one or more simple filter rules.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: August 6, 2019
    Assignee: Intel Corporation
    Inventors: Yaozu Dong, Kun Tian
  • Publication number: 20180167364
    Abstract: An apparatus, system, method, and machine-readable medium are disclosed. In one embodiment the apparatus is a network interface controller that includes one virtual function owned by a virtual machine present in the computer system. The controller includes a simple filtering agent that is associated with the first virtual function. The agent enforces simple filter rules for received network packets. The simple filter rules are capable of blocking the network packets from reaching the virtual machine. The apparatus also includes another virtual function that is owned by a virtual machine monitor present in the computer system. The controller also includes a side bounce filtering agent to forward the first network packet to the second virtual function if the first packet is blocked by the at least one of the one or more simple filter rules.
    Type: Application
    Filed: August 15, 2017
    Publication date: June 14, 2018
    Inventors: Yaozu Dong, Kun Tian
  • Publication number: 20180024854
    Abstract: Technologies for virtual machine migration are disclosed. A plurality of virtual machines may be established on a source node at varying tiers of quality-of-service. The source node may identify a set of virtual machines from the plurality of virtual machines having a lower or lowest tier of quality-of-service. Additionally, the source node may perform a pseudo-migration for each of the virtual machines of the identified set to determine a dynamic working set for each corresponding virtual machine. The source node may select a virtual machine for migration based on the dynamic working set. The pseudo migration may include emulation of a pre-copy phase of a corresponding live migration to identify the number of dirty memory pages likely to result during the corresponding live migration of the corresponding virtual machine.
    Type: Application
    Filed: March 27, 2015
    Publication date: January 25, 2018
    Inventors: Wei WANG, Yaozu DONG, Yang ZHANG
  • Publication number: 20170329623
    Abstract: Methods, software, and apparatus for application transparent, high available GPU computing with VM checkpointing. The guest access of certain GPU resources, such as MMIO resources, are trapped to keep a copy of guest context per semantics, and/or emulate the guest access of the resources prior to submission to the GPU, while other commands relating to certain graphics memory address regions are trapped before being passed through to the GPU. The trapped commands are scanned before submission to predict: a) potential to-be-dirtied graphics memory pages, and b) the execution time of intercepted commands, so the next checkpointing can be aligned to a predicted execution time. The GPU internal states are drained by flushing internal context/tlb/cache, at the completion of submitted commands, and then a snapshot of the vGPU state is taken, based on tracked GPU state, GPU context (through GPU-specific commands), detected dirty graphics memory pages and predicted to-be dirtied graphics memory pages.
    Type: Application
    Filed: November 24, 2014
    Publication date: November 16, 2017
    Inventors: Yaozu Dong, Kun Tian
  • Patent number: 9736116
    Abstract: An apparatus, system, method, and machine-readable medium are disclosed. In one embodiment the apparatus is a network interface controller that includes one virtual function owned by a virtual machine present in the computer system. The controller includes a simple filtering agent that is associated with the first virtual function. The agent enforces simple filter rules for received network packets. The simple filter rules are capable of blocking the network packets from reaching the virtual machine. The apparatus also includes another virtual function that is owned by a virtual machine monitor present in the computer system. The controller also includes a side bounce filtering agent to forward the first network packet to the second virtual function if the first packet is blocked by the at least one of the one or more simple filter rules.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: August 15, 2017
    Assignee: Intel Corporation
    Inventors: Yaozu Dong, Kun Tian
  • Publication number: 20160285830
    Abstract: An apparatus, system, method, and machine-readable medium are disclosed. In one embodiment the apparatus is a network interface controller that includes one virtual function owned by a virtual machine present in the computer system. The controller includes a simple filtering agent that is associated with the first virtual function. The agent enforces simple filter rules for received network packets. The simple filter rules are capable of blocking the network packets from reaching the virtual machine. The apparatus also includes another virtual function that is owned by a virtual machine monitor present in the computer system. The controller also includes a side bounce filtering agent to forward the first network packet to the second virtual function if the first packet is blocked by the at least one of the one or more simple filter rules.
    Type: Application
    Filed: March 1, 2016
    Publication date: September 29, 2016
    Inventors: Yaozu Dong, Kun Tian
  • Patent number: 9448831
    Abstract: Systems and methods may provide for identifying an assigned address space of a virtual machine (VM), wherein the assigned address space is associated with a graphics memory. Additionally, the assigned address space may be ballooned to disable usage by the VM of a remaining address space in the graphics memory that is not assigned to the VM. In one example, a view of the assigned address space by the VM may be identical to a view of the assigned address space by a virtual machine monitor (VMM) associated with the VM.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: September 20, 2016
    Assignee: Intel Corporation
    Inventors: Yaozu Dong, Kun Tian, Ke Yu
  • Patent number: 9396118
    Abstract: A method, including monitoring, by a remapping manager, a system state of a computing device for the occurrence of a predefined event, detecting, by the remapping manager, the occurrence of the predefined event, and initiating, by the remapping manager upon the detection of the predefined event, a remapping of first encoded addresses stored in tags, the first encoded addresses are associated with locations in main memory that are cached in a memory cache.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: July 19, 2016
    Assignee: Intel Corporation
    Inventor: Yaozu Dong
  • Patent number: 9336036
    Abstract: A virtualization based system comprises a host and a plurality of virtual machines that may each comprises a guest memory. A virtual machine monitor has access to underlying platform hardware in the system and may control physical resources in the platform. The platform hardware comprises a processor and a memory coupled to the processor. Further, the VMM may manage guest software including guest operating systems running on the virtual machines. A binary translation logic may replace guest memory writing instructions corresponding to a hot spot in guest application with translated codes to generate a mirrored content for the guest memory. The binary translation logic may combine one or more of the guest memory writing instructions in a region and keep the region atomic. The processor may execute the translated codes in an atomic region together to write a content in the guest memory and a mirrored content in a mirroring memory. The VMM may allocate a memory region in the host memory for the mirroring memory.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: May 10, 2016
    Assignee: Intel Corporation
    Inventors: Yaozu Dong, Yun Wang, Yunhong Jiang
  • Patent number: 9276875
    Abstract: An apparatus, system, method, and machine-readable medium are disclosed. In one embodiment the apparatus is a network interface controller that includes one virtual function owned by a virtual machine present in the computer system. The controller includes a simple filtering agent that is associated with the first virtual function. The agent enforces simple filter rules for received network packets. The simple filter rules are capable of blocking the network packets from reaching the virtual machine. The apparatus also includes another virtual function that is owned by a virtual machine monitor present in the computer system. The controller also includes a side bounce filtering agent to forward the first network packet to the second virtual function if the first packet is blocked by the at least one of the one or more simple filter rules.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: March 1, 2016
    Assignee: Intel Corporation
    Inventors: Yaozu Dong, Kun Tian
  • Patent number: 9183026
    Abstract: Machine-readable media, methods, apparatus and system are described. In some embodiments, a virtual machine monitor of a computer platform may comprise a service virtual machine created by the virtual machine monitor partitioning an underlying hardware machine to support execution of a plurality of overlying guest operating systems, wherein the plurality of guest operating systems comprise a guest operating system complying with a non-native guest system architecture different from a host system architecture with which the hardware machine complies. The service virtual machine may further comprise a translation layer to translate instructions from the guest operating system complying with the non-native guest system architecture into instructions complying with the host system architecture.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: November 10, 2015
    Assignee: Intel Corporation
    Inventors: Yun Wang, Yaozu Dong
  • Patent number: 9176770
    Abstract: Generally, this disclosure describes systems (and methods) for moderating interrupts in a virtualization environment. An overflow interrupt interval is defined. The overflow interrupt interval is used for triggering activation of an inactive guest so that the guest may respond to a critical event. The guest, including a network application, may be active for a first time interval and inactive for a second time interval. A latency interrupt interval may be defined. The latency interrupt interval is configured for interrupt moderation when the network application associated with a packet flow is active, i.e., when the guest including the network application is active on a processor. Of course, many alternatives, variations, and modifications are possible without departing from this embodiment.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: November 3, 2015
    Assignee: Intel Corporation
    Inventors: YaoZu Dong, Yunhong Jiang, Kun Tian
  • Publication number: 20150193247
    Abstract: Systems and methods may provide for identifying an assigned address space of a virtual machine (VM), wherein the assigned address space is associated with a graphics memory. Additionally, the assigned address space may be ballooned to disable usage by the VM of a remaining address space in the graphics memory that is not assigned to the VM. In one example, a view of the assigned address space by the VM may be identical to a view of the assigned address space by a virtual machine monitor (VMM) associated with the VM.
    Type: Application
    Filed: July 1, 2013
    Publication date: July 9, 2015
    Inventors: Yaozu Dong, Kun Tian, Ke Yu
  • Publication number: 20140379955
    Abstract: A virtualization based system comprises a host and a plurality of virtual machines that may each comprises a guest memory. A virtual machine monitor has access to underlying platform hardware in the system and may control physical resources in the platform. The platform hardware comprises a processor and a memory coupled to the processor. Further, the VMM may manage guest software including guest operating systems running on the virtual machines. A binary translation logic may replace guest memory writing instructions corresponding to a hot spot in guest application with translated codes to generate a mirrored content for the guest memory. The binary translation logic may combine one or more of the guest memory writing instructions in a region and keep the region atomic. The processor may execute the translated codes in an atomic region together to write a content in the guest memory and a mirrored content in a mirroring memory. The VMM may allocate a memory region in the host memory for the mirroring memory.
    Type: Application
    Filed: March 31, 2011
    Publication date: December 25, 2014
    Inventors: Yaozu Dong, Yunyoung Wang, Yunhong Jiang
  • Publication number: 20140331221
    Abstract: An apparatus, system, method, and machine-readable medium are disclosed. In one embodiment the apparatus is a network interface controller that includes one virtual function owned by a virtual machine present in the computer system. The controller includes a simple filtering agent that is associated with the first virtual function. The agent enforces simple filter rules for received network packets. The simple filter rules are capable of blocking the network packets from reaching the virtual machine. The apparatus also includes another virtual function that is owned by a virtual machine monitor present in the computer system. The controller also includes a side bounce filtering agent to forward the first network packet to the second virtual function if the first packet is blocked by the at least one of the one or more simple filter rules.
    Type: Application
    Filed: October 28, 2010
    Publication date: November 6, 2014
    Inventors: Yaozu Dong, Kun Tian
  • Publication number: 20140059547
    Abstract: Machine-readable media, methods, apparatus and system are described. In some embodiments, a virtual machine monitor of a computer platform may comprise a service virtual machine created by the virtual machine monitor partitioning an underlying hardware machine to support execution of a plurality of overlying guest operating systems, wherein the plurality of guest operating systems comprise a guest operating system complying with a non-native guest system architecture different from a host system architecture with which the hardware machine complies. The service virtual machine may further comprise a translation layer to translate instructions from the guest operating system complying with the non-native guest system architecture into instructions complying with the host system architecture.
    Type: Application
    Filed: November 6, 2013
    Publication date: February 27, 2014
    Inventors: Yun Wang, Yaozu Dong
  • Patent number: 8645951
    Abstract: Machine-readable media, methods, apparatus and system are described. In some embodiments, a virtual machine monitor of a computer platform may comprise a service virtual machine created by the virtual machine monitor partitioning an underlying hardware machine to support execution of a plurality of overlying guest operating systems, wherein the plurality of guest operating systems comprise a guest operating system complying with a non-native guest system architecture different from a host system architecture with which the hardware machine complies. The service virtual machine may further comprise a translation layer to translate instructions from the guest operating system complying with the non-native guest system architecture into instructions complying with the host system architecture.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: February 4, 2014
    Assignee: Intel Corporation
    Inventors: Yun Wang, Yaozu Dong
  • Publication number: 20140019686
    Abstract: A method, including monitoring, by a remapping manager, a system state of a computing device for the occurrence of a predefined event, detecting, by the remapping manager, the occurrence of the predefined event, and initiating, by the remapping manager upon the detection of the predefined event, a remapping of first encoded addresses stored in tags, the first encoded addresses are associated with locations in main memory that are cached in a memory cache.
    Type: Application
    Filed: December 28, 2011
    Publication date: January 16, 2014
    Inventor: Yaozu Dong