公开(公告)号：US11995462B2

公开(公告)日：2024-05-28

申请号：US18153177

申请日：2023-01-11

Applicant: Intel Corporation

Inventor： Sanjay Kumar ,  Philip R. Lantz ,  Kun Tian ,  Utkarsh Y. Kakaiya ,  Rajesh M. Sankaran

IPC: G06F9/455 ,  G06F9/30 ,  G06F12/1009

CPC classification number: G06F9/45558 ,  G06F9/30101 ,  G06F12/1009 ,  G06F2009/45579

Abstract: Techniques for transferring virtual machines and resource management in a virtualized computing environment are described. In one embodiment, for example, an apparatus may include at least one memory, at least one processor, and logic for transferring a virtual machine (VM), at least a portion of the logic comprised in hardware coupled to the at least one memory and the at least one processor, the logic to generate a plurality of virtualized capability registers for a virtual device (VDEV) by virtualizing a plurality of device-specific capability registers of a physical device to be virtualized by the VM, the plurality of virtualized capability registers comprising a plurality of device-specific capabilities of the physical device, determine a version of the physical device to support via a virtual machine monitor (VMM), and expose a subset of the virtualized capability registers associated with the version to the VM. Other embodiments are described and claimed.

公开(公告)号：US11971827B2

公开(公告)日：2024-04-30

申请号：US17438852

申请日：2019-06-21

Applicant: Intel Corporation

Inventor： Jun Tian ,  Kun Tian ,  Yu Zhang

IPC: G06F12/1009 ,  G06F9/455 ,  G06F9/48 ,  G06F12/109

CPC classification number: G06F12/1009 ,  G06F9/45558 ,  G06F9/4812 ,  G06F12/109 ,  G06F2009/45583 ,  G06F2212/657

Abstract: Methods, apparatus, systems and articles of manufacture to control address space isolation in a virtual machine are disclosed. An example apparatus includes an address width adjustor to identify a memory width value corresponding to a guest memory associated with a virtual machine (VM), and generate an expanded emulated memory width value. The example apparatus also includes a memory mirror manager to generate a first guest physical address (GPA) range based on the memory width value, and generate a second GPA range based on the expanded emulated memory width value. The example apparatus also includes an EPT generator to generate root paging structures of a first type of EPT with respective addresses within the first GPA range, and generate root paging structures of a second type of EPT with respective addresses within (a) the first GPA range and (b) the second GPA range.

公开(公告)号：US11921632B2

公开(公告)日：2024-03-05

申请号：US17695788

申请日：2022-03-15

Applicant: Intel Corporation

Inventor： Yao Zu Dong ,  Kun Tian ,  Fengguang Wu ,  Jingqi Liu

IPC: G06F12/08 ,  G06F3/06 ,  G06F12/0802

CPC classification number: G06F12/0802 ,  G06F3/0604 ,  G06F3/0647 ,  G06F3/0667 ,  G06F3/0673 ,  G06F2212/651

Abstract: Various embodiments are generally directed to virtualized systems. A first guest memory page may be identified based at least in part on a number of accesses to a page table entry for the first guest memory page in a page table by an application executing in a virtual machine (VM) on the processor, the first guest memory page corresponding to a first byte-addressable memory. The execution of the VM and the application on the processor may be paused. The first guest memory page may be migrated to a target memory page in a second byte-addressable memory, the target memory page comprising one of a target host memory page and a target guest memory page, the second byte-addressable memory having an access speed faster than an access speed of the first byte-addressable memory.

公开(公告)号：US20230418762A1

公开(公告)日：2023-12-28

申请号：US18321490

申请日：2023-05-22

Applicant: Intel Corporation

Inventor： Utkarsh Y. Kakaiya ,  Sanjay Kumar ,  Rajesh M. Sankaran ,  Philip R. Lantz ,  Ashok Raj ,  Kun Tian

IPC: G06F12/1009 ,  G06F9/455 ,  G06F12/06 ,  G06F12/1081

CPC classification number: G06F12/1009 ,  G06F9/45558 ,  G06F12/063 ,  G06F12/1081 ,  G06F2009/45579 ,  G06F2009/45583 ,  G06F2009/45591

Abstract: Embodiments of apparatuses, methods, and systems for unified address translation for virtualization of input/output devices are described. In an embodiment, an apparatus includes first circuitry to use at least an identifier of a device to locate a context entry and second circuitry to use at least a process address space identifier (PASID) to locate a PASID-entry. The context entry is to include at least one of a page-table pointer to a page-table translation structure and a PASID. The PASID-entry is to include at least one of a first-level page-table pointer to a first-level translation structure and a second-level page-table pointer to a second-level translation structure. The PASID is to be supplied by the device. At least one of the apparatus, the context entry, and the PASID entry is to include one or more control fields to indicate whether the first-level page-table pointer or the second-level page-table pointer is to be used.

公开(公告)号：US11698866B2

公开(公告)日：2023-07-11

申请号：US16651786

申请日：2017-12-29

Applicant: Intel Corporation

Inventor： Utkarsh Y. Kakaiya ,  Sanjay Kumar ,  Rajesh M. Sankaran ,  Philip R. Lantz ,  Ashok Raj ,  Kun Tian

IPC: G06F12/1009 ,  G06F9/455 ,  G06F12/06 ,  G06F12/1081

CPC classification number: G06F12/1009 ,  G06F9/45558 ,  G06F12/063 ,  G06F12/1081 ,  G06F2009/45579 ,  G06F2009/45583 ,  G06F2009/45591

Abstract: Embodiments of apparatuses, methods, and systems for unified address translation for virtualization of input/output devices are described. In an embodiment, an apparatus includes first circuitry to use at least an identifier of a device to locate a context entry and second circuitry to use at least a process address space identifier (PASID) to locate a PASID-entry. The context entry is to include at least one of a page-table pointer to a page-table translation structure and a PASID. The PASID-entry is to include at least one of a first-level page-table pointer to a first-level translation structure and a second-level page-table pointer to a second-level translation structure. The PASID is to be supplied by the device. At least one of the apparatus, the context entry, and the PASID entry is to include one or more control fields to indicate whether the first-level page-table pointer or the second-level page-table pointer is to be used.

公开(公告)号：US11360914B2

公开(公告)日：2022-06-14

申请号：US17008991

申请日：2020-09-01

Applicant: Intel Corporation

Inventor： Niranjan L. Cooray ,  Abhishek R. Appu ,  Altug Koker ,  Joydeep Ray ,  Balaji Vembu ,  Pattabhiraman K ,  David Puffer ,  David J. Cowperthwaite ,  Rajesh M. Sankaran ,  Satyeshwar Singh ,  Sameer Kp ,  Ankur N. Shah ,  Kun Tian

IPC: G06F12/109 ,  G06F11/07 ,  G06F13/16 ,  G06F12/1009 ,  G06F12/1027 ,  G06F12/1036 ,  G06F12/0802 ,  G06F13/40

Abstract: An apparatus and method are described for implementing memory management in a graphics processing system. For example, one embodiment of an apparatus comprises: a first plurality of graphics processing resources to execute graphics commands and process graphics data; a first memory management unit (MMU) to communicatively couple the first plurality of graphics processing resources to a system-level MMU to access a system memory; a second plurality of graphics processing resources to execute graphics commands and process graphics data; a second MMU to communicatively couple the second plurality of graphics processing resources to the first MMU; wherein the first MMU is configured as a master MMU having a direct connection to the system-level MMU and the second MMU comprises a slave MMU configured to send memory transactions to the first MMU, the first MMU either servicing a memory transaction or sending the memory transaction to the system-level MMU on behalf of the second MMU.

公开(公告)号：US20220100675A1

公开(公告)日：2022-03-31

申请号：US17438852

申请日：2019-06-21

Applicant: Intel Corporation

Inventor： Jun Tian ,  Kun Tian ,  Yu Zhang

IPC: G06F12/1009 ,  G06F12/109 ,  G06F9/455 ,  G06F9/48

Abstract: Methods, apparatus, systems and articles of manufacture to control address space isolation in a virtual machine are disclosed. An example apparatus includes an address width adjustor to identify a memory width value corresponding to a guest memory associated with a virtual machine (VM), and generate an expanded emulated memory width value. The example apparatus also includes a memory mirror manager to generate a first guest physical address (GPA) range based on the memory width value, and generate a second GPA range based on the expanded emulated memory width value. The example apparatus also includes an EPT generator to generate root paging structures of a first type of EPT with respective addresses within the first GPA range, and generate root paging structures of a second type of EPT with respective addresses within (a) the first GPA range and (b) the second GPA range.

公开(公告)号：US20210158471A1

公开(公告)日：2021-05-27

申请号：US17099118

申请日：2020-11-16

Applicant: Intel Corporation

Inventor： Murali Ramadoss ,  Balaji Vembu ,  Eric C. Samson ,  Kun Tian ,  David J. Cowperthwaite ,  Altug Koker ,  Zhi Wang ,  Joydeep Ray ,  Subramaniam M. Maiyuran ,  Abhishek R. Appu

IPC: G06T1/20 ,  G06F9/48 ,  G06F9/50 ,  G06F9/38

Abstract: Embodiments described herein provide techniques enable a compute unit to continue processing operations when all dispatched threads are blocked. One embodiment provides for a method comprising executing multiple concurrent threads on a processing resource of a graphics processor, during execution, detecting that each of the multiple concurrent threads of the processing resource are blocked from execution, selecting a victim thread from the multiple concurrent threads, and suspending the victim thread. The thread state is stored to a thread scratch space in memory along with a blocking event associated with the victim thread.

公开(公告)号：US10929157B2

公开(公告)日：2021-02-23

申请号：US16802110

申请日：2020-02-26

Applicant: INTEL CORPORATION

Inventor： Kun Tian ,  Yao Zu Dong

IPC: G06F9/44 ,  G06F9/455 ,  G06F11/14

Abstract: Examples may include a determining a policy for primary and secondary virtual machines based on output-packet-similarities. The output-packet-similarities may be based on a comparison of time intervals via which content matched for packets outputted from the primary and secondary virtual machines. A mode may then be selected based, at least in part, on the determined policy.

公开(公告)号：US10831625B2

公开(公告)日：2020-11-10

申请号：US16080234

申请日：2016-04-01

Applicant: Intel Corporation

Inventor： Yao Zu Dong ,  Kun Tian

IPC: G06F11/00 ,  G06F11/22 ,  G06F11/14 ,  G06F11/30 ,  G06F11/34

Abstract: An apparatus and method performing debug and rollback operations using snapshots. For example, one embodiment of an apparatus comprises: a graphics processing unit (GPU) to perform graphics processing operations by executing graphics commands; a command parser to parse graphics commands submitted to the GPU and generate a list of graphics memory pages which will be affected by the graphics commands; an I/O state tracker to track I/O accesses from a graphics driver to determine a list of registers affected by the I/O accesses; snapshot circuitry and/or logic to perform a memory snapshot and I/O snapshot based on the list of graphics memory pages and the list of registers, respectively; and rollback circuitry and/or logic to perform a rollback operation using the memory snapshot and I/O snapshot in response to detecting a GPU error condition.