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    Unified hypercall interface across processors in virtualized computing systems
    1.
    发明授权
    Unified hypercall interface across processors in virtualized computing systems 有权

    公开(公告)号：US11550609B2

    公开(公告)日：2023-01-10

    申请号：US16744356

    申请日：2020-01-16

    Applicant: VMware, Inc.

    Inventor： Andrei Warkentin ,  Cyprien Laplace ,  Regis Duchesne ,  Alexander Fainkichen ,  Shruthi Muralidhara Hiriyuru ,  Ye Li

    IPC: G06F9/455

    Abstract: An example method of interfacing with a hypervisor in a computing system is described, which includes a processor having at least three hierarchical privilege levels including a third privilege level more privileged than a second privilege level, the second privilege level more privileged than a first privilege level. The method includes: identifying an input/output (I/O) space instruction, not supported by the processor, to be performed for backdoor communication between the hypervisor and guest software executing in a virtual machine (VM) managed by the hypervisor, the hypervisor executing at the third privilege level; writing one or more parameters to one or more registers of the processor that are mapped to one or more unsupported registers used by the I/O space instruction; writing a value indicative of the I/O space instruction to a designated register of the processor; executing an instruction, by the guest software executing at the first or second privilege level, which is trapped to the third privilege level.

    Partitioning a hypervisor into virtual hypervisors
    2.
    发明授权
    Partitioning a hypervisor into virtual hypervisors 有权

    公开(公告)号：US11422840B2

    公开(公告)日：2022-08-23

    申请号：US14982837

    申请日：2015-12-29

    Applicant: VMware, Inc.

    Inventor： Andrei Warkentin ,  Harvey Tuch ,  Cyprien Laplace ,  Alexander Fainkichen

    IPC: G06F9/455

    Abstract: In an example, a computer system includes a hardware platform and a hypervisor executing on the hardware platform. The hypervisor includes a kernel and a plurality of user-space instances within a user-space above the kernel. Each user-space instance is isolated from each other user-space instance through namespaces. Each user-space instance includes resources confined by hierarchical resource groups. The computer system includes a plurality of virtual hypervisors, where each virtual hypervisor executes in a respective user-space instance of the plurality of user-space instances.

    Guest time scaling for a virtual machine in a virtualized computer system
    5.
    发明授权
    Guest time scaling for a virtual machine in a virtualized computer system 有权

    公开(公告)号：US12248799B2

    公开(公告)日：2025-03-11

    申请号：US17553607

    申请日：2021-12-16

    Applicant: VMware, Inc.

    Inventor： Andrei Warkentin ,  Ye Li ,  Alexander Fainkichen ,  Regis Duchesne ,  Cyprien Laplace ,  Shruthi Muralidhara Hiriyuru ,  Sunil Kumar Kotian

    IPC: G06F9/455

    Abstract: An example method of managing guest time for a virtual machine (VM) supported by a hypervisor of a virtualized host computer includes: configuring, by the hypervisor, a central processing unit (CPU) of the host computer to trap, to the hypervisor, access by guest code in the VM to a physical counter and timer of the CPU; configuring, by the hypervisor, the guest code in the VM to use the physical counter and timer of the CPU rather than a virtual counter and timer of the CPU; trapping, at the hypervisor, an access to the physical counter and timer by the guest code; and executing, by the hypervisor, the access to the physical counter and timer on behalf of the guest code while compensating for an adjustment of a system count of the physical counter and timer to maintain the guest time as scaled with respect to frequency of the physical counter and timer.

    BOOT FAILURE PROTECTION ON SMARTNICS AND OTHER COMPUTING DEVICES
    6.
    发明公开
    BOOT FAILURE PROTECTION ON SMARTNICS AND OTHER COMPUTING DEVICES 审中-公开

    公开(公告)号：US20230229558A1

    公开(公告)日：2023-07-20

    申请号：US17577714

    申请日：2022-01-18

    Applicant: VMware, Inc.

    Inventor： Andrei Warkentin ,  Jared McNeill ,  Sunil Kotian ,  Alexander Fainkichen ,  Shruthi Hiriyuru

    IPC: G06F11/14 ,  G06F11/07 ,  G06F9/455

    CPC classification number: G06F11/1417 ,  G06F11/1484 ,  G06F11/1441 ,  G06F11/0757 ,  G06F9/45541

    Abstract: Boot failure protection on smartNICs and other computing devices is described. During a power-on stage of a booting process for a computing device, a boot loading environment is directed to install an application programming interface (API) able to be invoked to control operation of a hardware-implemented watchdog. During an operating system loading stage of the booting process, the application programming interface is invoked to enable the hardware-implemented watchdog. During an operating system hand-off stage of the booting process, a last watchdog refresh of the hardware-implemented watchdog is performed, and execution of the boot loading environment is handed off to a kernel boot loader of an operating system. The application programming interface may not be accessible after the hand off to the kernel boot loader.

    Method for converting device tree data into ACPI data for edge device operating in a network
    8.
    发明授权
    Method for converting device tree data into ACPI data for edge device operating in a network 有权

    公开(公告)号：US11263019B2

    公开(公告)日：2022-03-01

    申请号：US16521434

    申请日：2019-07-24

    Applicant: VMware, Inc.

    Inventor： Andrei Warkentin ,  Cyprien Laplace ,  Ye Li ,  Alexander Fainkichen ,  Regis Duchesne

    IPC: G06F15/177 ,  G06F9/00 ,  G06F9/4401 ,  G06F16/22

    Abstract: A method for generating boot tables for a device having access to device information. It is determined whether there exists at least one system boot table stored in a memory. If it is determined that a system boot table does not exist, the device information is retrieved, and the device information is converted to at least one boot table. The converting includes generating a first boot table by populating the first boot table with information of components of the device that have a correspondence to a computer system boot information standard. The generating also includes generating a second boot table for another component of the device that does not have a correspondence to the computer system boot information standard, by creating an entry in the second boot table that is populated with an identifier used to find a compatible component defined in the computer system boot standard.

    Virtualization detection in a computing system
    9.
    发明授权
    Virtualization detection in a computing system 有权

    公开(公告)号：US10698783B2

    公开(公告)日：2020-06-30

    申请号：US15865770

    申请日：2018-01-09

    Applicant: VMware, Inc.

    Inventor： Andrei Warkentin ,  Cyprien Laplace ,  Regis Duchesne ,  Ye Li ,  Alexander Fainkichen

    IPC: G06F9/455 ,  G06F11/30 ,  G06F13/10

    Abstract: A method of detecting virtualization in a computing system, which includes a processor having at least three hierarchical privilege levels including a third privilege level more privileged than a second privilege level, the second privilege level more privileged than a first privilege level, is described. The method includes: executing a program on the processor at a privilege level less privileged than the third privilege level, the program including a load-exclusive instruction of the processor, followed by at least one instruction of the processor capable of being trapped to the third privilege level, followed by a store-exclusive instruction of the processor; and determining presence or absence of virtualization software at least a portion of which executes at the third privilege level in response to a return status of the store-exclusive instruction.

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