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    APPARATUS AND METHOD FOR MANAGING UNSUPPORTED INSTRUCTION SET ARCHITECTURE (ISA) FEATURES IN A VIRTUALIZED ENVIRONMENT
    6.
    发明申请
    APPARATUS AND METHOD FOR MANAGING UNSUPPORTED INSTRUCTION SET ARCHITECTURE (ISA) FEATURES IN A VIRTUALIZED ENVIRONMENT 有权

    公开(公告)号：US20220308867A1

    公开(公告)日：2022-09-29

    申请号：US17214572

    申请日：2021-03-26

    Applicant: Intel Corporation

    Inventor： Tyler SONDAG ,  David SHEFFIELD ,  Sofia PEDIADITAKI

    IPC: G06F9/22 ,  G06F9/455

    Abstract: An apparatus and method for supporting deprecated instructions. For example, one embodiment of a processor comprises: A processor comprising: a plurality of cores, each core comprising a current microarchitecture to execute instructions and process data, the current microarchitecture including hardware support for virtual execution environment comprising a hypervisor running at a first privilege level and one or more virtual machines each running at a second privilege level, the microarchitecture further including partial hardware support for executing deprecated instructions associated with a prior microarchitecture; at least one core of the plurality of cores comprising: a decoder to decode the instructions, the decoder to specify one or more microoperations corresponding to each of the instructions; execution circuitry to execute the corresponding microoperations; wherein either a first type or a second type of virtual machine exit is to be performed responsive to detecting a deprecated instruction in a first virtual machine, wherein responsive to the first type of virtual machine exit, the hypervisor is to perform a first emulation of the prior microarchitecture without reliance on the partial hardware support, and wherein responsive to the second type of virtual machine exit, the hypervisor is to perform a second emulation of the prior microarchitecture relying on the partial hardware support.

    APPARATUS AND METHOD FOR MANAGING DEPRECATED INSTRUCTION SET ARCHITECTURE (ISA) FEATURES
    7.
    发明公开
    APPARATUS AND METHOD FOR MANAGING DEPRECATED INSTRUCTION SET ARCHITECTURE (ISA) FEATURES 审中-公开

    公开(公告)号：US20240143361A1

    公开(公告)日：2024-05-02

    申请号：US17958336

    申请日：2022-10-01

    Applicant: Intel Corporation

    Inventor： Tyler SONDAG ,  Andreas KLEEN ,  David SHEFFIELD ,  Xiang ZOU ,  Terry PARKS ,  Jason BRANDT ,  Ittai ANATI

    IPC: G06F9/455 ,  G06F9/30 ,  G06F9/38

    CPC classification number: G06F9/45558 ,  G06F9/3016 ,  G06F9/3802 ,  G06F2009/45591

    Abstract: An apparatus and method for implementing a new virtualized execution environment while supporting instructions and operations of a legacy virtualized execution environment. For example, one embodiment of a processor comprises: instruction processing circuitry to process instructions in accordance with a microarchitecture, the instruction processing circuitry comprising: instruction fetch circuitry to fetch the instructions; a decoder to decode the instructions; and execution circuitry to execute the instructions based on the microarchitecture; wherein the microarchitecture including hardware support for a virtual execution environment including a virtual machine monitor (VMM) and a first type of virtual machine, wherein both the VMM and the first type of virtual machine are implemented by instructions directly supported by the microarchitecture; and wherein the VMM is to support a second type of virtual machine, the second type of virtual machine including legacy instructions not fully supported by the microarchitecture, the VMM comprising a plurality of emulators, each emulator configured to emulate execution of a different type of the legacy instructions.

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