公开(公告)号：US08561061B2

公开(公告)日：2013-10-15

申请号：US12152517

申请日：2008-05-14

Applicant: Keith M. Adams ,  Jeffrey W. Sheldon ,  Vyacheslav V. Malyugin

Inventor： Keith M. Adams ,  Jeffrey W. Sheldon ,  Vyacheslav V. Malyugin

IPC: G06F9/455

CPC classification number: G06F9/45558 ,  G06F9/45533 ,  G06F2009/45566 ,  G06F2009/45583 ,  G06F2009/45591

Abstract: Autonomous selection between multiple virtualization techniques implemented in a virtualization layer of a virtualized computer system. The virtual machine monitor implements multiple virtualization support processors that each provide for the comprehensive handling of potential virtualization exceptions. A virtual machine monitor resident virtualization selection control is operable to select between use of first and second virtualization support processors dependent on identifying a predetermined pattern of temporally local privilege dependent instructions within a portion of an instruction stream as encountered in the execution of a guest operating system.

Abstract translation: 在虚拟化计算机系统的虚拟化层中实现的多个虚拟化技术之间的自主选择。 虚拟机监视器实现多个虚拟化支持处理器，每个虚拟化支持处理器都可以全面处理潜在的虚拟化异常。 虚拟机监视器驻留虚拟化选择控制可操作以在使用第一和第二虚拟化支持处理器之间进行选择，这取决于在客户机操作系统的执行中遇到的指令流的一部分内识别时间上依赖于本地特权依赖指令的预定模式 。

公开(公告)号：US08463825B1

公开(公告)日：2013-06-11

申请号：US13094682

申请日：2011-04-26

Applicant: Kieran J. Harty ,  Mark G. Gritter ,  Raj A. Sudarsanam ,  Zubin D. Dittia ,  Brandon W. Salmon ,  Vyacheslav V. Malyugin

Inventor： Kieran J. Harty ,  Mark G. Gritter ,  Raj A. Sudarsanam ,  Zubin D. Dittia ,  Brandon W. Salmon ,  Vyacheslav V. Malyugin

IPC: G06F17/30 ,  G06F13/00

CPC classification number: G06F17/30233 ,  G06F3/0605 ,  G06F3/0647 ,  G06F3/0685

Abstract: A data storage system is disclosed, including: a first storage device of a first storage device type, a second storage device of a second storage device type, and a processor configured to implement a hybrid file system configured to store each of a plurality of data values in at least a corresponding primary location, which for a given data value may be in either the first storage device or the second storage device; wherein the hybrid file system is configured to use a first access approach optimized based on a first access attribute of the first storage device type to interact with the first storage device and a second access approach optimized based on a second access attribute of the second storage device type to interact with the second storage device. Reading data is disclosed, including: determining that a storage location on a first tier storage from which a requested data was written back to a second tier storage has not been reclaimed by a garbage collection associated with the first tier storage, and retrieving the data from the storage location on the first tier storage.

Abstract translation: 公开了一种数据存储系统，包括：第一存储设备类型的第一存储设备，第二存储设备类型的第二存储设备和被配置为实现被配置为存储多个数据中的每一个的混合文件系统的处理器 至少对应的主要位置的值，对于给定的数据值可以在第一存储设备或第二存储设备中; 其中所述混合文件系统被配置为使用基于所述第一存储设备类型的第一访问属性优化的第一访问方法来与所述第一存储设备交互，以及基于所述第二存储设备的第二访问属性优化的第二访问方法 类型以与第二存储设备交互。 公开了读取数据，包括：确定在第一层存储器上存储所请求的数据被写回第二层存储器的存储位置尚未被与第一层存储相关联的垃圾收集回收，并且从 第一层存储上的存储位置。

公开(公告)号：US07844954B2

公开(公告)日：2010-11-30

申请号：US12057282

申请日：2008-03-27

Applicant: Ganesh Venkitachalam ,  Michael Nelson ,  Boris Weissman ,  Min Xu ,  Vyacheslav V. Malyugin

Inventor： Ganesh Venkitachalam ,  Michael Nelson ,  Boris Weissman ,  Min Xu ,  Vyacheslav V. Malyugin

IPC: G06F9/44

CPC classification number: G06F11/3636 ,  G06F9/45558 ,  G06F2009/45591

Abstract: A method and computer program product for logging non-deterministic events of a virtual machine executing a sequence guest instructions, the method including tracking an execution point in the sequence of executing guest instructions, the tracking of the execution point including determining a branch count of executed branch instructions; and detecting an occurrence of a non-deterministic event directed to the virtual machine during execution of the sequence of guest instructions, and recording information which includes an identifier of a current execution point, wherein the identifier includes the branch count.

Abstract translation: 一种用于记录执行序列访客指令的虚拟机的非确定性事件的方法和计算机程序产品，所述方法包括跟踪执行访客指令序列中的执行点，执行点的跟踪包括确定执行的分支计数 分支指示; 以及在执行所述访客指令序列期间检测指向所述虚拟机的非确定性事件的发生，以及记录包括当前执行点的标识符的信息，其中所述标识符包括所述分支计数。

公开(公告)号：US20100005464A1

公开(公告)日：2010-01-07

申请号：US12167782

申请日：2008-07-03

Applicant: Vyacheslav V. Malyugin ,  Min Xu ,  Boris Weissman ,  Ganesh Venkitachalam ,  Alexander Klaiber

Inventor： Vyacheslav V. Malyugin ,  Min Xu ,  Boris Weissman ,  Ganesh Venkitachalam ,  Alexander Klaiber

IPC: G06F9/46

CPC classification number: G06F9/30145 ,  G06F9/3005 ,  G06F9/45533 ,  G06F11/301 ,  G06F11/3024 ,  G06F11/3414 ,  G06F11/3476

Abstract: The output of a non-deterministic instruction is handled during record and replay in a virtual machine. An output of a non-deterministic instruction is stored to a buffer during record mode and retrieved from a buffer during replay mode without exiting to the hypervisor. At least part of the contents of the buffer can be stored to a log when the buffer is full during record mode, and the buffer can be replenished from a log when the buffer is empty during replay mode.

Abstract translation: 非确定性指令的输出在虚拟机中的记录和重放期间被处理。 非确定性指令的输出在记录模式下被存储到缓冲器，并且在重放模式期间从缓冲器检索，而不退出管理程序。 当缓冲区在记录模式期间满时，缓冲区内容的至少一部分可以存储到日志中，并且当缓冲区在重放模式期间为空时，缓冲区可以从日志补充。

公开(公告)号：US20080288941A1

公开(公告)日：2008-11-20

申请号：US12152517

申请日：2008-05-14

Applicant: Keith M. Adams ,  Jeffrey W. Sheldon ,  Vyacheslav V. Malyugin

Inventor： Keith M. Adams ,  Jeffrey W. Sheldon ,  Vyacheslav V. Malyugin

IPC: G06F9/455

CPC classification number: G06F9/45558 ,  G06F9/45533 ,  G06F2009/45566 ,  G06F2009/45583 ,  G06F2009/45591

Abstract: Autonomous selection between multiple virtualization techniques implemented in a virtualization layer of a virtualized computer system. The virtual machine monitor implements multiple virtualization support processors that each provide for the comprehensive handling of potential virtualization exceptions. A virtual machine monitor resident virtualization selection control is operable to select between use of first and second virtualization support processors dependent on identifying a predetermined pattern of temporally local privilege dependent instructions within a portion of an instruction stream as encountered in the execution of a guest operating system.

Abstract translation: 在虚拟化计算机系统的虚拟化层中实现的多个虚拟化技术之间的自主选择。 虚拟机监视器实现多个虚拟化支持处理器，每个虚拟化支持处理器都可以全面处理潜在的虚拟化异常。 虚拟机监视器驻留虚拟化选择控制可操作以在使用第一和第二虚拟化支持处理器之间进行选择，这取决于在客户机操作系统的执行中遇到的指令流的一部分内识别时间上依赖于本地特权依赖指令的预定模式 。

公开(公告)号：US09027003B2

公开(公告)日：2015-05-05

申请号：US12059894

申请日：2008-03-31

Applicant: Boris Weissman ,  Vyacheslav V. Malyugin ,  Petr Vandrovec ,  Ganesh Venkitachalam ,  Min Xu

Inventor： Boris Weissman ,  Vyacheslav V. Malyugin ,  Petr Vandrovec ,  Ganesh Venkitachalam ,  Min Xu

IPC: G06F9/44 ,  G06F9/455 ,  G06F11/34

CPC classification number: G06F9/455 ,  G06F11/3414 ,  G06F11/3476 ,  G06F2201/815 ,  G06F2201/86 ,  G06F2201/88

Abstract: A method for precisely counting guest branch instructions in a virtualized computer system is described. In one embodiment, guest instructions execute in a direct execution mode of the virtualized computer system. The direct execution mode operates at a first privilege level having a lower privilege than a second privilege level. A branch count of previously executed first privilege level branch instructions is maintained as instructions execute. Execution of a first privilege level branch instruction caused by a control transfer to the direct execution mode is detected. Responsive to the detection, a guest branch instruction count is determined based on the first privilege level branch count.

Abstract translation: 描述了一种用于精确计算虚拟化计算机系统中的来宾分支指令的方法。 在一个实施例中，客户指令以虚拟化计算机系统的直接执行模式执行。 直接执行模式在具有比第二特权级别更低的特权的第一权限级别下操作。 先前执行的第一特权级别分支指令的分支计数被保持为指令执行。 检测由控制转移到直接执行模式引起的第一特权级分支指令的执行。 响应于检测，基于第一权限级别分支计数确定客户分支指令计数。

公开(公告)号：US08909894B1

公开(公告)日：2014-12-09

申请号：US13421712

申请日：2012-03-15

Applicant: Pratap V. Singh ,  Vyacheslav V. Malyugin ,  Mark G. Gritter ,  Edward K. Lee

Inventor： Pratap V. Singh ,  Vyacheslav V. Malyugin ,  Mark G. Gritter ,  Edward K. Lee

IPC: G06F12/00

CPC classification number: G06F9/5077 ,  G06F3/061 ,  G06F3/064 ,  G06F3/067 ,  G06F3/0685 ,  G06F11/00 ,  G06F12/00 ,  G06F12/02 ,  G06F12/06 ,  G06F12/0646 ,  G06F12/0868 ,  G06F12/0871 ,  G06F13/00 ,  G06F13/12 ,  G06F13/122 ,  G06F13/124

Abstract: Automatically aligning virtual blocks of partitions to blocks of underlying physical storage is disclosed. In some embodiments, a starting offset of a first partition included in a logical container is detected. In some embodiments, a misalignment correction amount for a first partition included in a logical container is detected. In some embodiments, a misalignment associated with a first partition included in a logical container is corrected.

Abstract translation: 公开了将分区的虚拟块自动对准底层物理存储块。 在一些实施例中，检测包括在逻辑容器中的第一分区的起始偏移。 在一些实施例中，检测包括在逻辑容器中的第一分区的未对准校正量。 在一些实施例中，校正与逻辑容器中包括的第一分区相关联的未对准。

公开(公告)号：US08473946B2

公开(公告)日：2013-06-25

申请号：US12167782

申请日：2008-07-03

Applicant: Vyacheslav V. Malyugin ,  Min Xu ,  Boris Weissman ,  Ganesh Venkitachalam ,  Alexander Klaiber

Inventor： Vyacheslav V. Malyugin ,  Min Xu ,  Boris Weissman ,  Ganesh Venkitachalam ,  Alexander Klaiber

IPC: G06F9/46

CPC classification number: G06F9/30145 ,  G06F9/3005 ,  G06F9/45533 ,  G06F11/301 ,  G06F11/3024 ,  G06F11/3414 ,  G06F11/3476

Abstract: The output of a non-deterministic instruction is handled during record and replay in a virtual machine. An output of a non-deterministic instruction is stored to a buffer during record mode and retrieved from a buffer during replay mode without exiting to the hypervisor. At least part of the contents of the buffer can be stored to a log when the buffer is full during record mode, and the buffer can be replenished from a log when the buffer is empty during replay mode.

Abstract translation: 非确定性指令的输出在虚拟机中的记录和重放期间被处理。 非确定性指令的输出在记录模式下被存储到缓冲器中，并且在重放模式期间从缓冲器中检索，而不退出管理程序。 当缓冲区在记录模式期间满时，缓冲区内容的至少一部分可以存储到日志中，并且当缓冲区在重放模式期间为空时，缓冲区可以从日志补充。

公开(公告)号：US08832682B2

公开(公告)日：2014-09-09

申请号：US12058545

申请日：2008-03-28

Applicant: Min Xu ,  Vyacheslav V. Malyugin ,  Jeffrey W. Sheldon ,  Ganesh Venkitachalam ,  Boris Weissman

Inventor： Min Xu ,  Vyacheslav V. Malyugin ,  Jeffrey W. Sheldon ,  Ganesh Venkitachalam ,  Boris Weissman

IPC: G06F9/455

CPC classification number: G06F9/45533 ,  G06F9/45558 ,  G06F2009/45591

Abstract: One embodiment is a computer-implemented method of trace collection for a virtual machine that includes: executing a sequence of instructions from an initial state of the virtual machine; accessing an event log of data relating to nondeterministic events, which data includes an execution point; making at least a portion of the data available to the virtual machine when the sequence reaches the execution point; collecting trace information in response to expansion parameters; and storing the trace information in a trace file.

Abstract translation: 一个实施例是用于虚拟机的跟踪收集的计算机实现的方法，包括：从虚拟机的初始状态执行指令序列; 访问与非确定性事件有关的数据的事件日志，所述数据包括执行点; 当所述序列到达所述执行点时，使所述数据的至少一部分可用于所述虚拟机; 根据扩展参数收集跟踪信息; 并将跟踪信息存储在跟踪文件中。

公开(公告)号：US20090248611A1

公开(公告)日：2009-10-01

申请号：US12058545

申请日：2008-03-28

Applicant: Min Xu ,  Vyacheslav V. Malyugin ,  Jeffrey W. Sheldon ,  Ganesh Venkitachalam ,  Boris Weissman

Inventor： Min Xu ,  Vyacheslav V. Malyugin ,  Jeffrey W. Sheldon ,  Ganesh Venkitachalam ,  Boris Weissman

IPC: G06F17/30

CPC classification number: G06F9/45533 ,  G06F9/45558 ,  G06F2009/45591

Abstract: One embodiment is a computer-implemented method of trace collection for a virtual machine that includes: executing a sequence of instructions from an initial state of the virtual machine; accessing an event log of data relating to nondeterministic events, which data includes an execution point; making at least a portion of the data available to the virtual machine when the sequence reaches the execution point; collecting trace information in response to expansion parameters; and storing the trace information in a trace file.

Abstract translation: 一个实施例是用于虚拟机的跟踪收集的计算机实现的方法，包括：从虚拟机的初始状态执行指令序列; 访问与非确定性事件有关的数据的事件日志，所述数据包括执行点; 当所述序列到达所述执行点时，使所述数据的至少一部分可用于所述虚拟机; 根据扩展参数收集跟踪信息; 并将跟踪信息存储在跟踪文件中。