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公开(公告)号：US09027003B2
公开(公告)日：2015-05-05
申请号：US12059894
申请日：2008-03-31
CPC分类号： G06F9/455 , G06F11/3414 , G06F11/3476 , G06F2201/815 , G06F2201/86 , G06F2201/88
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20090249049A1
公开(公告)日：2009-10-01
申请号：US12059894
申请日：2008-03-31
IPC分类号： G06F7/42
CPC分类号： G06F9/455 , G06F11/3414 , G06F11/3476 , G06F2201/815 , G06F2201/86 , G06F2201/88
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US08832682B2
公开(公告)日：2014-09-09
申请号：US12058545
申请日：2008-03-28
IPC分类号： G06F9/455
CPC分类号： G06F9/45533 , G06F9/45558 , G06F2009/45591
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20090248611A1
公开(公告)日：2009-10-01
申请号：US12058545
申请日：2008-03-28
IPC分类号： G06F17/30
CPC分类号： G06F9/45533 , G06F9/45558 , G06F2009/45591
摘要： 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.
摘要翻译： 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。
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5.发明授权Using branch instruction counts to facilitate replay of virtual machine instruction execution 有权使用分支指令计数来促进虚拟机指令执行的重放公开(公告)号：US07844954B2
公开(公告)日：2010-11-30
申请号：US12057282
申请日：2008-03-27
IPC分类号： G06F9/44
CPC分类号： G06F11/3636 , G06F9/45558 , G06F2009/45591
摘要： 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.
摘要翻译： 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。
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6.发明申请EFFICIENT RECORDING AND REPLAYING OF NON-DETERMINISTIC INSTRUCTIONS IN A VIRTUAL MACHINE AND CPU THEREFOR 有权虚拟机和CPU中的非确定性指令的有效记录和更换公开(公告)号：US20100005464A1
公开(公告)日：2010-01-07
申请号：US12167782
申请日：2008-07-03
IPC分类号： G06F9/46
CPC分类号： G06F9/30145 , G06F9/3005 , G06F9/45533 , G06F11/301 , G06F11/3024 , G06F11/3414 , G06F11/3476
摘要： 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.
摘要翻译： 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。
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7.发明授权Efficient recording and replaying of non-deterministic instructions in a virtual machine and CPU therefor 有权在虚拟机和CPU中高效地记录和重放非确定性指令公开(公告)号：US08473946B2
公开(公告)日：2013-06-25
申请号：US12167782
申请日：2008-07-03
IPC分类号： G06F9/46
CPC分类号： G06F9/30145 , G06F9/3005 , G06F9/45533 , G06F11/301 , G06F11/3024 , G06F11/3414 , G06F11/3476
摘要： 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.
摘要翻译： 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。
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8.发明申请Using Branch Instruction Counts to Facilitate Replay of Virtual Machine Instruction Execution 有权使用分支指令计数来促进虚拟机指令执行的重放公开(公告)号：US20090119493A1
公开(公告)日：2009-05-07
申请号：US12057282
申请日：2008-03-27
CPC分类号： G06F11/3636 , G06F9/45558 , G06F2009/45591
摘要： 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.
摘要翻译： 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。
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9.发明申请Adaptive dynamic selection and application of multiple virtualization techniques 有权自适应动态选择和应用多种虚拟化技术公开(公告)号：US20080288941A1
公开(公告)日：2008-11-20
申请号：US12152517
申请日：2008-05-14
IPC分类号： G06F9/455
CPC分类号： G06F9/45558 , G06F9/45533 , G06F2009/45566 , G06F2009/45583 , G06F2009/45591
摘要： 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.
摘要翻译： 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 。
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10.发明授权Adaptive dynamic selection and application of multiple virtualization techniques 有权自适应动态选择和应用多种虚拟化技术公开(公告)号：US08561061B2
公开(公告)日：2013-10-15
申请号：US12152517
申请日：2008-05-14
IPC分类号： G06F9/455
CPC分类号： G06F9/45558 , G06F9/45533 , G06F2009/45566 , G06F2009/45583 , G06F2009/45591
摘要： 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.
摘要翻译： 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 。
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