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1. 发明授权

US08561061B2 Adaptive dynamic selection and application of multiple virtualization techniques 有权
标题翻译：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
申请人： Keith M. Adams , Jeffrey W. Sheldon , Vyacheslav V. Malyugin
发明人： Keith M. Adams , Jeffrey W. Sheldon , Vyacheslav V. Malyugin
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。

2. 发明申请

US20110131372A1 OPTIMIZING SEGMENT ACCESS IN BINARY TRANSLATION 有权
标题翻译：在二进制翻译中优化部门访问
公开(公告)号：US20110131372A1
公开(公告)日：2011-06-02
申请号：US12629682
申请日：2009-12-02
申请人： Ross Charles KNIPPEL , Jeffrey W. SHELDON , Ole AGESEN
发明人： Ross Charles KNIPPEL , Jeffrey W. SHELDON , Ole AGESEN
IPC分类号： G06F12/08
CPC分类号： G06F9/45516 , G06F9/45558 , G06F2009/45583
摘要： A mechanism for a binary translator to emit code that will pre-generate information about a memory segment when a segment selector is assigned to a segment register. The binary translator emits code that will be executed when a memory access using that segment register is encountered and the emitted code will access the pre-generated information when evaluating the memory access request. Memory accesses, where a number of bytes being accessed is less than or equal to a predetermined value, are validated with a minimal number of steps in the code emitted by the binary translator.
摘要翻译：一种二进制转换器发出代码的机制，当段选择器被分配给段寄存器时，该代码将预先生成关于存储器段的信息。二进制翻译器发出将在遇到使用该段寄存器的存储器访问时执行的代码，并且当评估存储器访问请求时，发出的代码将访问预生成的信息。存储器访问，其中访问的字节数小于或等于预定值，以二进制翻译器发出的代码中的最小步数进行验证。

3. 发明授权

US08479195B2 Dynamic selection and application of multiple virtualization techniques 有权
标题翻译：动态选择和应用多种虚拟化技术
公开(公告)号：US08479195B2
公开(公告)日：2013-07-02
申请号：US12057191
申请日：2008-03-27
申请人： Keith M. Adams , Jeffrey W. Sheldon
发明人： Keith M. Adams , Jeffrey W. Sheldon
IPC分类号： G06F9/455
CPC分类号： G06F9/45504 , G06F9/45558 , G06F11/3414 , G06F11/3419 , G06F11/3447 , G06F11/3476 , G06F2009/45566 , G06F2201/815
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 subsystems that each provide for the comprehensive handling of potential virtualization exceptions. A virtual machine monitor resident performance monitor computes relative virtualization overhead costs that are and would be incurred in using different virtualization support subsystems for virtualization exceptions that occur in executing a guest operating system within a defined interval. Dependent on the relative virtualization overhead costs determined, the virtual machine monitor resident virtualization selection control switches the virtual machine monitor to use the optimal virtualization support subsystem for handling virtualization exceptions that occur over a second defined interval.
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子系统，每个虚拟化支持子系统都可以全面处理潜在的虚拟化异常。虚拟机监视器驻留性能监视器计算在使用不同的虚拟化支持子系统以在定义的间隔内执行客户机操作系统时发生的虚拟化异常所引起并将会引起的相对虚拟化开销成本。依赖于确定的相对虚拟化开销成本，虚拟机监视器驻留虚拟化选择控制切换虚拟机监视器以使用最佳虚拟化支持子系统来处理在第二个定义的间隔内发生的虚拟化异常。

4. 发明申请

US20120284714A1 VIRTUAL MACHINE FAULT TOLERANCE 审中-公开
标题翻译：虚拟机故障容错
公开(公告)号：US20120284714A1
公开(公告)日：2012-11-08
申请号：US13471616
申请日：2012-05-15
申请人： Ganesh VENKITACHALAM , Rohit JAIN , Boris WEISSMAN , Daniel J. SCALES , Vyacheslav MALYUGIN , Jeffrey W. SHELDON , Min XU
发明人： Ganesh VENKITACHALAM , Rohit JAIN , Boris WEISSMAN , Daniel J. SCALES , Vyacheslav MALYUGIN , Jeffrey W. SHELDON , Min XU
IPC分类号： G06F9/455
CPC分类号： G06F11/1658 , G06F9/45533 , G06F9/45558 , G06F9/4881 , G06F11/0712 , G06F11/0766 , G06F11/079 , G06F2009/45579 , G06F2009/45591 , G06F2201/805 , G06F2201/815 , G06F2201/82
摘要： In a computer system running at least a first virtual machine (VM) and a second VM on virtualization software, a computer implemented method for the second VM to provide quasi-lockstep fault tolerance for the first VM. The method includes enabling operations of the second VM to diverge from being in lockstep with operations with the first VM without resynchronizing the second VM with the first VM, if output of the second VM is not diverging from output of the first VM. The output of the second VM is compared with the output of the first VM to determine whether the output of the second VM has diverged from the output of the first VM. In response to a determination that the output of the second VM has diverged from the output of the first VM, a resynchronization of the second VM is executed.
摘要翻译：在运行虚拟化软件上的至少第一虚拟机（VM）和第二虚拟机的计算机系统中，用于所述第二虚拟机为所述第一虚拟机提供准锁步骤容错的计算机实现的方法。该方法包括如果第二VM的输出不与第一VM的输出分离，则第二VM的启用操作使得与第一VM的操作不同步，而不与第一VM重新同步第二VM。将第二VM的输出与第一VM的输出进行比较，以确定第二个VM的输出是否与第一个VM的输出分离。响应于确定第二VM的输出已经从第一VM的输出分离，执行第二VM的重新同步。

5. 发明授权

US07487314B1 Restricting memory access to protect data when sharing a common address space 有权
公开(公告)号：US07487314B1
公开(公告)日：2009-02-03
申请号：US11865658
申请日：2007-10-01
申请人： Ole Agesen , Jeffrey W. Sheldon
发明人： Ole Agesen , Jeffrey W. Sheldon
IPC分类号： G06F12/00
CPC分类号： G06F12/1027 , G06F12/1475 , G06F2212/656
摘要： A first software entity occupies a portion of a linear address space of a second software entity and prevents the second software entity from accessing the memory of the first software entity. For example, in one embodiment of the invention, the first software entity is a virtual machine monitor (VMM), which supports a virtual machine (VM), the second software entity. The VMM sometimes directly executes guest instructions from the VM and, at other times, the VMM executes binary translated instructions derived from guest instructions. When executing binary translated instructions, the VMM uses memory segmentation to protect its memory. When directly executing guest instructions, the VMM may use either memory segmentation or a memory paging mechanism to protect its memory. When the memory paging mechanism is active during direct execution, the protection from the memory segmentation mechanism may be selectively deactivated to improve the efficiency of the virtual computer system.

6. 发明申请

US20080288941A1 Adaptive dynamic selection and application of multiple virtualization techniques 有权
标题翻译：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
申请人： Keith M. Adams , Jeffrey W. Sheldon , Vyacheslav V. Malyugin
发明人： Keith M. Adams , Jeffrey W. Sheldon , Vyacheslav V. Malyugin
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。

7. 发明授权

US07281102B1 Restricting memory access to protect data when sharing a common address space 有权
公开(公告)号：US07281102B1
公开(公告)日：2007-10-09
申请号：US10917713
申请日：2004-08-12
申请人： Ole Agesen , Jeffrey W. Sheldon
发明人： Ole Agesen , Jeffrey W. Sheldon
IPC分类号： G06F12/00
CPC分类号： G06F12/1458 , G06F12/1036 , G06F12/109 , G06F12/145 , G06F2212/656
摘要： A first software entity occupies a portion of a linear address space of a second software entity and prevents the second software entity from accessing the memory of the first software entity. For example, in one embodiment of the invention, the first software entity is a virtual machine monitor (VMM), which supports a virtual machine (VM), the second software entity. The VMM sometimes directly executes guest instructions from the VM and, at other times, the VMM executes binary translated instructions derived from guest instructions. When executing binary translated instructions, the VMM uses memory segmentation to protect its memory. When directly executing guest instructions, the VMM may use either memory segmentation or a memory paging mechanism to protect its memory. When the memory paging mechanism is active during direct execution, the protection from the memory segmentation mechanism may be selectively deactivated to improve the efficiency of the virtual computer system.

8. 发明授权

US07277999B1 Restricting memory access to protect data when sharing a common address space 有权
公开(公告)号：US07277999B1
公开(公告)日：2007-10-02
申请号：US10918044
申请日：2004-08-12
申请人： Ole Agesen , Jeffrey W. Sheldon
发明人： Ole Agesen , Jeffrey W. Sheldon
IPC分类号： G06F12/00
CPC分类号： G06F12/1027 , G06F12/1475 , G06F2212/656
摘要： A first software entity occupies a portion of a linear address space of a second software entity and prevents the second software entity from accessing the memory of the first software entity. For example, in one embodiment of the invention, the first software entity is a virtual machine monitor (VMM), which supports a virtual machine (VM), the second software entity. The VMM sometimes directly executes guest instructions from the VM and, at other times, the VMM executes binary translated instructions derived from guest instructions. When executing binary translated instructions, the VMM uses memory segmentation to protect its memory. When directly executing guest instructions, the VMM may use either memory segmentation or a memory paging mechanism to protect its memory. When the memory paging mechanism is active during direct execution, the protection from the memory segmentation mechanism may be selectively deactivated to improve the efficiency of the virtual computer system.

9. 发明授权

US09459895B2 Virtual machine fault tolerance 有权
标题翻译：虚拟机容错
公开(公告)号：US09459895B2
公开(公告)日：2016-10-04
申请号：US13471616
申请日：2012-05-15
申请人： Ganesh Venkitachalam , Rohit Jain , Boris Weissman , Daniel J. Scales , Vyacheslav Malyugin , Jeffrey W. Sheldon , Min Xu
发明人： Ganesh Venkitachalam , Rohit Jain , Boris Weissman , Daniel J. Scales , Vyacheslav Malyugin , Jeffrey W. Sheldon , Min Xu
IPC分类号： G06F9/455 , G06F11/07
CPC分类号： G06F11/1658 , G06F9/45533 , G06F9/45558 , G06F9/4881 , G06F11/0712 , G06F11/0766 , G06F11/079 , G06F2009/45579 , G06F2009/45591 , G06F2201/805 , G06F2201/815 , G06F2201/82
摘要： In a computer system running at least a first virtual machine (VM) and a second VM on virtualization software, a computer implemented method for the second VM to provide quasi-lockstep fault tolerance for the first VM. The method includes enabling operations of the second VM to diverge from being in lockstep with operations with the first VM without resynchronizing the second VM with the first VM, if output of the second VM is not diverging from output of the first VM. The output of the second VM is compared with the output of the first VM to determine whether the output of the second VM has diverged from the output of the first VM. In response to a determination that the output of the second VM has diverged from the output of the first VM, a resynchronization of the second VM is executed.
摘要翻译：在运行虚拟化软件上的至少第一虚拟机（VM）和第二虚拟机的计算机系统中，用于所述第二虚拟机为所述第一虚拟机提供准锁步骤容错的计算机实现的方法。该方法包括如果第二VM的输出不与第一VM的输出分离，则第二VM的启用操作使得与第一VM的操作不同步，而不与第一VM重新同步第二VM。将第二VM的输出与第一VM的输出进行比较，以确定第二个VM的输出是否与第一个VM的输出分离。响应于确定第二VM的输出已经从第一VM的输出分离，执行第二VM的重新同步。

10. 发明授权

US07487313B1 Restricting memory access to protect data when sharing a common address space 有权
公开(公告)号：US07487313B1
公开(公告)日：2009-02-03
申请号：US11865635
申请日：2007-10-01
申请人： Ole Agesen , Jeffrey W. Sheldon
发明人： Ole Agesen , Jeffrey W. Sheldon
IPC分类号： G06F12/00
CPC分类号： G06F12/1036 , G06F12/1475 , G06F2212/656
摘要： A first software entity occupies a portion of a linear address space of a second software entity and prevents the second software entity from accessing the memory of the first software entity. For example, in one embodiment of the invention, the first software entity is a virtual machine monitor (VMM), which supports a virtual machine (VM), the second software entity. The VMM sometimes directly executes guest instructions from the VM and, at other times, the VMM executes binary translated instructions derived from guest instructions. When executing binary translated instructions, the VMM uses memory segmentation to protect its memory. When directly executing guest instructions, the VMM may use either memory segmentation or a memory paging mechanism to protect its memory. When the memory paging mechanism is active during direct execution, the protection from the memory segmentation mechanism may be selectively deactivated to improve the efficiency of the virtual computer system.

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