公开(公告)号：US07580826B2

公开(公告)日：2009-08-25

申请号：US10883620

申请日：2004-06-30

申请人： Rene Antonio Vega ,  Eric P. Traut

发明人： Rene Antonio Vega ,  Eric P. Traut

IPC分类号： G06G7/48 ,  G06F7/62 ,  G06F9/44 ,  G06F9/455

CPC分类号： G06F9/45558 ,  G06F2009/45579

摘要： The present invention discloses dynamically adding virtual devices to a virtual computing environment. The system described in the invention includes a virtualized computing system with a manifest, which further includes device lists and an external device directory, which provides users of the virtualized computing system with a directory for adding software plug-ins that contain specifications needed to add virtual devices to the virtual computing environment. Certain embodiments are specifically directed to providing a method of adding and configuring virtual devices. Certain embodiments are specifically directed to providing a method of operating a virtualized computing system wherein the host operating system and the virtual devices progress through a series of states, such as: initializing, powering up, loading a stored state, operating in normal state, saving state for future restoration, powering down, and tearing down and turning off.

摘要翻译： 本发明公开了将虚拟设备动态地添加到虚拟计算环境。 本发明中描述的系统包括具有清单的虚拟化计算系统，其还包括设备列表和外部设备目录，其向虚拟化计算系统的用户提供用于添加软件插件的目录，所述目录包含添加虚拟 设备到虚拟计算环境。 某些实施例具体涉及提供一种添加和配置虚拟设备的方法。 某些实施例具体涉及提供一种操作虚拟化计算系统的方法，其中主机操作系统和虚拟设备通过一系列状态进行，例如：初始化，上电，加载存储状态，以正常状态运行，保存 未来恢复状态，断电，断电和关闭。

公开(公告)号：US07533207B2

公开(公告)日：2009-05-12

申请号：US11635455

申请日：2006-12-06

申请人： Eric P. Traut ,  Rene Antonio Vega ,  Shuvabrata Ganguly

发明人： Eric P. Traut ,  Rene Antonio Vega ,  Shuvabrata Ganguly

IPC分类号： G06F9/48

CPC分类号： G06F9/45533 ,  G06F9/4812 ,  G06F13/24

摘要： Various operations are disclosed for improving the operational efficiency of interrupt handling in a virtualized environment. A virtualized interrupt controller may obviate the need for an explicit end-of-interrupt command by providing an automatic EOI capability even when a physical interrupt controller offers no such mechanism. The use of a message pending bit for inter-partition communications facilitates avoiding an EOI command of inter-processor interrupts used in inter-partition communications whenever no further messages are cued for a particular message slot. A virtualized interrupt controller facilitates the selective EOI of an interrupt even when it is not the highest priority in-service interrupt irrespective of whether a physical interrupt controller provides such functionality.

摘要翻译： 公开了用于提高虚拟化环境中的中断处理的操作效率的各种操作。 即使当物理中断控制器不提供这样的机制时，虚拟化中断控制器也可以通过提供自动EOI功能来消除对显式终止中断命令的需要。 使用消息等待位进行分区间通信有助于避免在分组间通信中使用的处理器间中断的EOI命令，无论对于特定消息时隙没有进一步的消息被提示。 即使虚拟中断控制器不是最高优先级的在役中断，无论物理中断控制器是否提供这样的功能，虚拟中断控制器便于中断的选择性EOI。

公开(公告)号：US07434003B2

公开(公告)日：2008-10-07

申请号：US11274907

申请日：2005-11-15

申请人： Adrian J. Oney ,  Bryan Mark Willman ,  Eric P. Traut ,  Forrest Curtis Foltz ,  John Te-Jui Sheu ,  Matthew D. Hendel ,  Rene Antonio Vega

发明人： Adrian J. Oney ,  Bryan Mark Willman ,  Eric P. Traut ,  Forrest Curtis Foltz ,  John Te-Jui Sheu ,  Matthew D. Hendel ,  Rene Antonio Vega

IPC分类号： G06F12/10

CPC分类号： G06F21/575 ,  G06F21/53 ,  G06F21/6245

摘要： An operating system is described that is capable of ascertaining whether it is executing in a virtual machine environment and is further capable of modifying its behavior to operate more efficiently and provide optimal behavior in a virtual machine environment. An operating system is enlightened so that it is aware of VMMs or hypervisors, taking on behavior that is optimal to that environment. The VMM or hypervisor informs the operating system of the optimal behavior, and vice versa.

摘要翻译： 描述了能够确定其是否在虚拟机环境中执行并且还能够修改其行为以更有效地操作并在虚拟机环境中提供最佳行为的操作系统。 操作系统被启发，以便它知道VMM或虚拟机管理程序，采取对该环境最佳的行为。 VMM或管理程序通知操作系统的最佳行为，反之亦然。

公开(公告)号：US20080134174A1

公开(公告)日：2008-06-05

申请号：US11634538

申请日：2006-12-05

申请人： John Te-Jui Sheu ,  Matthew D. Hendel ,  Landy Wang ,  Ernest S. Cohen ,  Rene Antonio Vega ,  Sharvil A. Nanavati

发明人： John Te-Jui Sheu ,  Matthew D. Hendel ,  Landy Wang ,  Ernest S. Cohen ,  Rene Antonio Vega ,  Sharvil A. Nanavati

IPC分类号： G06F12/10 ,  G06F9/46

CPC分类号： G06F12/1036

摘要： Various operations are disclosed for improving the operational efficiency of a virtual translation look-aside buffer (TLB) in a virtual machine environment. For example, operations are disclosed that allow for determination of whether present entries in shadow page tables (SPTs) are stale by comparing shadowed guest page table (GPT) entries against snapshots taken when the entries were cached. Other operations are disclosed that allow a virtual machine monitor (VMM) to access shadow page table trees (SPTTs) by walking trees in software or in hardware. Still other operations are disclosed allowing the VMM to use a hash table to relate GVA ranges to SPTs that map them, thus significantly reducing the cost of having to walk each SPTT in order to invalidate desired GVA(s). And, finally, operations are disclosed allowing the VMM to determine global GVA ranges by checking a bitmap, when invalidating global GVAs.

摘要翻译： 公开了用于提高虚拟机环境中的虚拟翻译后备缓冲器（TLB）的操作效率的各种操作。 例如，披露了允许通过比较阴影的访客页表（GPT）条目与条目被缓存时拍摄的快照来确定影子页表（SPT）中的现有条目是否过时的操作。 公开了允许虚拟机监视器（VMM）通过软件或硬件中的步行树来访问影子页表树（SPTT）的其他操作。 还公开了其他操作，允许VMM使用散列表将GVA范围与映射它们的SPT相关联，从而显着降低了必须走每个SPTT以使所需GVA无效的成本。 最后，公开了操作，允许VMM通过在使全局GVAs无效时检查位图来确定全局GVA范围。

公开(公告)号：US08694712B2

公开(公告)日：2014-04-08

申请号：US11634538

申请日：2006-12-05

申请人： John Te-Jui Sheu ,  Matthew D. Hendel ,  Landy Wang ,  Ernest S. Cohen ,  Rene Antonio Vega ,  Sharvil A. Nanavati

发明人： John Te-Jui Sheu ,  Matthew D. Hendel ,  Landy Wang ,  Ernest S. Cohen ,  Rene Antonio Vega ,  Sharvil A. Nanavati

IPC分类号： G06F12/00 ,  G06F9/455

CPC分类号： G06F12/1036

摘要： Various operations are disclosed for improving the operational efficiency of a virtual translation look-aside buffer (TLB) in a virtual machine environment. For example, operations are disclosed that allow for determination of whether present entries in shadow page tables (SPTs) are stale by comparing shadowed guest page table (GPT) entries against snapshots taken when the entries were cached. Other operations are disclosed that allow a virtual machine monitor (VMM) to access shadow page table trees (SPTTs) by walking trees in software or in hardware. Still other operations are disclosed allowing the VMM to use a hash table to relate GVA ranges to SPTs that map them, thus significantly reducing the cost of having to walk each SPTT in order to invalidate desired GVA(s). And, finally, operations are disclosed allowing the VMM to determine global GVA ranges by checking a bitmap, when invalidating global GVAs.

摘要翻译： 公开了用于提高虚拟机环境中的虚拟翻译后备缓冲器（TLB）的操作效率的各种操作。 例如，披露了允许通过比较阴影的访客页表（GPT）条目与条目被缓存时拍摄的快照来确定影子页表（SPT）中的现有条目是否过时的操作。 公开了允许虚拟机监视器（VMM）通过软件或硬件中的步行树来访问影子页表树（SPTT）的其他操作。 还公开了其他操作，允许VMM使用散列表将GVA范围与映射它们的SPT相关联，从而显着降低了必须走每个SPTT以使所需GVA无效的成本。 最后，公开了操作，允许VMM通过在使全局GVAs无效时检查位图来确定全局GVA范围。

公开(公告)号：US08504703B2

公开(公告)日：2013-08-06

申请号：US10882891

申请日：2004-06-30

申请人： Rene Antonio Vega ,  Eric P. Traut ,  Mike Neil

发明人： Rene Antonio Vega ,  Eric P. Traut ,  Mike Neil

IPC分类号： G06F15/16 ,  G06F9/455

CPC分类号： G06F9/45558 ,  G06F9/45554 ,  G06F2009/45566

摘要： The present invention is a system for and method of providing instruction sequence compounding by (1) the virtual machine monitor's (VMM) looking ahead when an initial trap (exception) event occurs and recognizing traps within successive nearby instructions, combining and virtually executing the effects of multiple instructions while remaining inside the VMM's trap handler, and thereby minimizing the number of individual traps that would otherwise occur at each instruction and/or (2) the VMM's looking ahead when an initial context switch event occurs and recognizing context switches within successive nearby instructions, virtually combining the effects of multiple instructions and handing off this combined instruction to the host operating system, and thereby minimizing the number of individual context switches that would otherwise occur at each instruction. As a result, the number of processor cycles is reduced for exception handling and context switching in a virtual machine environment.

摘要翻译： 本发明是一种通过（1）当初始陷阱（异常）事件发生时向前看的虚拟机监视器（VMM）提供指令序列复合的系统和方法，并且在连续附近的指令内识别陷阱，组合并虚拟地执行该效果 的多个指令，同时保留在VMM的陷阱处理器内，从而最小化否则将在每个指令处发生的各个陷阱的数量和/或（2）当初始上下文切换事件发生时VMM的前瞻性并且在连续的附近识别上下文切换 指令，虚拟地组合多个指令的效果并将该组合指令移交给主机操作系统，从而最小化否则将在每个指令处发生的各个上下文切换的数量。 因此，虚拟机环境中的异常处理和上下文切换减少了处理器周期数。

公开(公告)号：US20110252421A1

公开(公告)日：2011-10-13

申请号：US13164634

申请日：2011-06-20

申请人： Rene Antonio Vega

发明人： Rene Antonio Vega

IPC分类号： G06F9/455

CPC分类号： G06F9/5027 ,  G06F9/45558 ,  G06F2009/4557 ,  G06F2209/5014

摘要： In an emulated computing environment, a method is provided for allocating resources of the host computer system among multiple virtual machines resident on the host computer system. On the basis of the proportional weight of each virtual machine, a proportional share of resources is allocated for each virtual machine. If, for a particular virtual machine, the calculated share is less than a reserved minimum share, the virtual machine is allocated its reserved minimum share as its share of computing device resources. An emulation program modulates the access of each virtual machine to the resources of the host computer system.

摘要翻译： 在仿真的计算环境中，提供了一种用于在驻留在主计算机系统上的多个虚拟机之间分配主计算机系统的资源的方法。 基于每个虚拟机的比例权重，为每个虚拟机分配资源的比例份额。 如果对于特定的虚拟机，计算出的共享小于保留的最小共享，则虚拟机被分配其保留的最小份额作为其计算设备资源的份额。 仿真程序调制每个虚拟机对主机系统的资源的访问。

公开(公告)号：US20110246986A1

公开(公告)日：2011-10-06

申请号：US12751991

申请日：2010-03-31

申请人： Andrew Nicholas ,  Rich Yampell ,  Jacob Oshins ,  Rene Antonio Vega

发明人： Andrew Nicholas ,  Rich Yampell ,  Jacob Oshins ,  Rene Antonio Vega

IPC分类号： G06F9/455

CPC分类号： G06F9/45545 ,  G06F9/45558 ,  G06F11/0712 ,  G06F11/0778 ,  G06F11/0787 ,  G06F2009/45579

摘要： Techniques for creating crash data in a virtualized environment are disclosed. In an embodiment of the present disclosure the techniques can be used when a guest operating system within a virtual machine may not have a sufficient mechanism for generating crash data.

摘要翻译： 公开了在虚拟化环境中创建崩溃数据的技术。 在本公开的实施例中，当虚拟机内的客户操作系统可能没有足够的用于生成崩溃数据的机制时，可以使用这些技术。

公开(公告)号：US07966169B2

公开(公告)日：2011-06-21

申请号：US11471337

申请日：2006-06-20

申请人： Rene Antonio Vega

发明人： Rene Antonio Vega

IPC分类号： G06F9/455

CPC分类号： G06F9/5027 ,  G06F9/45558 ,  G06F2009/4557 ,  G06F2209/5014

摘要： In an emulated computing environment, a method is provided for allocating resources of the host computer system among multiple virtual machines resident on the host computer system. On the basis of the proportional weight of each virtual machine, a proportional share of resources is allocated for each virtual machine. If, for a particular virtual machine, the calculated share is less than a reserved minimum share, the virtual machine is allocated its reserved minimum share as its share of processor resources. An emulation program modulates the access of each virtual machine to the resources of the host computer system.

摘要翻译： 在仿真的计算环境中，提供了一种用于在驻留在主计算机系统上的多个虚拟机之间分配主计算机系统的资源的方法。 基于每个虚拟机的比例权重，为每个虚拟机分配资源的比例份额。 如果对于特定虚拟机，计算出的共享小于预留的最小份额，则虚拟机将其保留的最小共享分配为其处理器资源的份额。 仿真程序调制每个虚拟机对主机系统的资源的访问。

公开(公告)号：US20100031254A1

公开(公告)日：2010-02-04

申请号：US12182971

申请日：2008-07-30

申请人： Yau Ning Chin ,  Rene Antonio Vega ,  John Te-Jui Sheu ,  Arun Kishan ,  Thomas Fahrig

发明人： Yau Ning Chin ,  Rene Antonio Vega ,  John Te-Jui Sheu ,  Arun Kishan ,  Thomas Fahrig

IPC分类号： G06F9/455

CPC分类号： G06F9/45558 ,  G06F9/45533 ,  G06F9/526 ,  G06F2009/4557

摘要： Various aspects are disclosed herein for attenuating spin waiting in a virtual machine environment comprising a plurality of virtual machines and virtual processors. Selected virtual processors can be given time slice extensions in order to prevent such virtual processors from becoming de-scheduled (and hence causing other virtual processors to have to spin wait). Selected virtual processors can also be expressly scheduled so that they can be given higher priority to resources, resulting in reduced spin waits for other virtual processors waiting on such selected virtual processors. Finally, various spin wait detection techniques can be incorporated into the time slice extension and express scheduling mechanisms, in order to identify potential and existing spin waiting scenarios.

摘要翻译： 本文公开了用于在包括多个虚拟机和虚拟处理器的虚拟机环境中衰减自旋等待的各个方面。 选定的虚拟处理器可以被给定时间片扩展，以防止这种虚拟处理器变得不被调度（并且因此导致其他虚拟处理器必须旋转等待）。 也可以明确地调度所选择的虚拟处理器，使得它们可以被赋予更高的资源优先级，从而减少等待这些所选择的虚拟处理器的其他虚拟处理器的旋转等待。 最后，各种旋转等待检测技术可以被并入到时间片扩展中并且表达调度机制，以便识别潜在的和现有的旋转等待场景。