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1. 发明授权

US10545744B2 Prediction mechanism for subroutine returns in binary translation sub-systems of computers 有权
公开(公告)号：US10545744B2
公开(公告)日：2020-01-28
申请号：US15806288
申请日：2017-11-07
申请人： VMware, Inc.
发明人： Ole Agesen
IPC分类号： G06F8/52 , G06F9/30
摘要： A sequence of input language (IL) instructions of a guest system is converted, for example by binary translation, into a corresponding sequence of output language (OL) instructions of a host system, which executes the OL instructions. In order to determine the return address after any IL call to a subroutine at a target entry address P, the corresponding OL return address is stored in an array at a location determined by an index calculated as a function of P. After completion of execution of the OL translation of the IL subroutine, execution is transferred to the address stored in the array at the location where the OL return address was previously stored. A confirm instruction block is included in each OL call site to determine whether the transfer was to the correct or incorrect call site, and a back-up routine is included to handle the cases of incorrect call sites.

2. 发明授权

US08719545B2 System and method for improving memory locality of virtual machines 有权
标题翻译：提高虚拟机内存局部性的系统和方法
公开(公告)号：US08719545B2
公开(公告)日：2014-05-06
申请号：US13670223
申请日：2012-11-06
申请人： VMware, Inc.
发明人： Vivek Pandey , Ole Agesen , Alexander Thomas Garthwaite , Carl A. Waldspurger , Rajesh Venkatasubramanian
IPC分类号： G06F13/00 , G06F13/28
CPC分类号： G06F9/5033 , G06F9/45558 , G06F9/4856 , G06F2009/4557
摘要： A system and related method of operation for migrating the memory of a virtual machine from one NUMA node to another. Once the VM is migrated to a new node, migration of memory pages is performed while giving priority to the most utilized pages, so that access to these pages becomes local as soon as possible. Various heuristics are described to enable different implementations for different situations or scenarios.
摘要翻译：将虚拟机的存储器从一个NUMA节点迁移到另一个NUMA节点的系统和相关操作方法。一旦将VM迁移到新节点，就会在优先使用最多的页面的同时执行内存页面的迁移，以便尽快访问这些页面。描述了各种启发式方法，以实现不同情况或场景的不同实现。

3. 发明授权

US08719513B2 System and method for maintaining memory page sharing in a virtual environment 有权
标题翻译：在虚拟环境中维护内存页共享的系统和方法
公开(公告)号：US08719513B2
公开(公告)日：2014-05-06
申请号：US13768637
申请日：2013-02-15
申请人： VMware, Inc.
发明人： Ole Agesen
IPC分类号： G06F9/455 , G06F7/04 , G06F12/08
CPC分类号： G06F12/08 , G06F9/45537 , G06F9/544 , G06F2209/542
摘要： In a virtualized system using memory page sharing, a method is provided for maintaining sharing when Guest code attempts to write to the shared memory. In one embodiment, virtualization logic uses a pattern matcher to recognize and intercept page zeroing code in the Guest OS. When the page zeroing code is about to run against a page that is already zeroed, i.e., contains all zeros, and is being shared, the memory writes in the page zeroing code have no effect. The virtualization logic skips over the writes, providing an appearance that the Guest OS page zeroing code has run to completion but without performing any of the writes that would have caused a loss of page sharing. The pattern matcher can be part of a binary translator that inspects code before it executes.
摘要翻译：在使用内存页面共享的虚拟化系统中，提供了一种方法，用于在访客代码尝试写入共享内存时保持共享。在一个实施例中，虚拟化逻辑使用模式匹配器来识别和拦截访客操作系统中的页面归零代码。当页面归零代码即将针对已经归零的页面运行时，即包含全部零，并且正在共享时，页面调零代码中的内存写入不起作用。虚拟化逻辑跳过写入，提供Guest OS页面调零代码已经运行到完成的外观，但不执行会导致页面共享丢失的任何写入。模式匹配器可以是在执行代码之前检查代码的二进制转换器的一部分。

4. 发明授权

US09965399B2 Large-page optimization in virtual memory paging systems 有权
公开(公告)号：US09965399B2
公开(公告)日：2018-05-08
申请号：US15483250
申请日：2017-04-10
申请人： VMware, Inc.
发明人： Ole Agesen
IPC分类号： G06F12/10 , G06F12/1009 , G06F12/1027
CPC分类号： G06F12/1009 , G06F12/1027 , G06F2212/152 , G06F2212/652 , G06F2212/68
摘要： A computer system that is programmed with virtual memory accesses to physical memory employs multi-bit counters associated with its page table entries. When a page walker visits a page table entry, the multi-bit counter associated with that page table entry is incremented by one. The computer operating system uses the counts in the multi-bit counters of different page table entries to determine where large pages can be deployed effectively. In a virtualized computer system having a nested paging system, multi-bit counters associated with both its primary page table entries and its nested page table entries are used. These multi-bit counters are incremented during nested page walks. Subsequently, the guest operating systems and the virtual machine monitors use the counts in the appropriate multi-bit counters to determine where large pages can be deployed effectively.

5. 发明授权

US09532103B2 Multi-user support for set top boxes and game consoles 有权
标题翻译：多用户支持机顶盒和游戏机
公开(公告)号：US09532103B2
公开(公告)日：2016-12-27
申请号：US14107985
申请日：2013-12-16
申请人： VMware, Inc.
发明人： Salim AbiEzzi , Ole Agesen
IPC分类号： H04N21/443 , G06F9/455 , H04N21/431 , H04N21/41 , H04N21/478 , H04N21/436 , A63F13/355 , A63F13/32
CPC分类号： H04N21/4437 , A63F13/32 , A63F13/355 , G06F9/45558 , G06F2009/45595 , H04N21/4104 , H04N21/4122 , H04N21/431 , H04N21/43615 , H04N21/4781
摘要： Systems and techniques are described for multi-user support on set top boxes and game consoles. A described technique includes executing a hypervisor that monitors a plurality of virtual machines that execute a set top box operating system or a game console operating system, providing a selection menu to a first display device, receiving a first selection of a first virtual machine, executing the first virtual machine, providing a first stream of content for a first user interface of the first virtual machine to the first display device, providing the selection menu to a second display device, receiving a second selection of a second virtual machine, executing the second virtual machine, and providing a second stream of content for a second user interface of the second virtual machine to the second display device while providing the first stream to the first display device.
摘要翻译：系统和技术被描述为机顶盒和游戏机上的多用户支持。所描述的技术包括执行监视执行机顶盒操作系统或游戏控制台操作系统的多个虚拟机的管理程序，向第一显示设备提供选择菜单，接收第一虚拟机的第一选择，执行所述第一虚拟机向第一显示设备提供用于第一虚拟机的第一用户界面的第一内容流，将选择菜单提供给第二显示设备，接收第二虚拟机的第二选择，执行第二虚拟机虚拟机，并且向第二显示设备提供第二虚拟机的第二用户界面的第二内容流，同时向第一显示设备提供第一流。

6. 发明授权

US09785506B2 Reducing likelihood of concurrency error in virtualized computing environment 有权
公开(公告)号：US09785506B2
公开(公告)日：2017-10-10
申请号：US14050322
申请日：2013-10-09
申请人： VMware, Inc.
发明人： Ole Agesen , Michael Cohen , Jeffrey W. Sheldon
IPC分类号： G06F9/455 , G06F11/14 , G06F11/00
CPC分类号： G06F11/1402 , G06F9/45516 , G06F11/004 , G06F2201/815 , G06F2201/82
摘要： A system and method for reducing the likelihood of concurrency errors by identifying vulnerable segments of computer code and stalling other virtual machine threads of execution. According to one embodiment of the present invention, the vulnerable segment is identified at runtime, for example in a dynamic translator. According to another embodiment of the present invention, the vulnerable segment is identified ahead of time, for example in a static translator. According to yet another embodiment of the present invention, the vulnerable segment is identified in the binary translator of a virtual machine monitor.

7. 发明申请

US20150172760A1 Multi-User Support for Set Top Boxes and Game Consoles 有权
标题翻译：多用户支持机顶盒和游戏机
公开(公告)号：US20150172760A1
公开(公告)日：2015-06-18
申请号：US14107985
申请日：2013-12-16
申请人： VMware, Inc.
发明人： Salim AbiEzzi , Ole Agesen
IPC分类号： H04N21/443 , G06F3/0482 , H04N7/10 , H04N21/41 , H04N21/478 , H04N21/436 , G06F9/455 , H04N21/431
CPC分类号： H04N21/4437 , A63F13/32 , A63F13/355 , G06F9/45558 , G06F2009/45595 , H04N21/4104 , H04N21/4122 , H04N21/431 , H04N21/43615 , H04N21/4781
摘要： Systems and techniques are described for multi-user support on set top boxes and game consoles. A described technique includes executing a hypervisor that monitors a plurality of virtual machines that execute a set top box operating system or a game console operating system, providing a selection menu to a first display device, receiving a first selection of a first virtual machine, executing the first virtual machine, providing a first stream of content for a first user interface of the first virtual machine to the first display device, providing the selection menu to a second display device, receiving a second selection of a second virtual machine, executing the second virtual machine, and providing a second stream of content for a second user interface of the second virtual machine to the second display device while providing the first stream to the first display device.
摘要翻译：系统和技术被描述为机顶盒和游戏机上的多用户支持。所描述的技术包括执行监视执行机顶盒操作系统或游戏控制台操作系统的多个虚拟机的管理程序，向第一显示设备提供选择菜单，接收第一虚拟机的第一选择，执行所述第一虚拟机向第一显示设备提供用于第一虚拟机的第一用户界面的第一内容流，将选择菜单提供给第二显示设备，接收第二虚拟机的第二选择，执行第二虚拟机虚拟机，并且向第二显示设备提供第二虚拟机的第二用户界面的第二内容流，同时向第一显示设备提供第一流。

8. 发明授权

US08875162B2 Efficient virtualization of input/output completions for a virtual device 有权
标题翻译：虚拟设备的输入/输出完成的高效虚拟化
公开(公告)号：US08875162B2
公开(公告)日：2014-10-28
申请号：US13963442
申请日：2013-08-09
申请人： VMware, Inc.
发明人： Ole Agesen , Boris Weissman , Keith Adams , Jennifer-Ann M. Anderson , Maxime Austruy
IPC分类号： G06F9/44 , G06F9/455 , G06F9/48 , G06F9/46
CPC分类号： G06F9/45508 , G06F9/45558 , G06F9/4825 , G06F2009/45579
摘要： Completion interrupts corresponding to I/O requests issued by a virtual machine guest, which runs on a host platform, are virtualized in such a way that I/O completion interrupts to the requesting guest are delivered no faster than it can stably handle them, but, when possible, faster than the nominal speed of a virtual device to which a virtual machine addresses the I/O request. In general, completion events received from the host platform in response to guest I/O requests are examined with respect to time. If enough time has passed that the virtual device would normally have completed the I/O request, then the completion interrupt is delivered to the guest. If the nominal time has not elapsed, however, the invention enqueues and time-stamps the event and delivers it at the earliest of a) the normal maturity time, or b) at a safepoint.
摘要翻译：在主机平台上运行的虚拟机访客发出的I / O请求相应的完成中断被虚拟化，使得对请求的客户端的I / O完成中断的传送速度不会比可以稳定地处理它们的速度更快，而是在可能的情况下，虚拟机对于I / O请求所对应的虚拟设备的标称速度更快。一般来说，根据客户端I / O请求从主机平台接收到的完成事件将相对于时间进行检查。如果虚拟设备通常已经完成了I / O请求的足够的时间，则完成中断将传递给客户端。然而，如果没有经过标称时间，本发明会在a）正常到期时间的最早时间排队和时间戳，并且b）在一个安全点。

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