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    Method and system for caching address translations from multiple address spaces in virtual machines
    4.
    发明申请
    Method and system for caching address translations from multiple address spaces in virtual machines 有权
    用于从虚拟机中的多个地址空间缓存地址转换的方法和系统

    公开(公告)号：US20060259734A1

    公开(公告)日：2006-11-16

    申请号：US11128982

    申请日：2005-05-13

    申请人： John Sheu ,  David Bailey ,  Eric Traut ,  Rene Vega

    发明人： John Sheu ,  David Bailey ,  Eric Traut ,  Rene Vega

    IPC分类号： G06F12/00

    CPC分类号： G06F12/1036 ,  G06F2212/151 ,  G06F2212/683

    摘要： A method of virtualizing memory through shadow page tables that cache translations from multiple guest address spaces in a virtual machine includes a software version of a hardware tagged translation look-aside buffer. Edits to guest page tables are detected by intercepting the creation of guest-writable mappings to guest page tables with translations cached in shadow page tables. The affected cached translations are marked as stale and purged upon an address space switch or an indiscriminate flush of translations by the guest. Thereby, non-stale translations remain cached but stale translations are discarded. The method includes tracking the guest-writable mappings to guest page tables, deferring discovery of such mappings to a guest page table for the first time until a purge of all cached translations when the number of untracked guest page tables exceeds a threshold, and sharing shadow page tables between shadow address spaces and between virtual processors.

    摘要翻译： 通过影像页表虚拟化存储器的方法，其缓存来自虚拟机中的多个访客地址空间的转换，包括硬件标记的翻译后备缓冲器的软件版本。 通过拦截向客户页面表创建客户机可写映射，并通过缓存在阴影页表中的翻译来检测访客页面表的编辑。 受影响的缓存翻译被标记为陈旧，并被清除在地址空间开关或客人不加区别地翻译翻译。 因此，非陈旧的翻译仍保持高速缓存，但是陈旧的翻译将被丢弃。 该方法包括跟踪访客页面表的访客可写映射，将此类映射的发现推迟到访客页面表，直到当未跟踪的访客页面表的数量超过阈值时清除所有缓存的翻译，并共享阴影 阴影地址空间和虚拟处理器之间的页表。

    Enhanced shadow page table algorithms
    5.
    发明申请
    Enhanced shadow page table algorithms 有权
    增强的影子页表算法

    公开(公告)号：US20060259732A1

    公开(公告)日：2006-11-16

    申请号：US11128665

    申请日：2005-05-12

    申请人： Eric Traut ,  Matthew Hendel ,  Rene Vega

    发明人： Eric Traut ,  Matthew Hendel ,  Rene Vega

    IPC分类号： G06F12/00 ,  G06F13/00

    CPC分类号： G06F12/1036 ,  G06F12/1009 ,  G06F12/109

    摘要： Enhanced shadow page table algorithms are presented for enhancing typical page table algorithms. In a virtual machine environment, where an operating system may be running within a partition, the operating system maintains it's own guest page tables. These page tables are not the real page tables that map to the real physical memory. Instead, the memory is mapped by shadow page tables maintained by a virtualing program, such as a hypervisor, that virtualizes the partition containing the operating system. Enhanced shadow page table algorithms provide efficient ways to harmonize the shadow page tables and the guest page tables. Specifically, by using tagged translation lookaside buffers, batched shadow page table population, lazy flags, and cross-processor shoot downs, the algorithms make sure that changes in the guest pages tables are reflected in the shadow page tables.

    摘要翻译： 提出了增强的影子页表算法，用于增强典型的页表算法。 在虚拟机环境中，操作系统可能在分区内运行，操作系统维护它自己的访客页表。 这些页表不是映射到真实物理内存的真实页表。 相反，内存由虚拟化程序（例如虚拟机管理程序）维护的影子页表映射，虚拟化包含操作系统的分区。 增强的影子页表算法提供了有效的方式来协调阴影页表和访客页表。 具体来说，通过使用标记的翻译后备缓冲区，批量阴影页表群，延迟标记和跨处理器拍摄，算法确保访客页表中的更改反映在影子页表中。

    Systems and methods for hypervisor discovery and utilization
    6.
    发明申请
    Systems and methods for hypervisor discovery and utilization 有权
    管理程序发现和利用的系统和方法

    公开(公告)号：US20060248528A1

    公开(公告)日：2006-11-02

    申请号：US11119200

    申请日：2005-04-29

    申请人： Adrian Oney ,  Andrew Thornton ,  Eric Traut ,  Nathan Lewis

    发明人： Adrian Oney ,  Andrew Thornton ,  Eric Traut ,  Nathan Lewis

    IPC分类号： G06F9/455

    CPC分类号： G06F9/45533

    摘要： Systems and methods are provided, whereby partitions may become enlightened and discover the presence of a hypervisor. Several techniques of hypervisor discovery are discussed, such as detecting the presence of virtual processor registers (e.g. model specific registers or special-purpose registers) or the presence of virtual hardware devices. Upon discovery, information (code and/or data) may be injected in a partition by the hypervisor, whereby such injection allows the partition to call the hypervisor. Moreover, the hypervisor may present a versioning mechanism that allows the partition to match up the version of the hypervisor to its virtual devices. Next, once code and/or data is injected, calling conventions are established that allow the partition and the hypervisor to communicate, so that the hypervisor may perform some operations on behalf of the partition. Four exemplary calling conventions are considered: restartable instructions, a looping mechanism, shared memory transport, and synchronous or asynchronous processed packets. Last, cancellation mechanisms are considered, whereby partition requests may be cancelled.

    摘要翻译： 提供了系统和方法，由此分区可能变得开明并发现管理程序的存在。 讨论了管理程序发现的几种技术，例如检测虚拟处理器寄存器（例如模型特定寄存器或专用寄存器）的存在或虚拟硬件设备的存在。 一旦发现，信息（代码和/或数据）可以由管理程序注入到分区中，由此这种注入允许分区调用管理程序。 此外，管理程序可以呈现允许分区将虚拟机管理程序的版本与其虚拟设备相匹配的版本控制机制。 接下来，一旦注入了代码和/或数据，就建立了允许分区和管理程序进行通信的调用约定，以便管理程序可以代表分区执行一些操作。 考虑四个示例性的呼叫约定：可重新启动的指令，循环机制，共享存储器传输和同步或异步处理的分组。 最后，考虑取消机制，从而可能会取消分区请求。

    METHOD FOR FORKING OR MIGRATING A VIRTUAL MACHINE
    7.
    发明申请
    METHOD FOR FORKING OR MIGRATING A VIRTUAL MACHINE 有权
    制造或移动虚拟机的方法

    公开(公告)号：US20080098154A1

    公开(公告)日：2008-04-24

    申请号：US11963067

    申请日：2007-12-21

    申请人： Eric Traut ,  Rene Vega

    发明人： Eric Traut ,  Rene Vega

    IPC分类号： G06F9/455 ,  G06F12/00

    CPC分类号： G06F9/4856 ,  G06F9/45537

    摘要： A method is provided for increasing the efficiency of virtual machine processing. A parent virtual machine is provided on a host computer. The parent virtual machine is temporarily or permanently suspended. A child virtual machine is created at a new location by forking the parent virtual machine. The child virtual machine may not initially include all the stored data that is associated with the parent virtual machine.

    摘要翻译： 提供了一种提高虚拟机处理效率的方法。 父虚拟机在主机上提供。 父虚拟机暂时或永久挂起。 通过分叉父虚拟机在新位置创建子虚拟机。 子虚拟机可能最初不包括与父虚拟机相关联的所有存储的数据。

    Method and system for a guest physical address virtualization in a virtual machine environment
    8.
    发明授权
    Method and system for a guest physical address virtualization in a virtual machine environment 有权
    虚拟机环境中客户物理地址虚拟化的方法和系统

    公开(公告)号：US07334076B2

    公开(公告)日：2008-02-19

    申请号：US11075219

    申请日：2005-03-08

    申请人： Matthew D. Hendel ,  Eric Traut

    发明人： Matthew D. Hendel ,  Eric Traut

    IPC分类号： G06F12/00

    CPC分类号： G06F12/1036 ,  G06F9/45558 ,  G06F9/544 ,  G06F12/0261 ,  G06F12/109 ,  G06F2009/45583 ,  G06F2212/656

    摘要： A method of sharing pages between virtual machines in a multiple virtual machine environment includes initially allocating a temporary guest physical address range of a first virtual machine for sharing pages with a second virtual machine. The temporary range is within a guest physical address space of the first virtual machine. An access request, such as with a DMA request, from a second virtual machine for pages available to the first virtual machine is received. A reference count of pending accesses to the pages is incremented to indicate a pending access and the ages are mapped into the temporary guest physical address range. The pages are accessed and the reference count is decremented. The mapping in the temporary guest physical address range is then removed if the reference count is zero.

    摘要翻译： 在多虚拟机环境中的虚拟机之间共享页面的方法包括：首先分配用于与第二虚拟机共享页面的第一虚拟机的临时访客物理地址范围。 临时范围在第一个虚拟机的客户物理地址空间内。 接收来自第二虚拟机的访问请求，例如具有DMA请求，用于可用于第一虚拟机的页面。 增加对页面的未决访问的引用计数，以指示挂起的访问，并将年龄映射到临时访客物理地址范围。 页面被访问，引用计数递减。 如果引用计数为零，则临时访客物理地址范围中的映射将被删除。

    Partition bus
    9.
    发明申请
    Partition bus 有权
    分区巴士

    公开(公告)号：US20060259731A1

    公开(公告)日：2006-11-16

    申请号：US11128647

    申请日：2005-05-12

    申请人： Jacob Oshins ,  Peter Johnston ,  Eric Traut ,  Nathan Lewis ,  Jeffrey Kinsey

    发明人： Jacob Oshins ,  Peter Johnston ,  Eric Traut ,  Nathan Lewis ,  Jeffrey Kinsey

    IPC分类号： G06F12/00

    CPC分类号： G06F9/544 ,  G06F9/45537

    摘要： A method and system are provided for integrating partitions in a virtual machine environment. Specifically, a partition bus is provided, where the partition bus operatively connects partitions in such a way that it functions as a data transport mechanism allowing for data transfer and device sharing between partitions. The partition bus relies on virtualizing software in order to establish itself and to establish channels of communication between partitions and to inject interrupts to partitions where it is appropriate to do so. Furthermore, the partition bus employs such mechanisms ring buffers, transfer pages, and memory map changes to transfer information (requests and data). Furthermore, it uses policy agents to decide when information should be transferred or when devices should be shared among partitions. Lastly, it employs various mechanisms to ensure smooth integration between partitions, which includes remote services that have proxy devices and device versioning functionalities.

    摘要翻译： 提供了一种在虚拟机环境中集成分区的方法和系统。 具体地说，提供了分区总线，其中分区总线以这样的方式可操作地连接分区，使得其用作数据传输机制，允许分区之间的数据传输和设备共享。 分区总线依赖于虚拟化软件，以便建立自身并建立分区之间的通信通道，并将中断注入适当的分区。 此外，分区总线使用环形缓冲器，传送页面和存储器映射变化来传送信息（请求和数据）。 此外，它使用策略代理来决定何时应该传输信息，或者在分区之间共享设备。 最后，它采用各种机制来确保分区之间的平滑集成，其中包括具有代理设备和设备版本控制功能的远程服务。

    Mechanism to store information describing a virtual machine in a virtual disk image
    10.
    发明申请
    Mechanism to store information describing a virtual machine in a virtual disk image 有权

    公开(公告)号：US20060218544A1

    公开(公告)日：2006-09-28

    申请号：US11089951

    申请日：2005-03-25

    申请人： Parag Chakraborty ,  Eric Traut

    发明人： Parag Chakraborty ,  Eric Traut

    IPC分类号： G06F9/44

    CPC分类号： G06F8/63 ,  G06F9/44505 ,  G06F9/45558 ,  G06F2009/45562

    摘要： A mechanism is provided for making information about the virtual disk image file and/or its associated virtual image configuration file more readily available to a user. The virtual disk image file format is expanded to include fields in which information about the data in the file can be stored. Extensible information on file content, compatible HW configurations, compatible host OSes, timeout status, DRM status, patch state, and network topology, tag data for indexing, configuration files, saved state files, operation history data, and the like is stored in a location within a virtual disk image file that can be read without executing the virtual machine. This information can then be used to search the contents of the virtual disk image, to enforce usage policies, to provide extensibility for vendors, and the like.