专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明授权

US08607013B2 Providing VMM access to guest virtual memory 有权
标题翻译：提供访问虚拟内存的VMM访问
公开(公告)号：US08607013B2
公开(公告)日：2013-12-10
申请号：US12261147
申请日：2008-10-30
申请人： Xiaoxin Chen , Carl A. Waldspurger , Pratap Subrahmanyam
发明人： Xiaoxin Chen , Carl A. Waldspurger , Pratap Subrahmanyam
IPC分类号： G06F12/00 , G06F13/00 , G06F13/28
CPC分类号： G06F9/461 , G06F9/4486 , G06F9/45533 , G06F9/45558 , G06F9/4881 , G06F11/1451 , G06F11/1484 , G06F2009/45562 , G06F2009/45583 , G06F2201/815 , G06F2201/84
摘要： A virtual-machine-based system provides a mechanism for a virtual machine monitor (VMM) to process a hypercall received from an application running in the virtual machine (VM). A hypercall interface causes the virtual memory pages, needed by the VMM to process the hypercall, to be available to the VMM. In one embodiment, when virtual memory pages needed by the VMM to process the hypercall are not available to the VMM, the application is caused to access the needed pages, in response to which the required virtual memory becomes available to the VMM.
摘要翻译：基于虚拟机的系统为虚拟机监视器（VMM）提供了一种机制，用于处理从虚拟机（VM）中运行的应用程序接收到的超级呼叫。一个超级呼叫界面使VMM所需的虚拟内存页面可以处理该超级调用，以供VMM使用。在一个实施例中，当VMM处理该超级呼叫所需的虚拟存储器页面对VMM不可用时，使应用程序访问所需的页面，响应于所需的虚拟存储器对VMM可用。

42. 发明授权

US08495631B2 Undefeatable transformation for virtual machine I/O operations 有权
标题翻译：虚拟机I / O操作的不可逆转换
公开(公告)号：US08495631B2
公开(公告)日：2013-07-23
申请号：US13289580
申请日：2011-11-04
申请人： Carl A. Waldspurger , Edouard Bugnion
发明人： Carl A. Waldspurger , Edouard Bugnion
IPC分类号： G06F9/455 , G06F17/00 , G06F11/00
CPC分类号： G06F9/545 , G06F9/45558 , G06F2009/45579
摘要： I/O operations between a virtual machine (VM) and a device external to the VM are monitored by a virtual machine monitor (VMM). Data passing between the VM and the external device is transformed by the VMM, in some cases only when a predetermined filtering or triggering condition is met. Because the VMM, and thus the transformation operation, is transparent to the VM, the transformation cannot be prevented or undone or even affected by any action by a user of the VM. Examples of the non-defeatable transformation of I/O data include generating display overlays such as banners, masking out portions of a display, encryption, compression and network shaping such as bandwidth limiting.
摘要翻译：虚拟机（VM）与VM外部的设备之间的I / O操作由虚拟机监视器（VMM）监视。虚拟机和外部设备之间的数据通过VMM进行转换，在某些情况下，只有当满足预定的过滤或触发条件时才会进行。因为VMM，因此转换操作对于VM是透明的，所以转换不能被VM的用户的任何动作阻止或撤消甚至影响。 I / O数据的不可逆转换的示例包括生成诸如横幅的显示覆盖，屏蔽显示的部分，加密，压缩和诸如带宽限制的网络整形。

43. 发明授权

US08417812B1 Methods and systems for detecting anomalies during IO accesses 有权
标题翻译：在IO访问期间检测异常的方法和系统
公开(公告)号：US08417812B1
公开(公告)日：2013-04-09
申请号：US12834324
申请日：2010-07-12
申请人： Ajay Gulati , Irfan Ahmad , Jyothir Ramanan , Carl A. Waldspurger
发明人： Ajay Gulati , Irfan Ahmad , Jyothir Ramanan , Carl A. Waldspurger
IPC分类号： G06F15/173
CPC分类号： H04L43/0876 , G06F3/06 , G06F11/00 , G06F11/0727 , G06F11/0757 , G06F11/3419 , G06F11/3485 , G06F2201/81 , G06F2201/815 , H04L43/0852 , H04L47/00 , H04L47/12 , H04L47/56 , H04L47/6275 , H04L67/1097 , H04L69/40
摘要： An anomaly in a shared input/ouput (IO) resource that is accessed by a plurality hosts or clients is detected when a host that is not bound by any QoS policy presents large workloads to a shared IO resource that is also accessed by hosts or clients that are governed by QoS policy. The anomaly detection triggers a response from the hosts or clients as a way to protect against the effect of the anomaly. The response is an increase in window sizes. The window sizes of the hosts or clients may be increased to the maximum window size or in proportion to their QoS shares.
摘要翻译：当未被任何QoS策略约束的主机向主机或客户端访问的共享IO资源提供大量工作负载时，会检测到由多个主机或客户机访问的共享输入/输出（IO）资源中的异常情况由QoS策略管理。异常检测触发主机或客户端的响应，作为防止异常的影响的一种方式。响应是窗口大小的增加。主机或客户端的窗口大小可以增加到最大窗口大小或者与它们的QoS份额成比例。

44. 发明授权

US08261265B2 Transparent VMM-assisted user-mode execution control transfer 有权
标题翻译：透明VMM辅助用户模式执行控制传输
公开(公告)号：US08261265B2
公开(公告)日：2012-09-04
申请号：US12261623
申请日：2008-10-30
申请人： Xiaoxin Chen , Carl A. Waldspurger , Pratap Subrahmanyam , Tal Garfinkel , Daniel R. K. Ports
发明人： Xiaoxin Chen , Carl A. Waldspurger , Pratap Subrahmanyam , Tal Garfinkel , Daniel R. K. Ports
IPC分类号： G06F9/455
CPC分类号： G06F9/461 , G06F9/4486 , G06F9/45533 , G06F9/45558 , G06F9/4881 , G06F11/1451 , G06F11/1484 , G06F2009/45562 , G06F2009/45583 , G06F2201/815 , G06F2201/84
摘要： A virtual-machine-based system provides a control-transfer mechanism to invoke a user-mode application handler from existing virtual hardware directly, without going through an operating system kernel running in the virtual machine. A virtual machine monitor calls directly to the guest user-mode handler and the handler transfers control back to the virtual machine monitor, without involving the guest operating system.
摘要翻译：基于虚拟机的系统提供了一种控制传递机制，可以直接从现有的虚拟硬件调用用户模式应用程序处理程序，而无需通过在虚拟机中运行的操作系统内核。虚拟机监视器直接调用访客用户模式处理程序，处理程序将控制器传送回虚拟机监视器，而不涉及客户机操作系统。

45. 发明授权

US08166253B2 Memory management system in a computer system with shared memory mappings 有权
标题翻译：具有共享内存映射的计算机系统中的内存管理系统
公开(公告)号：US08166253B2
公开(公告)日：2012-04-24
申请号：US13209261
申请日：2011-08-12
申请人： Anil Rao , Carl A. Waldspurger , Xiaoxin Chen
发明人： Anil Rao , Carl A. Waldspurger , Xiaoxin Chen
IPC分类号： G06F12/00 , G06F13/00 , G06F13/28
CPC分类号： G06F12/121 , G06F12/109 , G06F2212/656
摘要： A memory management sub-system includes code executable by a processor fir performing selecting a plurality of contexts, and selecting a sample of the separately allocable portions of an address space for each of the contexts. For each of the selected allocable portions, a corresponding portion of the host memory to which the selected allocable portion is mapped is determined, and a count corresponding to a number of separately allocable portions of any context that are commonly mapped to the corresponding portion of the host memory. For each context, a metric is computed that is a function of the counts for that context. Host memory is allocated among the contexts at least in part based on their respective metrics.
摘要翻译：存储器管理子系统包括可由执行选择多个上下文的处理器执行的代码，以及为每个上下文选择地址空间的可单独分配的部分的样本。对于每个所选择的可分配部分，确定所选择的可分配部分映射到的主机存储器的相应部分，并且对应于通常映射到所述可分配部分的相应部分的任何上下文的可分配部分的数量的计数主机内存对于每个上下文，计算度量是该上下文计数的函数。主机内存至少部分地基于它们各自的度量被分配在上下文之中。

46. 发明授权

US07912951B2 Quality of service management 有权
标题翻译：服务质量管理
公开(公告)号：US07912951B2
公开(公告)日：2011-03-22
申请号：US12260054
申请日：2008-10-28
申请人： Ajay Gulati , Irfan Ahmad , Carl A. Waldspurger
发明人： Ajay Gulati , Irfan Ahmad , Carl A. Waldspurger
IPC分类号： G06F15/173 , G06F13/28 , G06F9/46
CPC分类号： G06F9/52
摘要： A method and system for providing quality of service to a plurality of hosts accessing a common resource is described. According to one embodiment, a plurality of IO requests is received from clients executing as software entities on one of the hosts. An IO request queue for each client is separately managed, and an issue queue is populated based on contents of the IO request queues. When a host issue queue is not full, a new IO request is entered into the host issue queue and is issued to the common resource. A current average latency observed at the host is calculated, and an adjusted window size is calculated at least in part based on the current average latency. The window size of the issue queue is adjusted according to the calculated window size.
摘要翻译：描述了一种用于向接入公共资源的多个主机提供服务质量的方法和系统。根据一个实施例，从作为主机之一上的软件实体执行的客户端接收到多个IO请求。每个客户端的IO请求队列被单独管理，并且基于IO请求队列的内容填充问题队列。当主机发出队列未满时，将向主机发出队列中输入新的IO请求，并发布给公共资源。计算在主机处观察到的当前平均延迟，并且基于当前平均延迟至少部分地计算经调整的窗口大小。根据计算的窗口大小调整问题队列的窗口大小。

47. 发明申请

US20100299667A1 SHORTCUT INPUT/OUTPUT IN VIRTUAL MACHINE SYSTEMS 有权
标题翻译：虚拟机系统中的快速输入/输出
公开(公告)号：US20100299667A1
公开(公告)日：2010-11-25
申请号：US12783205
申请日：2010-05-19
申请人： Irfan Ahmad , Carl A. Waldspurger
发明人： Irfan Ahmad , Carl A. Waldspurger
IPC分类号： G06F12/08 , G06F9/455
CPC分类号： G06F12/1018 , G06F12/1036 , G06F12/109 , G06F2212/152 , G06F2212/656
摘要： Read requests to a commonly accessed storage volume are conditionally issued, depending on whether or not a requested data block is already stored in memory from a prior access or to be stored in memory upon completion of a pending request. A data structure is maintained in memory to track physical memory pages and to indicate for each physical memory page the corresponding location in the storage volume from which the contents of the physical memory were read and the number of virtual memory pages that are mapped thereto.
摘要翻译：根据所请求的数据块是否已经从先前的访问中存储在存储器中，或者在完成未决请求时被存储在存储器中，有条件地发出对常用访问存储卷的读取请求。在存储器中维护数据结构以跟踪物理存储器页面，并且为每个物理存储器页面指示从其读取物理存储器的内容的存储卷中的对应位置和映射到其的虚拟存储器页面的数量。

48. 发明申请

US20090113111A1 SECURE IDENTIFICATION OF EXECUTION CONTEXTS 审中-公开
标题翻译：安全执行执行标识
公开(公告)号：US20090113111A1
公开(公告)日：2009-04-30
申请号：US12261159
申请日：2008-10-30
申请人： Xiaoxin Chen , Carl A. Waldspurger , Pratap Subrahmanyam
发明人： Xiaoxin Chen , Carl A. Waldspurger , Pratap Subrahmanyam
IPC分类号： G06F12/08
CPC分类号： G06F9/461 , G06F9/4486 , G06F9/45533 , G06F9/45558 , G06F9/4881 , G06F11/1451 , G06F11/1484 , G06F2009/45562 , G06F2009/45583 , G06F2201/815 , G06F2201/84
摘要： A virtual-machine-based system that identifies an application or process in a virtual machine in order to locate resources associated with the identified application. Access to the located resources is then controlled based on a context of the identified application. Those applications without the necessary context will have a different view of the resource.
摘要翻译：基于虚拟机的系统，其识别虚拟机中的应用或进程，以便定位与所识别的应用相关联的资源。然后基于所识别的应用的上下文来控制对所定位的资源的访问。那些没有必要上下文的应用程序将具有不同的资源视图。

49. 发明授权

US06789156B1 Content-based, transparent sharing of memory units 有权
标题翻译：基于内容，透明共享内存单元
公开(公告)号：US06789156B1
公开(公告)日：2004-09-07
申请号：US09915045
申请日：2001-07-25
申请人： Carl A. Waldspurger
发明人： Carl A. Waldspurger
IPC分类号： G06F1202
CPC分类号： G06F12/1018 , G06F12/1036 , G06F12/109 , G06F2212/151
摘要： A computer system has one or more software context that share use of a memory that is divided into units such as pages. In the preferred embodiment of the invention, the context are, or include, virtual machines running on a common hardware platform. The context, as opposed to merely the addresses or page numbers, of virtual memory pages that accessible to one or more contexts are examined. If two or more context pages are identical, then their memory mappings are changed to point to a single, shared copy of the page in the hardware memory, thereby freeing the memory space taken up by the redundant copies. The shared copy is ten preferable marked copy-on-write. Sharing is preferably dynamic, whereby the presence of redundant copies of pages is preferably determined by hashing page contents and performing full content comparisons only when two or more pages hash to the same key.
摘要翻译：计算机系统具有共享使用被划分为诸如页面的单元的存储器的一个或多个软件上下文。在本发明的优选实施例中，上下文是或包括在公共硬件平台上运行的虚拟机。检查一个或多个上下文可访问的虚拟存储器页面的上下文（而不仅仅是地址或页码）。如果两个或多个上下文页面相同，则将其内存映射更改为指向硬件存储器中页面的单个共享副本，从而释放由冗余副本占用的内存空间。共享副本是十个优选的标记的写时复制。共享优选是动态的，由此，仅当两个或更多个页面散列到相同的密钥时，优选地通过散列页面内容并执行全部内容比较来确定页面的冗余副本。

50. 发明授权

US06725289B1 Transparent address remapping for high-speed I/O 有权
标题翻译：透明地址重映射用于高速I / O
公开(公告)号：US06725289B1
公开(公告)日：2004-04-20
申请号：US10124783
申请日：2002-04-17
申请人： Carl A. Waldspurger , Michael Nelson , Kinshuk Govil
发明人： Carl A. Waldspurger , Michael Nelson , Kinshuk Govil
IPC分类号： G06F1200
CPC分类号： G06F12/1081
摘要： A subsystem that is able to address a second memory region initiates I/O requests directed to a device that is able to address a first memory region that is different from the second memory region. Requests for memory are mapped at least once, for example from virtual to physical page numbers. The I/O requests are conditionally remapped to pages in the first region as a function of how often they are involved in the I/O operations and would normally otherwise need to be copied. Remapping may also be made conditional on a function of availability of memory in the first region. In a preferred embodiment of the invention, the I/O requests are initiated by a subsystem within a virtual machine, which runs via an intermediate software layer such as a virtual machine monitor on an underlying hardware and software platform. A typical application of the invention is DMA.
摘要翻译：能够寻址第二存储器区域的子系统启动针对能够寻址不同于第二存储器区域的第一存储器区域的设备的I / O请求。至少要对存储器的请求进行映射，例如从虚拟到实际的页码。 I / O请求有条件地重新映射到第一个区域中的页面，作为它们参与I / O操作的频率的函数，通常还需要复制。还可以根据第一区域中的存储器的可用性的功能来进行重新映射。在本发明的优选实施例中，I / O请求由虚拟机内的子系统发起，虚拟机通过诸如虚拟机监视器的中间软件层在底层硬件和软件平台上运行。本发明的典型应用是DMA。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式