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    • 7. 发明申请
    • Thread migration control based on prediction of migration overhead
    • 基于迁移开销预测的线程迁移控制
    • US20080244226A1
    • 2008-10-02
    • US11731276
    • 2007-03-29
    • Tong LiDaniel BaumbergerScott Hahn
    • Tong LiDaniel BaumbergerScott Hahn
    • G06F15/00
    • G06F9/4856
    • A processing system features a first processing core to operate in a first node, a second processing core to operate in a second node, and random access memory (RAM) responsive to the first and second processing cores. The processing system also features control logic to perform operations such as (a) automatically updating a resident set size (RSS) counter to correspond to the RSS for the thread on the first node in response to allocation of a page frame for a thread in the first node, and (b) using the RSS counter to predict migration overhead when determining whether the thread should be migrated from the first processing core to the second processing core. Other embodiments are described and claimed.
    • 处理系统具有在第一节点中操作的第一处理核心,在第二节点中操作的第二处理核和响应于第一和第二处理核的随机存取存储器(RAM)。 处理系统还具有控制逻辑,以执行操作,例如(a)响应于针对第一节点上的线程的页面帧的分配,自动更新驻留集大小(RSS)计数器以对应于第一节点上的线程的RSS 第一节点,以及(b)当确定线程是否应该从第一处理核心迁移到第二处理核心时,使用RSS计数器来预测迁移开销。 描述和要求保护其他实施例。
    • 8. 发明申请
    • Method, apparatus and system for improved packet demultiplexing on a host virtual machine
    • 用于在主机虚拟机上改进分组多路分解的方法,装置和系统
    • US20050207407A1
    • 2005-09-22
    • US10802198
    • 2004-03-16
    • Daniel Baumberger
    • Daniel Baumberger
    • H04L12/56
    • H04L49/901H04L49/90H04L49/9047
    • A method, apparatus and system enable improved demultiplexing in a virtual machine (“VM”) environment. Typically, guest physical addresses of the VMs are mapped to the physical page addresses of the host, thus requiring incoming packets to be copied from the host's direct memory access (“DMA”) buffer to the destination VM's buffer. Embodiments of the present invention unmap the guest physical address of the VMs from the physical page address of the host, thus freeing up a “pool” of pages to be mapped to the destination VM as necessary. Thus, by disassociating the guest physical address from the physical page address, embodiments of the invention eliminate the need for copying incoming packets from one buffer to another.
    • 一种方法,装置和系统能够改善虚拟机(“VM”)环境中的解复用。 通常,VM的访客物理地址映射到主机的物理页面地址,因此需要将传入数据包从主机的直接存储器访问(“DMA”)缓冲区复制到目标VM的缓冲区。 本发明的实施例从主机的物理页面地址取消映射VM的访客物理地址,从而根据需要释放要映射到目的地VM的页面的“池”。 因此,通过将访客物理地址与物理页面地址分离,本发明的实施例消除了将来自一个缓冲区的输入分组复制到另一个缓冲器的需要。
    • 9. 发明申请
    • Protecting an operating system kernel from third party drivers
    • 保护操作系统内核免受第三方驱动
    • US20050172305A1
    • 2005-08-04
    • US10768251
    • 2004-01-30
    • Daniel Baumberger
    • Daniel Baumberger
    • G06F9/46G06F11/14G06F13/00
    • G06F11/0712G06F9/468G06F11/0793G06F11/1438
    • By loading deprivileged drivers, such as third party supplied drivers, into a virtual machine under control of a virtual machine monitor, a kernel may be protected from faults that arise on those drivers. When a fault is detected, the system may transition from a guest mode, wherein the third party drivers operate through the virtual machine monitor, to a monitor mode, wherein the monitor takes control and provides appropriate correction if possible. In some cases, the virtual machine monitor may simply destroy and restart the virtual machine. In such cases, it may be possible to overcome the faults without crashing the entire operating system.
    • 通过将虚拟机驱动程序(如第三方提供的驱动程序)加载到虚拟机监视器控制下的虚拟机中,可以保护内核免受这些驱动程序上出现的故障。 当检测到故障时,系统可以从其中第三方驱动器通过虚拟机监视器操作的访客模式转换到监视模式,其中监视器采取控制并且如果可能的话提供适当的校正。 在某些情况下,虚拟机监视器可能会简单地销毁并重新启动虚拟机。 在这种情况下,可以克服故障而不会破坏整个操作系统。