Fault processing for direct memory access address translation
    1.
    发明申请
    Fault processing for direct memory access address translation 有权
    直接存储器访问地址转换的故障处理

    公开(公告)号:US20060075285A1

    公开(公告)日:2006-04-06

    申请号:US10956630

    申请日:2004-09-30

    IPC分类号: G06F11/00

    摘要: An embodiment of the present invention is a technique to process faults in a direct memory access address translation. A register set stores global control or status information for fault processing of a fault generated by an input/output (I/O) transaction requested by an I/O device. An address translation structure translates a guest physical address to a host physical address. The guest physical address corresponds to the I/O transaction and is mapped to a domain. The address translation structure has at least an entry associated with the domain and domain-specific control information for the fault processing.

    摘要翻译: 本发明的一个实施例是一种在直接存储器访问地址转换中处理故障的技术。 寄存器组存储由I / O设备请求的输入/输出(I / O)事务产生的故障的故障处理的全局控制或状态信息。 地址转换结构将访客物理地址转换为主机物理地址。 访客物理地址对应于I / O事务,并映射到域。 地址转换结构至少具有与域相关联的条目和用于故障处理的特定于域的控制信息。

    Caching support for direct memory access address translation
    2.
    发明申请
    Caching support for direct memory access address translation 有权
    缓存支持直接内存访问地址转换

    公开(公告)号:US20060075147A1

    公开(公告)日:2006-04-06

    申请号:US10956206

    申请日:2004-09-30

    IPC分类号: G06F3/00 G06F13/28 G06F12/00

    摘要: An embodiment of the present invention is a technique to provide cache support for direct memory access address translation. A cache structure stores cached entries used in address translation of a guest physical address to a host physical address. The guest physical address corresponds to a guest domain identified by a guest domain identifier in an input/output (I/O) transaction requested by an I/O device. A register stores an invalidating domain identifier identifying an invalidating domain and an indicator indicating invalidating an entry in the cached entries having a tag.

    摘要翻译: 本发明的实施例是提供用于直接存储器访问地址转换的高速缓存支持的技术。 高速缓存结构将客户物理地址的地址转换中使用的缓存条目存储到主机物理地址。 访客物理地址对应于由I / O设备请求的输入/输出(I / O)事务中的来宾域标识符标识的访客域。 寄存器存储标识无效域的无效域标识符和指示使具有标签的缓存条目中的条目无效的指示符。

    Fault processing for direct memory access address translation
    3.
    发明授权
    Fault processing for direct memory access address translation 有权
    直接存储器访问地址转换的故障处理

    公开(公告)号:US07340582B2

    公开(公告)日:2008-03-04

    申请号:US10956630

    申请日:2004-09-30

    IPC分类号: G06F12/00 G06F13/00

    摘要: An embodiment of the present invention is a technique to process faults in a direct memory access address translation. A register set stores global control or status information for fault processing of a fault generated by an input/output (I/O) transaction requested by an I/O device. An address translation structure translates a guest physical address to a host physical address. The guest physical address corresponds to the I/O transaction and is mapped to a domain. The address translation structure has at least an entry associated with the domain and domain-specific control information for the fault processing.

    摘要翻译: 本发明的一个实施例是一种在直接存储器访问地址转换中处理故障的技术。 寄存器组存储由I / O设备请求的输入/输出(I / O)事务产生的故障的故障处理的全局控制或状态信息。 地址转换结构将访客物理地址转换为主机物理地址。 访客物理地址对应于I / O事务,并映射到域。 地址转换结构至少具有与域相关联的条目和用于故障处理的特定于域的控制信息。

    Caching support for direct memory access address translation
    4.
    发明授权
    Caching support for direct memory access address translation 有权
    缓存支持直接内存访问地址转换

    公开(公告)号:US07334107B2

    公开(公告)日:2008-02-19

    申请号:US10956206

    申请日:2004-09-30

    IPC分类号: G06F12/00 G06F13/28

    摘要: An embodiment of the present invention is a technique to provide cache support for direct memory access address translation. A cache structure stores cached entries used in address translation of a guest physical address to a host physical address. The guest physical address corresponds to a guest domain identified by a guest domain identifier in an input/output (I/O) transaction requested by an I/O device. A register stores an invalidating domain identifier identifying an invalidating domain and an indicator indicating invalidating an entry in the cached entries having a tag.

    摘要翻译: 本发明的实施例是提供用于直接存储器访问地址转换的高速缓存支持的技术。 高速缓存结构将客户物理地址的地址转换中使用的缓存条目存储到主机物理地址。 访客物理地址对应于由I / O设备请求的输入/输出(I / O)事务中的来宾域标识符标识的访客域。 寄存器存储标识无效域的无效域标识符和指示使具有标签的缓存条目中的条目无效的指示符。

    Direct memory access (DMA) address translation between peer-to-peer input/output (I/O) devices
    10.
    发明授权
    Direct memory access (DMA) address translation between peer-to-peer input/output (I/O) devices 有权
    点对点输入/输出(I / O)设备之间的直接存储器访问(DMA)地址转换

    公开(公告)号:US08706942B2

    公开(公告)日:2014-04-22

    申请号:US11026314

    申请日:2004-12-29

    IPC分类号: G06F13/36

    CPC分类号: G06F13/28

    摘要: A method and apparatus is described herein for supporting direct memory accesses between peer I/O devices. It is determined whether a guest physical address (GPA) referenced by an access generated from an I/O device, is within a range of GPAs associated with local I/O devices based at least in part on a GPA base and a GPA window size. If the GPA is within the window, then the GPA is translated to an HPA based at least in part on a base HPA associated with a local device and then forwarded to that local device. However, if the GPA is not within the window, then the access is forwarded upstream.

    摘要翻译: 这里描述了一种用于支持对等I / O设备之间的直接存储器访问的方法和装置。 确定由I / O设备产生的访问所引用的访客物理地址(GPA)是否至少部分地基于GPA基础和GPA窗口大小在与本地I / O设备相关联的GPA的范围内 。 如果GPA在窗口内,则GPA至少部分基于与本地设备关联的基本HPA转换为HPA,然后转发到该本地设备。 但是,如果GPA不在窗口内,那么访问将在上游转发。