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    • 6. 发明申请
    • GENERATING MULTIPLE ADDRESS SPACE IDENTIFIERS PER VIRTUAL MACHINE TO SWITCH BETWEEN PROTECTED MICRO-CONTEXTS
    • 每个虚拟机产生多个地址空间识别器,以保护受保护的微控制器
    • US20090327648A1
    • 2009-12-31
    • US12165640
    • 2008-06-30
    • Uday R. SavagaonkarMadhaven ParthasarathyRavi SahitaDavid Durham
    • Uday R. SavagaonkarMadhaven ParthasarathyRavi SahitaDavid Durham
    • G06F12/10
    • G06F12/1027G06F12/145
    • Embodiments of an invention for generating multiple address space identifiers per virtual machine to switch between protected micro-contexts are disclosed. In one embodiment, an apparatus includes privileged mode logic, an interface, and memory management logic. The privileged mode logic is to transfer control of the processor among a plurality of virtual machines. The interface is to perform a transaction to fetch information from a memory. The memory management logic is to translate an untranslated address to a memory address. The memory management logic includes a storage location, a series of translation stages, determination logic, and a translation lookaside buffer. The storage location is to store an address of a data structure for the first translation stage. Each of the translation stages includes translation logic to find an entry in a data structure based on a portion of the untranslated address. Each entry is to store an address of a different data structure for the first translation stage, an address of a data structure for a successive translation stage, or the physical address. The determination logic is to determine whether an entry is storing an address of a different data structure for the first translation stage. The translation lookaside buffer is to store translations. Each translation lookaside buffer entry includes an address source identifiers. Each address source identifier is to identify a unique micro-context. Each address source identifier is based on a virtual partition identifier. At least two of the of virtual partition identifiers are associated with one of the virtual machines
    • 公开了用于在每个虚拟机之间生成多个地址空间标识符以在受保护的微上下文之间切换的发明的实施例。 在一个实施例中,装置包括特权模式逻辑,接口和存储器管理逻辑。 特权模式逻辑是在多个虚拟机之间传送处理器的控制。 该接口是执行一个事务来从内存中获取信息。 存储器管理逻辑将非翻译地址转换为存储器地址。 存储器管理逻辑包括存储位置,一系列翻译级,确定逻辑和翻译后备缓冲器。 存储位置是存储用于第一翻译阶段的数据结构的地址。 每个翻译阶段包括翻译逻辑,以基于未翻译地址的一部分在数据结构中找到条目。 每个条目是存储用于第一翻译阶段的不同数据结构的地址,用于连续翻译阶段的数据结构的地址或物理地址。 确定逻辑是确定条目是否存储用于第一翻译阶段的不同数据结构的地址。 翻译后备缓冲区用于存储翻译。 每个翻译后备缓冲器条目包括地址源标识符。 每个地址源标识符是识别唯一的微观上下文。 每个地址源标识符都是基于虚拟分区标识符。 至少两个虚拟分区标识符与一个虚拟机相关联