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    • 7. 发明申请
    • Dynamic Configuration and Peripheral Access in a Processor
    • 处理器中的动态配置和外设访问
    • US20160283402A1
    • 2016-09-29
    • US14666087
    • 2015-03-23
    • Intel Corporation
    • Steffen SchulzPatrick Koeberl
    • G06F12/14G06F11/07G06F11/30
    • G06F12/145G06F11/073G06F11/0757G06F11/3034G06F11/3037G06F12/1483G06F21/00G06F2212/1052
    • In various implementations, a system includes a memory, a processor, and an execution-aware memory protection unit (EA-MPU). The EA-MPU is configured to regulate memory access by the processor based at least on the identity of a subject executable that requests access, and on the address to which access is requested, and on permissions information that identifies which subject executables are to be granted access to each of several memory regions. In various implementations, the permissions information itself is stored among the several memory regions. Various configurations of the permissions information can be used to provide shared memory regions for communication among two or more stand-alone trusted software modules, to protect access to devices accessible through memory-mapped I/O (MMIO), to implement a flexible watchdog timer, to provide security for software updates, to provide dynamic root of trust measurement services, and/or to support an operating system.
    • 在各种实现中,系统包括存储器,处理器和执行感知存储器保护单元(EA-MPU)。 EA-MPU被配置为基于至少基于请求访问的主体可执行文件的身份以及请求访问的地址以及用于识别要授予哪个主体可执行文件的许可信息来调节处理器的存储器访问 访问几个内存区域中的每一个。 在各种实现中,权限信息本身存储在几个存储区域中。 可以使用许可信息的各种配置来提供用于在两个或更多个独立的可信软件模块之间进行通信的共享存储器区域,以保护对通过存储器映射I / O(MMIO)可访问的设备的访问,以实现灵活的看门狗定时器 为软件更新提供安全性,提供信任度量服务的动态根,和/或支持操作系统。