具体来说，系统没有一个可以支持虚拟内存的内存管理单元。
On the extreme end, ports like uClinux and ELKS target processors that are "too small" for regular Linux; in particular, systems without a memory-management unit that can support virtual memory.
这既不需要使用内存管理单元，也不需要使用指令或数据缓存。
Neither a memory management unit nor an instruction or data cache are used.
Pacifica还可以使用宿主和客户内存管理单元(MMU)表来进行地址转换。
Pacifica also amends address translation with host and guest memory management unit (MMU) tables.
它具有一个集成的内存管理单元，通常使用与PPE类似的页表查询机制来提供对某个进程地址空间的访问。
It has an integrated memory management unit that is normally used to provide access to the address space of one process by using the same page table lookup as the PPE.
针对传统系统级芯片动态内存管理单元(SOCDMMU)，提出用软件方法实现SOCDMMU中的核心部件。
Aiming at traditional System on Chip Dynamic Memory Manage Unit (SOCDMMU), this paper proposes realizing the core parts of SOCDMMU with the software method.
一个例子是Linux可以在一个具有内存管理单元(MMU)的处理器上运行，也可以在那些不提供MMU的处理器上运行。
One example is the ability for Linux to run on a process with a memory management unit (MMU), as well as those that provide no MMU.
另一方面，超过8MB也不一定更好，因为操作系统重新装入MMU(内存管理单元，Memory Management Unit)表时会浪费时间。
On the other hand, more than 8 MB is not necessarily better, as the operating system can waste time reloading the MMU (Memory Management Unit) tables.
为了解决这一问题，本文设计了高效内存管理器(HPMM)来负责内存单元的申请与释放。
In order to solve this problem we designed the High Performance memory Manager (HPMM) that is responsible for the allocation and deallocation of the memory in F-Miner algorithm.
为了解决这一问题，本文设计了高效内存管理器(HPMM)来负责内存单元的申请与释放。
In order to solve this problem we designed the High Performance memory Manager (HPMM) that is responsible for the allocation and deallocation of the memory in F-Miner algorithm.
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