The development of multi-tasking application and architecture improvement introduce the need of virtual memory management in embedded processors . Virtual memory management is implemented through a hardware memory management unit ( MMU ) that supports address translation and protection on the fly .

随着体系结构的不断发展和多任务嵌入式系统的开发，嵌入式处理器需要提供虚拟内存管理的支持， 虚拟内存管理是通过内存管理 单元硬件实现在系统运行时的 地址转换和地址空间保护。