Research on re-redirection of overlapped address spaces
Yi Guo Song · Jisuanji gongcheng yu sheji · 2010
To improve the performance of operating system kernel,while switching between multiple tasks,using FCSE(fast context switching extension) of ARM920T embedded processors,re-redirection of address spaces is implemented.Firstly,address spaces of task is redirected to a segment of single address space.Secondly,this segment is redirected to physical memory space by memory management unit.As information of address translation from single address space to physical memory address space keeps valid,there is no necessary for MMU(memory management unit) to flush the TLB(translation look-aside buffer),and performance of kernel could be improved.Finally a stable kernel is implemented on virtual machine.