请求分页存储管理方式的模拟实现，包括相应的说明文件-request tabbed storage management methods to achieve the simulation, including the corresponding notes

操作系统分析JCINX的内存管理单元V-#ifndef __DEF_VMM_H__ #define __DEF_VMM_H__ //! Magic number to identify a memory block for kernel space. #define MCB_MAGIC *((unsigned long*)"$MCB") //! Magic number to identify a memory block for user mode space. #