The ARM MMU(Memory Management Unit) allows two different ways to perform a context switch between applications, using either register 2 (page directory base address) or register 3 (domain access permissions) of the ARM system control coprocessor CP15. Describe how these two methods work. What are the advantages or disadvantages of each method?

31 20 19 section index virtual address table index 31 14 13 CP15 register 2 page directory base address 31 14 13 2 10 page directory base address table index 00 5 4 3 2 10 12 11 10 9 8 00 AP 0 domain ? CB10 31 20 19 memory section base address access 31 20 19 section index physical address section base address 31 memory data access