Abstraction: address space a Not to expose physical address to programmers o Crash OS 口 Hard to parallelize Two problems to solve a Protection a Relocation Address space aa set of memory processes can use to address memory a Each process has its own address space, independent of each other How?Abstraction: address space ◼ Not to expose physical address to programmers ❑ Crash OS ❑ Hard to parallelize ◼ Two problems to solve: ❑ Protection ❑ Relocation ◼ Address space: ❑ A set of memory processes can use to address memory ❑ Each process has its own address space, independent of each other ❑ How?