Address space and address generation

1. Different methods of managing memory in the operating system
* program relocation
* segmentation
* paging
* virtual memory
* paging virtual memory on demand
2. Implementation is highly dependent on hardware
* memory architecture must be known
* MMU (memory management unit): hardware The component is responsible for processing the memory access request of the CPU

3. The relationship between the logical address and the physical address is completed by the operating system