Paging

Instead of splitting up a process’s address space into some number of variable-sized logical segments (e.g., code, heap, stack), we divide it into fixed-sized units, each of which we call a page.

• page frames - physical memory as an array of fixed-sized slots

Memory

Page Table

To record where each virtual page of the address space is placed in physical memory, the operating system usually keeps a per-process data structure known as a page table.

Virtual Address

Address Translation