Paging Each process has its own page table Each page table entry contains the frame number of the corresponding page in main memory Two extra bits are needed to indicate P(resent whether the page is in main memory or not M(odified): whether the contents of the page has been altered since it was last loaded11 Paging • Each process has its own page table • Each page table entry contains the frame number of the corresponding page in main memory • Two extra bits are needed to indicate: – P(resent): whether the page is in main memory or not – M(odified): whether the contents of the page has been altered since it was last loaded