4-48 Vol. 3A

PAGING

One approach to combining paging and segmentation that simplifies memory-management software is to give each 
segment its own page table, as shown in Figure 4-13. This convention gives the segment a single entry in the page 
directory, and this entry provides the access control information for paging the entire segment.

Figure 4-13.  Memory Management Convention That Assigns a Page Table

to Each Segment

Seg. Descript.

LDT

Seg. Descript.

PDE

Page Directory

PDE

PTE
PTE
PTE

PTE
PTE

Page Tables

Page Frames