7.9. Translating Small Page References

Figure 7.6 illustrates the complete translation sequence for a 4KB Small Page. Page translation involves one additional step beyond that of a section translation: the Level 1 Descriptor is the Page Table descriptor, and this is used to point to the Level 2 Descriptor, or Page Table Entry. As the access permissions are now contained in the Level 2 Descriptor they must be checked before the physical address is generated. The sequence for checking access permissions is described later.

Figure 7.6. Small page translation

Copyright © 1997, 1998 ARM Limited. All rights reserved.DDI 0087E
Non-Confidential