Virtual Address Translation

VPN

offset

29

0

13

Example: typical 32-bit

architecture with 8KB pages.

address

translation

Virtual address translation maps a virtual page number (VPN) to a physical page frame number (PFN): the rest is easy.

PFN

offset

+

00

virtual address

physical address

{

Deliver exception to

OS if translation is not

valid and accessible in

requested mode.

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