HomeOperating Systems

Page Fault

Webopedia Staff
Webopedia Staff
Updated on:
An interrupt that occurs when a program requests data that is not currently in real memory. The interrupt triggers the operating system to fetch the data from a virtual memory and load it into RAM.

An invalid page fault or page fault error occurs when the operating system cannot find the data in virtual memory. This usually happens when the virtual memory area, or the table that maps virtual addresses to real addresses, becomes corrupt.

Webopedia Staff
Webopedia Staff
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