page fault
In a paged virtual memory system, an access to a page (block) of memory that is not currently mapped to physical memory. When a page fault occurs the operating system either fetches the page in from secondary storage (usually disk) if the access was legitimate or otherwise reports the access as illegal.
Last updated: 1995-11-11
Nearby terms:
Page Description Language ♦ Paged Memory Management Unit ♦ page fault ♦ page in ♦ pagelet
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