page fault

<memory management> 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

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Nearby terms:

paged « Page Description Language « Paged Memory Management Unit « page fault » page in » pagelet » page mode

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