Difference between revisions of "Page fault"
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Revision as of 03:44, 27 September 2017
A page fault is an event in a virtual memory system when the CPU makes a reference to a page in the current process' address space which is not 'resident' - i.e. it is currently on secondary storage, not in main memory.
When this happens, a trap results; before the faulting instruction can be re-started, the page has to be brought into main memory.
