.. _page_fault:

Page Faults
----------------------

.. index:: page_fault

.. figure:: pg_fault_handle.png
   :align: center


Handling of a Page Fault
^^^^^^^^^^^^^^^^^^^^^^^^^^^^

#. Check the location of the referenced page in the PMT

#. If a page fault occured, call on the operating system to fix it

#. Using the frame replacement algorithm, find the frame location

#. Read the data from disk to memory

#. Update the page map table for the process

#. The instruction that caused the page fault is restarted when the process
   resumes execution.