Issue on page /mm/virt-paging.html

[sunni426]

May be helpful to define what page fault is at the beginning here! https://okrieg.github.io/openos/textbook/mm/virt-paging.html#memory-over-commitment-and-paging From what I am reading elsewhere on the internet, page faults seem to be an exception raised by the MMU, and if that is what page faults are referring to here, it may be really hellpful to extend/connect that with the dynamic fetch. Should page faults be avoided, or is it good to "allow data to be dynamically fetched into memory when it is needed"? (sorry if this is not a completely accurate question, I'm a little confused about whether page faults are a utility here or to be avoided or something else)

Thank you!