Linus Torvalds writes: (Summary) They can block
and get interrupted etc.
and get interrupted etc.
The fast cases are basically "just get me the pages, dammit, and if you can't get some page, stop".
you can't get some page, stop".
At least that's one excuse for the difference in behavior. The real excuse is probably just "that's how it worked" - the fast case just walked the page tables and that was it.
case just walked the page tables and that was it.
Linus
Linus
Linus
and get interrupted etc.
The fast cases are basically "just get me the pages, dammit, and if you can't get some page, stop".
you can't get some page, stop".
At least that's one excuse for the difference in behavior. The real excuse is probably just "that's how it worked" - the fast case just walked the page tables and that was it.
case just walked the page tables and that was it.
Linus
Linus
Linus