Re: copy_from_user/copy_to_user question

Andi Kleen
2005-12-03T18:06:24Z

Steven Rostedt <rostedt@goodmis.org> writes:
>
> Nope, the kernel is always locked into memory. If you take a page fault
> from the kernel world, you will crash and burn. The kernel is never
> "swapped out". So if you are in kernel mode, going into do_page_fault
> in arch/i386/mm/fault.c there is no path to swap a page in.

Actually there is - when the page fault was caused by *_user.

-Andi