Re: copy_from_user/copy_to_user question

[Andi Kleen]

Steven Rostedt <rostedt@xxxxxxxxxxx> 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
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