> the main problem is that if you malloc() (sizeof RAM) + (sizeof swap),
> the system will crash.

Just some nit-picking:

malloc'ing alone will do nothing to the system. You'll have to actually
write something to the malloc'ed space (by e.g. using calloc).

And technically speaking, it will not crash, but only bring the system
to a halt, as it will be busy to try paging, but will fail since there
isn't enough swap space.
 --
ws@TooLs.DE     (Wolfgang Solfrank, TooLs GmbH) 	+49-228-985800