[parisc-linux] /usr/conf/machine header files

[Philipp Rumpf]

> This directory seems to be a gold mine of information about hardware.

One extremely interesting piece of information for those interested in the
PA2.0 port:  64-bit virtual addresses are 42 bits per quadrant only and
start at the smallest address in the quadrant - so unlike alpha where the
addresses are "sign-extended".

	Philipp Rumpf