PowerPC paxtest results w/ gcc-4.1

Segher Boessenkool segher at kernel.crashing.org
Thu Aug 17 03:49:17 EST 2006

> I never understood why PTE entries waste 4 bits (WIMG)
> for effectively very few valid combinations.

The only invalid combinations are WI=11 -- if you know of
a way to fit 12 combinations in fewer than 4 bits, let us
know :-)

Not all of those 12 are very useful, of course.


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