Hugetlb HPTE hashing weirdness

[Adam Litke]

On Fri, 2005-09-23 at 15:15 +1000, Benjamin Herrenschmidt wrote:
> > Attached is my somewhat hacky hugetlb test suite.  Build it with 'make
> > all'.  I've been reproducing with:
> > 	for i in `seq 1 10`; do ./mmap-gettest 1 10; done
> > After about the third or fourth iteration, you should start to see test
> > failures.
> 
> What machine do you use ?
> 
> I can reproduce the problem on a g5 here but strangely not on any LPAR
> machine I've tested so far (all POWER5)... 

OK, another data point.  I've tested on a Power5 (p570) and I don't see
the bug.  So it must be Power4-specific.

-- 
Adam Litke - (agl at us.ibm.com)
IBM Linux Technology Center