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I was trying to figure out where it should go and I looked at Documentation/process/submit-checklist.rst and point 4 had me a bit puzzled: 4) ppc64 is a good architecture for cross-compilation checking because it tends to use ``unsigned long`` for 64-bit quantities. It took me a while to realize that this must have been written when 64 bit systems were new and rare. :P This documentation is old old old... regards, dan carpenter