[PATCH 1/3] powerpc: Optimise 64bit csum_partial

[Segher Boessenkool]

> On both POWER6 and POWER7 this should be as fast as we can go since
> we are limited by the latency of the adde instructions.

Not really.  Do you know how many 16/32-bit words you can add before a
64-bit register can overflow? :-)
If you ever have to call this with more than 16GB of data to sum, that's
easy to handle as well of course (just break it into pieces).


Segher