On Friday 11 December 2009, Simon Richter wrote: > Hi, > > since there has been a thread on allowing the use of a coprocessor in > the kernel already: I am wondering if it'd make sense to use AltiVec for > AES in dm-crypt, and how difficult it would be to implement that. > > I'm using a PegasosII which has a G4 running at 1 GHz; I get around 3 > MB/s throughput when accessing harddisks. I think that could be > improved. > > If I understand correctly, the actual encryption work runs in a kernel > thread, which is scheduled normally, so it ought to be possible to > enable AltiVec for that thread; am I missing something here?
Sebastian Siewior has implemented this some time ago: http://old.nabble.com/-RFC-0-3--Experiments-with-AES-AltiVec,-part-2-tc10034255.html You can try the old patches on your machine to see if they are any good there. Arnd <>< _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
