I have attached a patch, containing some fixes for some of the cache
routines.
Most of it is related to the MIPS32/MIPS64 specific routines, but it
also contain a fix, which appear to be needed in all of the dma flushing
routines. The problem is that we sometimes flush a cache line too much.
Ralf, could you please take a look at it ?

/Carsten



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