Jason Thorpe wrote:
> Is that as clear as mud?  :-)

:-) It's very clear to me, thank you.

But I've got some perplexity.
You said: 
>Linux would also have to translate linear buffers into DMA segments...

There is no such a thing in my Linux code.
So, have I to translate linear buffers into DMA segments? Why?
Could exists some circumstances where this is useless?
May Linux pass linear buffer already translated into DMA segments?
Too many trivial questions? ;-)

Damn... these two o.s. philosophy are so different... and it's so dark
to me... I think I'll need a compass and a sexstant... 
--
  Dante_