Brion Vibber wrote:
I don't suppose you have any actual useful
information to give about the
actual set of kernel config options that will get DMA working on our
machines, do you? Believe it or not, *it doesn't matter* who compiled
the kernel if it doesn't have the right driver in it.
He has a generally valid point that slimmer, non-generic kernels are a
good idea on production systems. As for DMA, has anyone tried
recompiling a few times and seeing if they can hit the right options? Is
there a non-production machine where this experimentation can be done
without danger?
I run a (1+5)x100GB RAID5 storage server, and when first installing it,
couldn't get DMA to work for the life of me. I ended up writing a quick
kernel hack to make it work on my system, and I think the situation was
fixed a few kernel releases later. If you need me to look at the
machines and see what I can do, let me know.
Cheers,
Ivan.