[PATCH] DMA 4GB boundary protection

[Paul Mackerras]

Jake Moilanen writes:

> I just had to realign the start_index in case it didn't start at a 4GB
> boundary.  Other than that, it worked like a champ.  I also changed to
> for loop to exit if it's the last entry.

If this is now suitable for going upstream, please re-send with a
proper patch description, e.g. the original patch description modified
or augmented as necessary for the changes you've made.  A description
of what has changed since the previous version of the patch is not
suitable as the commit text in the git repository.

Paul.