Re: [PATCH 2/2] arm: use swiotlb for bounce buffer on LPAE configs

[Christoph Hellwig]

On Wed, Jul 24, 2019 at 07:23:50PM +0200, Nicolas Saenz Julienne wrote:
> Out of curiosity, what is the reason stopping us from using dma-direct/swiotlb
> instead of arm_dma_ops altogether?

Nothing fundamental.  We just need to do a very careful piecemeal
migration as the arm code handles a ot of interesting corner case and
we need to ensure we don't break that.  I have various WIP patches
for the easier bits and we can work from there.