On Thu, Jan 04, 2018 at 09:49:30AM +0100, Christoph Hellwig wrote:

On Tue, Jan 02, 2018 at 08:45:30PM +1100, Michael Ellerman wrote:

quoted

Christoph Hellwig [off-list ref] writes:

quoted

We want to use the dma_direct_ namespace for a generic implementation,
so rename powerpc to the second best choice: dma_nommu_.

I'm not a fan of "nommu". Some of the users of direct ops *are* using an
IOMMU, they're just setting up a 1:1 mapping once at init time, rather
than mapping dynamically.

Though I don't have a good idea for a better name, maybe "1to1",
"linear", "premapped" ?

It seems like a nice counter part to the dma_iommu_ops used just about
anywhere else in ppc.

But I'll happily take any maintainer bike shed decision for the next
series.  Remember that in a merge window or two it will hopefully
go away in favor of the new generic dma_direct ops.

Michael, please suggest what name you want for the next iteration,
I don't want to hold up the series on a naming bikeshed.