use generic DMA mapping code in powerpc V4

[Christian Zigotzky]

Hi Christoph,

Happy new year for you too. Unfortunately we have some problems with the latest DRM patches. They modified a lot and some graphics cards don’t work anymore. During the holidays we tried to figure out where the problems are but without any success.

I will try to test your patches next week.

Cheers,
Christian

Sent from my iPhone

> On 3. Jan 2019, at 08:36, Christoph Hellwig <hch at lst.de> wrote:
> 
> Hi Christian,
> 
> happy new year and I hope you had a few restful deays off.
> 
> I've pushed a new tree to:
> 
>   git://git.infradead.org/users/hch/misc.git powerpc-dma.6
> 
> Gitweb:
> 
>   http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/powerpc-dma.6
> 
> Which has been rebased to the latests Linus tree, which has a lot of
> changes, and has also changed the patch split a bit to aid bisection.
> 
> I think 
> 
>   http://git.infradead.org/users/hch/misc.git/commitdiff/c446404b041130fbd9d1772d184f24715cf2362f
> 
> might be a good commit to re-start testing, then bisecting up to the
> last commit using git bisect.