ttm: merge ttm_backend & ttm_tt, introduce ttm dma allocator V6

Thu Nov 17 10:03:04 PST 2011

On Wed, Nov 16, 2011 at 11:57:24AM -0500, j.glisse at gmail.com wrote:
> Respin some of the patch with syntax/typo fix + patch 10 with proper
> memory accounting of page being free.

Ran it yesterday all day and as well today using the TTM DMA (so SWIOTLB is on)
and had no trouble. This is with a Radeon HD 4870 on a AMD Phenom 6-core thingy.

Next will, when I am back, will run it with some more hardware - some ATI low-end,
NVidia low and high-end and try as well on a G5 which has a radeon card in it.

Oh, didn't even try to revert the patch you mentioned - I just used your
latest posting code and ran with that.