* Joerg Roedel <joerg.roedel@amd.com> wrote:

quoted text
> Hi,
> 
> this patchset reworks the dma_*_coherent functions in the DMA layer 
> for the x86 architecture. The patch series extends the existing DMA 
> backends with missing *coherent callbacks and simplifies the generic 
> function to basically only call the registered backend. This allows 
> future optimizations in hardware specific IOMMU implementations. The 
> code ist tested on AMD64 with AMD IOMMU, GART, SWIOTLB and NOMMU as 
> well as on my old 486 box. Muli tested the Calgary specific patch.
> 
> Joerg
> 
> Changes since v1:
> 
> - fixed wrong logic in the pci-nommu alloc_coherent code
> - moved dma_*_coherent to include/asm-x86/dma-mapping.h
> 
> git diff --stat tip/master.. :
> 
>  arch/x86/kernel/amd_iommu.c      |    2 -
>  arch/x86/kernel/pci-calgary_64.c |   14 ++++
>  arch/x86/kernel/pci-dma.c        |  146 +-------------------------------------
>  arch/x86/kernel/pci-gart_64.c    |   35 +++++++++-
>  arch/x86/kernel/pci-nommu.c      |   62 ++++++++++++++++
>  include/asm-x86/dma-mapping.h    |   47 ++++++++++---
>  6 files changed, 149 insertions(+), 157 deletions(-)

applied to tip/x86/iommu - thanks Joerg!

Jesse, Fujita-san, do these changes look fine to you?

	Ingo
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