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SubjectRe: [PATCH] replace CONFIG_IOMMU with CONFIG_GART_IOMMU in iommu.h
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On Sat, 19 Jul 2008 14:49:13 +0200
Joerg Roedel <joro@8bytes.org> wrote:

> On Sat, Jul 19, 2008 at 09:12:56PM +0900, FUJITA Tomonori wrote:
> >
> > I think that we need a common header file (iommu.h or whatever) for
> > what everyone needs, pci_iommu_shutdown(), no_iommu_init(), etc.
> >
> > Anyway, I did more cleanups:
> >
> > http://lkml.org/lkml/2008/7/10/510
> >
> > or
> >
> > tip/x86/gart
> >
> > Let me know if you think we still need cleanups.
>
> Now that you ask, I think the x86 DMA layer in general needs some rework
> and cleanup.

Agreed, I think that every IOMMU developer agrees :)


> The implementation specific free_coherent function is never
> called at the moment for example.

Right, x86 coherent functions need to be fixed. There are some other
areas to improve, I think.


> For paravirtualized DMA we also need
> some kind of stackable dma_ops according to Amit.

Yeah, we need that:

http://marc.info/?t=121117888500001&r=1&w=2
I think that we will need lots of IOMMU (and DMA stuff) work in the
near future.


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