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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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