Re: [PATCH 0/5] fix iommu sg list merge problem

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On Wed, Sep 26, 2007 at 05:57:57PM +0900, FUJITA Tomonori wrote:

> iommu code merges sg lists without considering lld's restrictions so
> some llds need a workaround to split sg lists again. This patchset
> fixes iommu to handle lld's max segment size limit properly.

The patches look reasonable to me.

> This patchset includes only the x86_64 iommu patch

There are multiple x86-64 IOMMUs, but only GART is in-tree and
supports merging.

> but my git tree includes x86_64, ppc, ia64, parisc, and alpha
> patches. As far as I know, thye are all the iommu code that merges
> sg lists. The iommu patchse are only compile tested.
> 
>
> git://git.kernel.org/pub/scm/linux/kernel/git/tomo/linux-2.6-bidi.git iommu

Do you think it will be possible to abstract the merging code into
common code, rather than duplicating it for every IOMMU?

Cheers,
Muli
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