Messages in this thread | | | Date | Thu, 28 Apr 2011 15:30:09 +0100 | From | Russell King - ARM Linux <> | Subject | Re: [RFC] ARM DMA mapping TODO, v1 |
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On Thu, Apr 28, 2011 at 03:56:21PM +0200, Joerg Roedel wrote: > There is no waste of code, just the opposite. Most of the dma_ops > implementations that use an IOMMU today have a lot of similiarities in > their code. All this code (on x86, alpha, sparc, ia64, ...) can > be unified to a generic solution that fits all (by abstracting the > differences between iommus into the iommu-api). So the current situation > is a much bigger code waste than having this unified. The ARM platforms > supporting iommu hardware will benefit from this as well. It simply > doesn't make sense to have one dma_ops implementation for each iommu > hardware around.
I'll defer until there's patches available then - I don't think there's much value continuing to discuss this until that time.
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