Re: [Xen-devel] Using arch/x86_64/pci-dma in x86_64 Xen

[Jon Mason <jdmason@xxxxxxxxxx>]

On Thu, May 04, 2006 at 09:57:35AM -0500, Langsdorf, Mark wrote:
> The current implementation of pci-dma in x86_64 Xen
> Linux is to use the i386 implementation.  I don't
> believe this is sustainable in the long term, as
> x86_64 Xen is going to need more DMA solutions than
> just SWIOTLB and plain hardware as various IOMMU 
> implementations arrive.  
> 
> The mainstream kernel has a clean abstraction layer
> with the dma_ops that should be portable to Xen dom0
> and domU.  I've started implementing this in a
> pci-dma-xen for x86_64 Xen Linux.  Am I stepping on 
> anyone's toes or is there anyone I should be 
> co-ordinating this with?

This is long overdue.  Thanks for starting the work.  

Muli and I have been peripherally looking at this, but have not done any
work on it yet.  Please keep us in the loop, and let us know if you need
any help :)

Thanks,
Jon

> 
> -Mark Langsdorf
> AMD, Inc.
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel