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Subject: Re: [Qemu-devel] PATCH/RFC: PCI memory mapping
From: Brian Wheeler <bdwheele@indiana.edu>
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Date: Thu, 02 Apr 2009 13:42:30 -0400
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To: qemu-devel@nongnu.org

On Thu, 2009-04-02 at 20:32 +0300, Blue Swirl wrote:
> On 4/2/09, Brian Wheeler <bdwheele@indiana.edu> wrote:
> > [first off, if there's an easier way to do this, let me know!]
> >
> >  This patch adds an address mapping function to the PCI bus so the host
> >  chipset can remap PCI generated addresses to the appropriate physical
> >  addresses.
> 
> This discussion has come up many, many times, but finally the design
> was settled to the current dma API. It supports resolving guest
> addresses to host pointers, so  that part should be extended instead
> of adding new functionality. We want (one day) zero copy DMA even with
> IOMMU.
> 
> 

Is there documentation somewhere?