[Xen-devel] Re: [ivtv-devel] Problems loading ivtv in Xen - DMA issues?

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 15 Jul 2005, at 13:43, David Muench wrote:

> > This will make the sync functions behave as they do in the ARM
> > architecture, which also uses bounce buffers but has at least been
> > looked over by the core kernel DMA guys.
> That doesn't work however:
Well, I think there is probably a grey area over what accesses the 
kernel can make to memory that it currently has mapped by 
dma_map_single.... I think I will just remove the direction checks from 
the sync functions, leave them in the map/unmap functions, and hope 
that suffices to get most drivers working.
Thanks for your testing efforts on this!

 -- Keir


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