Re: [PATCH] quiet down swiotlb warnings

[Rik van Riel]

Andi Kleen wrote:
> On Fri, Jun 01, 2007 at 01:00:49PM -0700, Andrew Vasquez wrote:
> > yes, the card can support 64bit DMA transfers. but in this case the
> > 'required' DMA mask returned from dma_get_required_mask() states that a
> > 32bit mask would suffice.
>
> That's a bug in the kernel then that needs to be fixed. Find out
> why it does that and change it. Don't fix the symptoms, fix the root cause.

The system in question only has 2GB of memory.

Why would it need to do 64 bit DMA?

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