Re: BUG in drivers/dma/ioat/dma_v2.c:314

[David Woodhouse]

On Wed, 2010-06-30 at 19:26 +0100, Chris Li wrote:
> 
> The delta seems to be this line:
> ioatdma 0000:00:0f.0: ioat2_set_chainaddr: chainaddr: ffffe000 

That's a reasonable address if the IOMMU is enabled. We start at 4GiB
and work down, so that's the second page given out (or the first 8KiB
chunk).

It looks like the DMA is going AWOL causing the initialisation to
fail... but it's interesting that there are no DMA faults reported by
the IOMMU.

-- 
David Woodhouse                            Open Source Technology Centre
David.Woodhouse@xxxxxxxxx                              Intel Corporation

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