Comment # 12 on bug 959230 from Oliver Neukum

(In reply to Joerg Roedel from comment #11)
> (In reply to Toomas Aas from comment #10)
> > Booting with kernel parameter 'iommu=soft' did not alleviate the problem.
> 
> Thanks for verifying this, Toomas. So the problem also shows up when no
> IOMMU is in use at all.
> 
> Oliver, any other ideas?

The EHCI driver does not touch the DMA mask. I will make a patch to force it to
the low 4GB.