Erik Andersen wrote:
> I just tried again and while using iommu=soft does avoid the
> corruption problem, as with previous kernels with 2.6.20-rc5
> using iommu=soft still makes my pcHDTV HD5500 DVB cards not work.
> I still have to disable memhole and lose 1 GB.  :-(

Please add this to the bugreport
(http://bugzilla.kernel.org/show_bug.cgi?id=7768)

Chris.