On Sat, Dec 17, 2011 at 08:23:47 -0500,
  Josh Boyer <[email protected]> wrote:
> 
> Defaulting this to on has caused a number of odd issues in the past,
> and it is mostly used by people using VT-d to assign physical
> resources directly to virtual guests.  Those doing that can still boot
> with intel_iommu=on.

Does this affect the ability of hostile firewire devices to be able to
access memory of a running system?
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