intel_iommu=off default [was Re: rpms/kernel/devel linux-2.6-defaults-intel_iommu-off.patch, NONE, 1.1 kernel.spec, 1.1225, 1.1226]

[Mark McLoughlin]

On Mon, 2009-01-26 at 09:05 +0000, Mark McLoughlin wrote:
> Hi Kyle,
> 
> On Fri, 2009-01-23 at 18:49 +0000, Kyle McMartin wrote:
> 
> >  * Fri Jan 23 2009 Kyle McMartin <kyle at redhat.com>
> > - disable intel_iommu by default (enable with "intel_iommu=on")
> 
> Why so?
> 
> We're pretty much guaranteed that no-one will enable this ... do we know
> of specific hardware that this is breaking?

Okay, yaneti pointed out the fedora-test-list discussion:

  https://www.redhat.com/archives/fedora-test-list/2009-January/msg00380.html

Is this the only known issue right now?

  https://bugzilla.redhat.com/show_bug.cgi?id=479996

I've sent on some details to:

  https://lists.linux-foundation.org/pipermail/iommu/2009-January/001028.html

Cheers,
Mark.