On Tue, 2015-11-10 at 10:54 -0800, Andy Lutomirski wrote:
> Does that work on powerpc on existing kernels?
> Anyway, here's another crazy idea: make the quirk assume that the
> IOMMU is bypasses if and only if the weak barriers bit is set on
> systems that are missing the new DT binding.

"New DT bindings" doesn't mean much ... how do we change DT bindings on
existing machines with a FW in flash ?

What about partition <-> partition virtio such as what we could do on
PAPR systems. That would have the weak barrier bit.


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