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SubjectRE: [PATCH 1/4] iommu: Add iommu_device_group callback and iommu_group sysfs entry
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> > That way the domain information is available generically (can be match
> > with pci_domain_nr() for example), and sysfs can then be layed out as
> >
> > /sys/bus/pci/groups/<domain>/<id>
> >
> > Which is nicer than having enormous id's
>
> Seems fine to me (although I missed /sys/bus/pci/groups/ introduction), except that I think
> the freescale folks aren't interested in PCI which is one reason why the thing is just an
> opaque id.

We are interested in PCI, but non-PCI as well. All DMA devices,
have a globally unique "logical I/O device number" (LIODN) which
will map to a group # for us.

Stuart



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