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    SubjectRe: [PATCH 4/4] iommu: Add option to group multi-function devices
    On Fri, Oct 21, 2011 at 01:56:24PM -0600, Alex Williamson wrote:
    > The option iommu=group_mf indicates the that the iommu driver should
    > expose all functions of a multi-function PCI device as the same
    > iommu_device_group. This is useful for disallowing individual functions
    > being exposed as independent devices to userspace as there are often
    > hidden dependencies. Virtual functions are not affected by this option.

    This seems ok as a testing/debugging hack. But in general, surely,
    whether to group the functions should be a device quirk.

    David Gibson | I'll have my music baroque, and my code
    david AT | minimalist, thank you. NOT _the_ _other_
    | _way_ _around_!

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