Re: [PATCH 4/4] iommu: Add option to group multi-function devices

[David Gibson]

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 gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

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