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SubjectRe: [RFC PATCH 3/4] iommu: Preallocate iommu group when probing devices
On Wed, Jan 01, 2020 at 01:26:47PM +0800, Lu Baolu wrote:
> This splits iommu group allocation from adding devices. This makes
> it possible to determine the default domain type for each group as
> all devices belonging to the group have been determined.

I think its better to keep group allocation as it is and just defer
default domain allocation after each device is in its group. But take
care about the device hotplug path which might add new devices to groups
which already have a default domain, or add new groups that might need a
default domain too.



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