Hi Yong Wu,
On Tue, Dec 01, 2015 at 07:29:51PM +0800, Yong Wu wrote:
> Currently We have to use iommu_detach_group and iommu_attach_group.
> Is there any plan for adding detach/attach the device within a iommu
> group?
No, there is no such plan. The reason is using attach/detach_device
always also affects the other devices in the iommu-group. Therefore
attach/detach_device was limited to devices which have no others in
their group.
Having attach/detach_group makes it more obvious to the user that the
call affects more than one device.
Joerg
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