On Wed, Aug 01, 2018 at 06:22:16PM +0800, Kenneth Lee wrote: > From: Kenneth Lee <liguozhu@xxxxxxxxxxxxx> > > This patch add sharing interface for a iommu_group. The new interface: > > iommu_group_share_domain() > iommu_group_unshare_domain() > > can be used by some virtual iommu_group (such as iommu_group for spimdev) > to share their parent's iommu_group. > > When the domain of the group is shared, it cannot be changed before > unshared. In the future, notification can be added if update is required. >From the description or the patch I don't really get why this is needed. Please update the description and make a case for this API addition. Joerg
