On Tue, Oct 08, 2013 at 10:27:22AM +0100, Andreas Herrmann wrote: > Ie. use a mask based on smr_mask_bits to map all stream IDs of an SMMU > to one context. > > This behaviour is controlled per SMMU node with DT property > "arm,smmu-mask-stream-ids" and is only allowed if just a single master > is attached to an SMMU. If the option is specified, all stream-ids > that are provided in DT for the single master have no relevance. > > This is useful/convenient if a master has more than 8 stream-ids or if > not all stream-ids are known for a master device.
Hmmm, this really scares me. What's the use-case? I worry about people inadvertently putting devices into an iommu domain because they happen to be included in a mask. Your solution seems to be targetting a single master with lots of IDs -- is this a PCI RC? Will _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu