On Thu, Sep 01, 2022 at 03:29:16PM +0100, Robin Murphy wrote: > Right, the next step would be to bridge that gap to iommu-dma to dump the > flush queue when IOVA allocation failure implies we've reached the > "rollover" point, and perhaps not use the timer at all. By that point a > dedicated domain type, or at least some definite internal flag, for this > alternate behaviour seems like the logical way to go. At least on this direction, I've been thinking it would be nice to replace the domain type _FQ with a flag inside the domain, maybe the ops, saying how the domain wants the common DMA API to operate. If it wants FQ mode or other tuning parameters Jason
