On Tue, Nov 06, 2018 at 02:39:26PM +0000, Robin Murphy wrote: > ...and I have some significant objections to that simplification which I > plan to respond with ;) > > (namely that it defaults the whole higher-order page allocation business > which will have varying degrees of performance impact on certain cases)
Well, please place your objection there. The behavior does match what every other iommu-based dma ops implementation ouside of arm/arm64 does, so there is some precedent for it to say the least. But if the only current users objects I'll surely find a way to accomodate it, but a good rationale including numbers would be useful to document it. _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
