On Wed, Apr 24, 2019 at 07:58:19AM -0700, Christoph Hellwig wrote: > I'd be tempted to do that. But lets just ask Joerg if he has > any opinion..
The reason was that it is an unlikely path, as hardware implementations are not allowed to set this bit. It is purely for emulated AMD IOMMUs. I have not measured whether this annotation has any performance benefit, but I find it more readable at least. Regards, Joerg PS: Why did you drop me from the Cc list of the previous replies? _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu