On Wed, Apr 06, 2022 at 05:47:23PM +0200, Christoph Hellwig wrote: > On Wed, Apr 06, 2022 at 11:14:46AM -0300, Jason Gunthorpe wrote: > > Really? It is the only condition that dma_info_to_prot() tests to > > decide of IOMMU_CACHE is used or not, so you are saying that there is > > a condition where a device can be attached to an iommu_domain and > > dev_is_dma_coherent() returns the wrong information? How does > > dma-iommu.c safely use it then? > > arm does not use dma-iommu.c Oh. I did not know that. Thanks Jason
