Christoph Hellwig
2022-Apr-06 15:47 UTC
[PATCH 1/5] iommu: Replace uses of IOMMU_CAP_CACHE_COHERENCY with dev_is_dma_coherent()
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