On Thu, Nov 07, 2019 at 10:08:31AM -0600, Parav Pandit wrote: > Implement dma ops wrapper to divert dma ops to its parent PCI device > because Intel IOMMU (and may be other IOMMU) is limited to PCI devices. Yikes. I've been trying hard to get rid of pointless dma_map_ops instance. What upper layers use these child devices, and why can't they just use the parent device for dma mapping directly?
