Re: [PATCH v7 04/21] PCI/P2PDMA: Introduce helpers for dma_map_sg implementations

Looks good: Reviewed-by: Christoph Hellwig ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu

[PATCH v7 04/21] PCI/P2PDMA: Introduce helpers for dma_map_sg implementations

Add pci_p2pdma_map_segment() as a helper for simple dma_map_sg() implementations. It takes an scatterlist segment that must point to a pci_p2pdma struct page and will map it if the mapping requires a bus address. The return value indicates whether the mapping required a bus address or whether the