On Thu, Mar 11, 2021 at 04:31:37PM -0700, Logan Gunthorpe wrote:> +int dma_pci_p2pdma_supported(struct device *dev)> +{> + const struct dma_map_ops *ops = get_dma_ops(dev);> +> + return !ops || ops->flags & DMA_F_PCI_P2PDMA_SUPPORTED;> +}> +EXPORT_SYMBOL(dma_pci_p2pdma_supported);EXPORT_SYMBOL_GPL like all new DMA APIs.