| Date | Wed, 29 Jun 2022 08:42:35 +0200 | From | Christoph Hellwig <> | Subject | Re: [PATCH v7 11/21] RDMA/core: introduce ib_dma_pci_p2p_dma_supported() |
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On Wed, Jun 15, 2022 at 10:12:23AM -0600, Logan Gunthorpe wrote: > Introduce the helper function ib_dma_pci_p2p_dma_supported() to check > if a given ib_device can be used in P2PDMA transfers. This ensures > the ib_device is not using virt_dma and also that the underlying > dma_device supports P2PDMA. > > Use the new helper in nvme-rdma to replace the existing check for > ib_uses_virt_dma(). Adding the dma_pci_p2pdma_supported() check allows > switching away from pci_p2pdma_[un]map_sg(). > > Signed-off-by: Logan Gunthorpe <logang@deltatee.com> > Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> > Reviewed-by: Max Gurtovoy <mgurtovoy@nvidia.com>
Looks good:
Reviewed-by: Christoph Hellwig <hch@lst.de>
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