[PATCH v4 03/14] PCI/P2PDMA: Add PCI p2pmem dma mappings to adjust the bus offset

[Bjorn Helgaas]

s/dma/DMA/ (in subject)

On Mon, Apr 23, 2018 at 05:30:35PM -0600, Logan Gunthorpe wrote:
> The DMA address used when mapping PCI P2P memory must be the PCI bus
> address. Thus, introduce pci_p2pmem_[un]map_sg() to map the correct
> addresses when using P2P memory.
> 
> For this, we assume that an SGL passed to these functions contain all
> P2P memory or no P2P memory.
> 
> Signed-off-by: Logan Gunthorpe <logang at deltatee.com>