Messages in this thread | | | From | Logan Gunthorpe <> | Date | Thu, 9 Sep 2021 10:51:07 -0600 | Subject | Re: [PATCH] PCI/P2PDMA: fix the wrong dma address calculation when map sg |
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On 2021-09-08 9:25 p.m., Wang Lu wrote: > The bus offset is bus address - physical address, > so the calculation in __pci_p2pdma_map_sg should be: > bus address = physical address + bus offset. > > Signed-off-by: Wang Lu <wanglu@dapustor.com>
Thanks, yes I believe my math was wrong here.
It was never tested on any machine that has a non-zero bus-offset.
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
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