[SPDK] Re: sysfs-pci and SPDK IOAT

Hi,

Can you try using spdk_mem_register() after you have called spdk_pci_device_map_bar()?

-Jim


On 3/22/21, 7:05 PM, "wiz.chen(a)gmail.com" <wiz.chen(a)gmail.com> wrote:

    Hi,

    we change to use SPDK pci APIs to access NTB.

    After spdk_pci_device_map_bar(), it can get the "mapped address" for accessing remote memory.

    It's okay that using memcpy to copy "data" to "mapped address":
       memcpy(mapped_addr,  data_buf, size);

    However, when using SPDK IOAT:
       spdk_ioat_build_copy(ioat, cb_arg, cb_fn, mapped_addr, data_buf, size);

        It will fail to  translate mapped_addr by spdk_vtophys().
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