>>
>> The problem seems to be caused by the usage of plain memcpy in set_data_inl_seg().
>> The address provided by SMC-code in struct ib_send_wr *wr is an
>> address belonging to an area mapped with the ib_dma_map_single()
>> call. On s390x those kind of addresses require extra access functions (see arch/s390/include/asm/io.h).
>>
By definition, when you are posting a send request with inline, the address must be mapped to the cpu so plain memcpy should work.
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