From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Burakov, Anatoly" <anatoly.burakov@intel.com>
Subject: Re: DPDK on IBM Power9
Date: Thu, 10 Jan 2019 08:51:53 +0000
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To: Daniel Waddington <Daniel.Waddington@ibm.com>, dev@dpdk.org
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On 09-Jan-19 10:25 PM, Daniel Waddington wrote:
> Hi,
> I'm trying to run DPDK 18.11 on IBM Power9.  Should it run?  (I'n new to DPDK on Power).
> Thx,
> Daniel
> Below is what I get:
>   
> $ sudo ./examples/ethtool/ethtool-app/ppc_64-power8-linuxapp-gcc/app/ethtool --iova-mode=pa -c7 -w 0000:01:00.0
> EAL: Detected 128 lcore(s)
> EAL: Detected 2 NUMA nodes
> EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
> EAL: Probing VFIO support...
> EAL: VFIO support initialized
> EAL: PCI device 0000:01:00.0 on NUMA socket 0
> EAL:   probe driver: 8086:1583 net_i40e
> EAL:   using IOMMU type 7 (sPAPR)
> EAL:   cannot create new DMA window, error 22 (Invalid argument)
> EAL: Could not create new DMA window
> EAL:   0000:01:00.0 DMA remapping failed, error 22 (Invalid argument)
> EAL: Requested device 0000:01:00.0 cannot be used
> Number of NICs: 0
> EAL: Error - exiting with code: 1
>    Cause: No available NIC ports!
> 

I know _where_ this happens, but as to _why_... You're IBM, you tell me! 
There have been numerous issues with VFIO/memory subsystem being pretty 
much unmaintained as far as IBM platforms support is concerned, but 
there's little i, as a maintainer, can do about it. Thomas is right, one 
more reason to ping the relevant people within IBM :)

-- 
Thanks,
Anatoly