[Bug 945] [DPDK. 22.03-rc2] net/mlx5 - Failed to import device for fd=0; Operation Not Supported

[Bug 945] [DPDK. 22.03-rc2] net/mlx5 - Failed to import device for fd=0; Operation Not Supported

[bugzilla]

https://bugs.dpdk.org/show_bug.cgi?id=945

            Bug ID: 945
           Summary: [DPDK. 22.03-rc2] net/mlx5 - Failed to import device
                    for fd=0; Operation Not Supported
           Product: DPDK
           Version: unspecified
          Hardware: POWER
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: other
          Assignee: dev@dpdk.org
          Reporter: drc@linux.vnet.ibm.com
  Target Milestone: ---

Building DPDK 22.03-rc2 on a PowerNV P9 system with Ubuntu 20.04.3 and upstream
RDMA libraries.  Running l2fwd application generates the following error:

sudo ./build/examples/dpdk-l2fwd -l 8-15 -n 4 -- -q 1 -p 0x3
EAL: Detected CPU lcores: 128
EAL: Detected NUMA nodes: 2
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'VA'
EAL: VFIO support initialized
EAL: Probe PCI driver: mlx5_pci (15b3:1019) device: 0000:01:00.0 (socket 0)
mlx5_common: Failed to import device for fd=0: Operation not supported
mlx5_common: Failed to initialize device context.
EAL: Requested device 0000:01:00.0 cannot be used
EAL: Probe PCI driver: mlx5_pci (15b3:1019) device: 0000:01:00.1 (socket 0)
mlx5_common: Failed to import device for fd=0: Operation not supported
mlx5_common: Failed to initialize device context.
EAL: Requested device 0000:01:00.1 cannot be used
EAL: Probe PCI driver: mlx5_pci (15b3:1019) device: 0030:01:00.0 (socket 8)
mlx5_common: Failed to import device for fd=0: Operation not supported
mlx5_common: Failed to initialize device context.
EAL: Requested device 0030:01:00.0 cannot be used
EAL: Probe PCI driver: mlx5_pci (15b3:1019) device: 0030:01:00.1 (socket 8)
mlx5_common: Failed to import device for fd=0: Operation not supported
mlx5_common: Failed to initialize device context.
EAL: Requested device 0030:01:00.1 cannot be used
TELEMETRY: No legacy callbacks, legacy socket not created
MAC updating enabled
EAL: Error - exiting with code: 1
  Cause: No Ethernet ports - bye

Running "git bisect" identifies the following commit as causing the problem:

9d936f4f1a -  common/mlx5: glue device and PD import

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[Bug 945] [DPDK. 22.03-rc2] net/mlx5 - Failed to import device for fd=0; Operation Not Supported

[bugzilla]

https://bugs.dpdk.org/show_bug.cgi?id=945

David Christensen (drc@linux.vnet.ibm.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|UNCONFIRMED                 |RESOLVED

--- Comment #4 from David Christensen (drc@linux.vnet.ibm.com) ---
Fixed in:

2c75b9bcd5 - common/mlx5: fix default devargs initialization <Michael Baum>

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