[dpdk-dev] Error running dpdk app: cannot open /dev/uio

[Qiu, Michael]

Hi Malveeka,

To be sure that you should have [uio, igb_uio] or [uio, uio_pci_generic]
or [vfio] module loaded.

Thanks,
Michael
On 12/3/2014 5:44 AM, Malveeka Tewari wrote:
> Hi
>
> I am trying to run the testpmd app as but I get the following errors:
> EAL: VFIO could not be initialized
> EAL: Cannot open /dev/uio0: No such file or directory
> EAL: Error - exiting with code: 1
>   Cause: Requested device 0000:07:00.0 cannot be used
>
> lsmod shows that the uio module is installed.
> Is there anything that's missing?
>
> Thanks!
> Malveeka
>
>
>
> Output on trying to run testpmd
>
> EAL: Detected 16 lcore(s)
> *EAL:   cannot open VFIO container, error 2 (No such file or directory)*
> *EAL: VFIO support could not be initialized*
> EAL: Setting up memory...
> EAL: Ask a virtual area of 0x200000 bytes
> EAL: Virtual area found at 0x7fe66ac00000 (size = 0x200000)
> EAL: Ask a virtual area of 0xffc00000 bytes
> EAL: Virtual area found at 0x7fe56ae00000 (size = 0xffc00000)
> EAL: Ask a virtual area of 0x200000 bytes
> EAL: Virtual area found at 0x7fe56aa00000 (size = 0x200000)
> EAL: Ask a virtual area of 0xfec00000 bytes
> EAL: Virtual area found at 0x7fe46bc00000 (size = 0xfec00000)
> EAL: Ask a virtual area of 0x400000 bytes
> EAL: Virtual area found at 0x7fe46b600000 (size = 0x400000)
> EAL: Ask a virtual area of 0x400000 bytes
> EAL: Virtual area found at 0x7fe46b000000 (size = 0x400000)
> EAL: Ask a virtual area of 0x400000 bytes
> EAL: Virtual area found at 0x7fe46aa00000 (size = 0x400000)
> EAL: Ask a virtual area of 0x400000 bytes
> EAL: Virtual area found at 0x7fe46a400000 (size = 0x400000)
> EAL: Ask a virtual area of 0x400000 bytes
> EAL: Virtual area found at 0x7fe469e00000 (size = 0x400000)
> EAL: Requesting 2048 pages of size 2MB from socket 0
> EAL: Requesting 2048 pages of size 2MB from socket 1
> EAL: TSC frequency is ~2266745 KHz
> EAL: Master core 3 is ready (tid=6cedb800)
> EAL: PCI device 0000:07:00.0 on NUMA socket -1
> EAL:   probe driver: 8086:10fb rte_ixgbe_pmd
>
>
> *EAL: Cannot open /dev/uio0: No such file or directoryEAL: Error - exiting
> with code: 1  Cause: Requested device 0000:07:00.0 cannot be used*
>