Testpmd returns error.

[Tetsuya Mukawa <mukawa-AlSX/UN32fvPDbFq/vQRIQ@public.gmane.org>]

Hi,

In my environment, testpmd in latest master branch returns error like below.

$ sudo ./tools/dpdk_nic_bind.py -b igb_uio 0000:02:00.0
$ sudo ./x86_64-native-linuxapp-gcc/app/testpmd -c f -n 1 -- -i
EAL: Detected lcore 0 as core 0 on socket 0
EAL: Detected lcore 1 as core 1 on socket 0
EAL: Detected lcore 2 as core 2 on socket 0
EAL: Detected lcore 3 as core 3 on socket 0
EAL: Detected lcore 4 as core 4 on socket 0
EAL: Detected lcore 5 as core 5 on socket 0
EAL: Detected lcore 6 as core 6 on socket 0
EAL: Detected lcore 7 as core 7 on socket 0
EAL: Support maximum 128 logical core(s) by configuration.
EAL: Detected 8 lcore(s)
EAL: VFIO modules not all loaded, skip VFIO support...
EAL: Setting up memory...
EAL: Ask a virtual area of 0x280000000 bytes
EAL: Virtual area found at 0x7ffd40000000 (size = 0x280000000)
EAL: Requesting 10 pages of size 1024MB from socket 0
EAL: TSC frequency is ~3991450 KHz
EAL: Master core 0 is ready (tid=f7fd6840)
PMD: ENICPMD trace: rte_enic_pmd_init
EAL: Core 3 is ready (tid=f58e0700)
EAL: Core 2 is ready (tid=f60e1700)
EAL: Core 1 is ready (tid=f68e2700)
EAL: PCI device 0000:02:00.0 on NUMA socket -1
EAL:   probe driver: 8086:10b9 rte_em_pmd
EAL:   PCI memory mapped at 0x7fffc0000000
EAL: pci_map_resource(): cannot mmap(23, 0x7fffc0020000, 0x20000,
0x1000): Invalid argument (0xffffffffffffffff)
EAL: Error - exiting with code: 1
  Cause: Requested device 0000:02:00.0 cannot be used


I've run git-bisect, and it seems following commit cause this error.

commit 4a499c64959074ba6fa6a5a2b3a2a6aa10627fa1
Author: Danny Zhou <danny.zhou-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Date:   Fri Feb 20 16:59:15 2015 +0000

    eal/linux: enable uio_pci_generic support

Someone, could you please check it?

Thanks,
Tetsuya