The addition of uio pci-generic broke use if igb_uio because
the wrong file descriptor is being used.
If I was a hard ass I would recommend uio pci-generic support
be reverted from 2.0 until/unless this fixed.
Failure mode is on startup:
EAL: Error reading interrupts status for fd 0
PANIC in start_port()
rte_eth-dev_start: port=0 err=-5
The problem commit is:
commit 4a499c64959074ba6fa6a5a2b3a2a6aa10627fa1
Author: Danny Zhou <danny.zhou at intel.com>
Date: Fri Feb 20 16:59:15 2015 +0000
eal/linux: enable uio_pci_generic support
Change the EAL PCI code so that it can work with both the
uio_pci_generic in-tree driver, as well as the igb_uio
DPDK-specific driver.
This involves changes to
1) Modify method of retrieving BAR resource mapping information
2) Mapping using resource files in /sys rather than /dev/uio*
2) Setup bus master bit in NIC's PCIe configuration space for
uio_pci_generic.
Signed-off-by: Danny Zhou <danny.zhou at intel.com>
Signed-off-by: Bruce Richardson <bruce.richardson at intel.com>
Acked-by: Declan Doherty <declan.doherty at intel.com>
