Could you please send out the steps for us to reproduce it? I guess you have applied v6 interrupt patches to perform interrupt related tests, right?
We cannot reproduce it now. The support to in_kernel uio_pci_generic avoids using igb_uio this DPDK specific kernel module, so it will be much easier for any Linux distribution to package DPDK. > -----Original Message----- > From: Stephen Hemminger [mailto:stephen at networkplumber.org] > Sent: Wednesday, April 15, 2015 9:06 AM > To: Zhou, Danny; Richardson, Bruce; Doherty, Declan > Cc: dev at dpdk.org > Subject: UIO pci-generic support broke igb_uio > > 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>