[dpdk-dev] [PATCH] vfio: make container open error non-fatal
Richardson, Bruce
bruce.richardson at intel.com
Tue Jun 17 18:53:19 CEST 2014
> -----Original Message-----
> From: Richardson, Bruce
> Sent: Monday, June 16, 2014 3:29 PM
> To: dev at dpdk.org
> Cc: Richardson, Bruce
> Subject: [PATCH] vfio: make container open error non-fatal
>
> When setting up an app to run using the uio driver, errors caused by
> VFIO failures should not abruptly cause the app to fail.
>
> Example: on a board with 8 ports bound to igb_uio module, and no VFIO
> configuration, a testpmd run currently fails with:
>
> EAL: cannot open VFIO container!
> EAL: 0000:04:00.0 cannot open VFIO container!
> EAL: Error - exiting with code: 1
> Cause: Requested device 0000:04:00.0 cannot be used
>
> With this patch applied, the problem with VFIO is ignored and testpmd
> successfully starts up - with ignored errors with vfio - as below:
>
> EAL: PCI device 0000:04:00.0 on NUMA socket 0
> EAL: probe driver: 8086:1521 rte_igb_pmd
> EAL: unknown IOMMU driver!
> EAL: 0000:04:00.0 cannot open VFIO container!
> EAL: 0000:04:00.0 not managed by UIO driver, skipping
> <...scan results for other ports skipped...>
> EAL: PCI device 0000:8e:00.0 on NUMA socket 1
> EAL: probe driver: 8086:154a rte_ixgbe_pmd
> EAL: unknown IOMMU driver!
> EAL: 0000:8e:00.0 cannot open VFIO container!
> EAL: PCI memory mapped at 0x7ff4ff5fa000
> EAL: PCI memory mapped at 0x7ff4ff5f6000
> EAL: PCI device 0000:8e:00.1 on NUMA socket 1
> EAL: probe driver: 8086:154a rte_ixgbe_pmd
> EAL: unknown IOMMU driver!
> EAL: 0000:8e:00.1 cannot open VFIO container!
> EAL: PCI memory mapped at 0x7ff4ff4f6000
> EAL: PCI memory mapped at 0x7ff4ff4f2000
> Interactive-mode selected
> Configuring Port 0 (socket 0)
> <...other 7 ports ...>
> Checking link statuses...
> Port 0 Link Up - speed 10000 Mbps - full-duplex
> Port 1 Link Down
> Port 2 Link Up - speed 10000 Mbps - full-duplex
> Port 3 Link Down
> Port 4 Link Up - speed 10000 Mbps - full-duplex
> Port 5 Link Down
> Port 6 Link Up - speed 10000 Mbps - full-duplex
> Port 7 Link Down
> Done
> testpmd>
>
> This issue is introduced by the VFIO patch set addition, specifically
> commit ff0b67d1.
>
> Signed-off-by: Bruce Richardson <bruce.richardson at intel.com>
> ---
Self-NAK. Anatoly's patch is a better fix.
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