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From: Murali Krishna <murali.krishna@broadcom.com>
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Date: Mon, 10 Dec 2018 10:58:47 +0530
Message-ID: <f1142b4dc0cac4e5c6176656488c0bb0@mail.gmail.com>
To: Ramzah Rehman <ramzahrehman@gmail.com>
Cc: users@dpdk.org
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Subject: Re: [dpdk-users] Cannot Bind eth0 to vfio-pci Driver
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X-List-Received-Date: Mon, 10 Dec 2018 05:28:50 -0000

I encountered same issue. I was able to bind devices to vfio-pci after
enabling VT-d in system bios. Check if this helps.

Regards,
Murali

-----Original Message-----
From: users [mailto:users-bounces@dpdk.org] On Behalf Of Ramzah Rehman
Sent: Monday, December 10, 2018 9:19 AM
To: users@dpdk.org
Subject: [dpdk-users] Cannot Bind eth0 to vfio-pci Driver

I am trying to bind an interface eth0 to vfio driver. I have made sure
iommu is enabled in grub and kernel. I have loaded the module vfio-pci. Ran
following commands

#modprobe vfio-pci
#chmod a+x /dev/vfio
#chmod 0666 /dev/vfio/*
#export DPDK_DIR=/usr/src/dpdk-stable-17.11.4
#sudo $DPDK_DIR/usertools/dpdk-devbind.py --bind=vfio-pci 02:01.0

I got following error:

Error: bind failed for 0000:02:01.0 - Cannot bind to driver vfio-pci

I checked the error in dmesg:

Got :

[ 1815.793823] vfio-pci: probe of 0000:02:01.0 failed with error -22

let me know the reason.

Best Regards,
Ramzah Rehman