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From: "Burakov, Anatoly" <anatoly.burakov@intel.com>
To: Sarosh Arif <sarosh.arif@emumba.com>,
	Bruce Richardson <bruce.richardson@intel.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] unable to bind to vfio-pci
Date: Thu, 17 Sep 2020 10:35:14 +0100
Message-ID: <9009b751-c6fa-7195-368b-ed7a1d2c91f5@intel.com> (raw)
In-Reply-To: <CABoZmYMcwnHdH6F4Wg+Jt=yucko=Hm1Aw2dx5DDq9-XL_uNx5w@mail.gmail.com>

On 17-Sep-20 10:21 AM, Sarosh Arif wrote:
> On Thu, Sep 17, 2020 at 2:17 PM Bruce Richardson
> <bruce.richardson@intel.com> wrote:
>>
>> On Thu, Sep 17, 2020 at 11:52:58AM +0500, Sarosh Arif wrote:
>>> I have been trying to bind to vfio-pci using usertools/dpdk-devbind.py
>>> but am unable to do so. The reason behind this is that I am unable to
>>> write in /sys/bus/pci/drivers/vfio-pci/bind. Upon searching solutions
>>> I tried a couple of things such as setting iommu=pt and intel_iommu=on
>>> and ensured vt-d is enabled.
>>> Along with this I have made sure that the vfio-pci module is correctly
>>> loaded. I have also tried
>>>
>>> chmod 666 /sys/bus/pci/drivers/vfio-pci/bind
>>>
>>> So that I have permissions to write in this file.
>>>
>>> The error I get when I use usertools/dpdk-devbind.py to bind is this:
>>> Error: bind failed for 0000:b7:00.1 - Cannot bind to driver vfio-pci
>>>
>>> The details of 0000:b7:00.1 are as follows:
>>> Ethernet Connection X722 for 10GBASE-T 37d2' if=eno6 drv=i40e
>>>
>>> I have also unbinded The pci bridge to which 0000:b7:00.1 was connected.
>>>
>>> What more can be done to resolve this?
>>>
>> Since you describe changing permissions on the "bind" file, are you trying
>> to run dpdk-devbind.py as a non-root user? Does it work as root?
> I am running it as a root user. It does not work as a root user.
> 

Does "dmesg | tail" say anything of interest?

-- 
Thanks,
Anatoly

  reply	other threads:[~2020-09-17  9:35 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-17  6:52 Sarosh Arif
2020-09-17  7:31 ` Dybkowski, AdamX
2020-09-17  8:39   ` Sarosh Arif
2020-09-17  9:17 ` Bruce Richardson
2020-09-17  9:21   ` Sarosh Arif
2020-09-17  9:35     ` Burakov, Anatoly [this message]
2020-09-21 11:54       ` Sarosh Arif
2020-09-21 11:58         ` Burakov, Anatoly
2020-09-17 10:22     ` Bruce Richardson
2020-09-17 11:49       ` Burakov, Anatoly
2020-09-21 11:10         ` Sarosh Arif
2020-09-21 11:36           ` Burakov, Anatoly

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