From: Ferruh Yigit <ferruh.yigit@intel.com>
To: Brandon Lo <blo@iol.unh.edu>
Cc: ci@dpdk.org, "Chen, Zhaoyan" <zhaoyan.chen@intel.com>,
"Tu, Lijuan" <lijuan.tu@intel.com>,
"Xu, Qian Q" <qian.q.xu@intel.com>
Subject: Re: [dpdk-ci] Intel VFIO-PCI Driver Error -22
Date: Fri, 9 Oct 2020 12:14:24 +0100 [thread overview]
Message-ID: <8c696743-5640-9ad9-aba4-916ca8858f64@intel.com> (raw)
In-Reply-To: <CAOeXdvbVh8RjYrQNE26LAPS9YtgkV49Jyo8tAo_ivW3TGg=uaw@mail.gmail.com>
On 10/8/2020 7:30 PM, Brandon Lo wrote:
> I may have sent that thanks email too early.
>
> Vt-d is enabled now for both machines, but the same error -22 is still
> occurring in dmesg.
>
> `/sys/kernel/iommu_groups/` is empty.
> Perhaps the kernel parameters are not being set properly?
>
if iommu enabled '/sys/kernel/iommu_groups/' should have folders in.
What did you enable in the bios, it mostly doesn't come with name 'Vt-d' so may
be hard to find it?
The kernel parameters "intel_iommu=on iommu=pt" looks good.
> Thanks,
> Brandon
>
> On Thu, Oct 8, 2020 at 2:19 PM Brandon Lo <blo@iol.unh.edu> wrote:
>>
>> Thanks, I was not aware that the system had Vt-d disabled.
>>
>> On Thu, Oct 8, 2020 at 1:46 PM Ferruh Yigit <ferruh.yigit@intel.com> wrote:
>>>
>>> On 10/8/2020 5:51 PM, Brandon Lo wrote:
>>>> Hi everyone,
>>>>
>>>> I am having issues trying to bind both Intel Niantic and Fortville
>>>> NICs over to VFIO-PCI.
>>>> The machines are running Ubuntu 18.04 with kernel 4.15.0-55.
>>>> The dpdk-devbind.py tool outputs "Cannot bind to driver vfio-pci" and
>>>> "Cannot open /sys/bus/pci/drivers//unbind".
>>>>
>>>> The dmesg output contains "vfio-pci: probe of [PCI Address] failed
>>>> with error -22" whenever I try to bind it.
>>>> Both machines have "intel_iommu=on iommu=pt" in their kernel parameters.
>>>>
>>>
>>> Is 'Vt-d' enabled in the bios?
>>>
>>> What do you see under '/sys/kernel/iommu_groups/' folder?
>>
>>
>>
>> --
>>
>> Brandon Lo
>>
>> UNH InterOperability Laboratory
>>
>> 21 Madbury Rd, Suite 100, Durham, NH 03824
>>
>> blo@iol.unh.edu
>>
>> www.iol.unh.edu
>
>
>
prev parent reply other threads:[~2020-10-09 11:14 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-08 16:51 Brandon Lo
2020-10-08 17:46 ` Ferruh Yigit
2020-10-08 18:19 ` Brandon Lo
2020-10-08 18:30 ` Brandon Lo
2020-10-09 9:58 ` Juraj Linkeš
2020-10-09 11:14 ` Ferruh Yigit [this message]
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