[dpdk-dev] I have a problem in setting up DPDK 2.1.0 in Fedora OS release 20 (Heisenbug). I cannot r
Mcnamara, John
john.mcnamara at intel.com
Thu Oct 15 10:10:48 CEST 2015
> -----Original Message-----
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of ???
> Sent: Thursday, October 15, 2015 2:02 AM
> To: De Lara Guarch, Pablo; dev at dpdk.org
> Subject: Re: [dpdk-dev] I have a problem in setting up DPDK 2.1.0 in
> Fedora OS release 20 (Heisenbug). I cannot r
>
> I checked what you mentioned.
>
> * Fedora Linux kernel version is as follows.
>
> $ uname -r (print kernel name)
> 3.17.7-200.fc20.x86_64
Hi,
This may be a known issue. See:
http://dpdk.org/doc/guides/rel_notes/known_issues.html#devices-bound-to-igb-uio-with-vt-d-enabled-do-not-work-on-linux-kernel-3-15-3-17
"Devices bound to igb_uio with VT-d enabled do not work on Linux kernel 3.15-3.17
Description:
When VT-d is enabled (iommu=pt intel_iommu=on), devices are 1:1 mapped. In the Linux kernel unbinding devices from drivers removes that mapping which result in IOMMU errors. Introduced in Linux kernel 3.15 commit, solved in Linux kernel 3.18 commit."
John
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