[dpdk-dev] I have a problem in setting up DPDK 2.1.0 in Fedora OS release 20 (Heisenbug). I cannot r

[Mcnamara, John]

> -----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