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Date: Wed, 12 Nov 2014 14:12:12 +0000
From: Bruce Richardson <bruce.richardson@intel.com>
To: Manoj Viswanath <manoj.viswanath@gmail.com>
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Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] Ports not detected by IGB_UIO in DPDK 1.7.1 in
 QEMU_KVM environment
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On Tue, Nov 11, 2014 at 07:18:32PM +0530, Manoj Viswanath wrote:
> Bruce,
> 
> Thanks for the input.
> Sure, will figure out the offending file behind this error and update this
> thread.
> 
> Meanwhile, wanted to share one more observation regarding this issue:
> The "file descriptor error" is NOT SEEN with DPDK 1.7.0 (dpdk-1.7.0.tar.gz
> <http://dpdk.org/browse/dpdk/snapshot/dpdk-1.7.0.tar.gz>) when explicitly
> binding NICs to IGB_UIO using the .py script.
> 
> The issue is only seen when using DPDK 1.7.1 ( dpdk-1.7.1.tar.gz
> <http://dpdk.org/browse/dpdk/snapshot/dpdk-1.7.1.tar.gz>). I hope the
> version i am using is the last official tag in the 1.7.x tree.
> 

Given that it's narrowed down to a change between 1.7.0 and 1.7.1 would it also
be possible for you to use git bisect to track down the commit that introduces
the error?

/Bruce