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From: Jan Blunck <jblunck@infradead.org>
Date: Mon, 27 Mar 2017 09:46:25 +0200
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To: Thomas Monjalon <thomas.monjalon@6wind.com>
Cc: dev <dev@dpdk.org>, David Marchand <david.marchand@6wind.com>, 
 Shreyansh Jain <shreyansh.jain@nxp.com>, Ferruh Yigit <ferruh.yigit@intel.com>
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Subject: Re: [dpdk-dev] [PATCH v4 03/10] eal: move virtual device probing
 into a bus
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On Mon, Mar 13, 2017 at 6:44 PM, Thomas Monjalon
<thomas.monjalon@6wind.com> wrote:
> 2017-03-06 11:56, Jan Blunck:
>> +static int
>> +vdev_scan(void)
>> +{
>> +     /* for virtual devices we don't need to scan anything */
>> +     return 0;
>> +}
>
> The vdev_scan could save the devargs.
> The vdev args are the equivalent of PCI BDF.

In a later patch ("eal: make virtual bus use rte_vdev_device") the
vdev_scan() is creating the list of devices based on the devargs.