From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Monjalon <thomas@monjalon.net>
Subject: Re: [PATCH v1] doc/eth: update document for functional
	limitation
Date: Thu, 24 May 2018 19:06:24 +0200
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Cc: dev@dpdk.org, qi.z.zhang@intel.com, marko.kovacevic@intel.com,
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To: Vipin Varghese <vipin.varghese@intel.com>
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23/05/2018 12:05, Vipin Varghese:
> --- a/lib/librte_ethdev/rte_ethdev.h
> +++ b/lib/librte_ethdev/rte_ethdev.h
> @@ -1479,6 +1479,9 @@ int rte_eth_dev_attach(const char *devargs, uint16_t *port_id);
>   * This function must be called when the device is in the
>   * closed state.
>   *
> + * Note:
> + * - Currently supported for primary process only.

I think it should be possible to attach a device in secondary process.
If it is a recent limitation, it should be in "known issues" of the release notes.