linux-kernel - RE: [PATCH v2 1/2] net: ethernet: i40e: fix build error

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Date:   Thu, 6 Sep 2018 18:15:18 +0000
From:   "Wyborny, Carolyn" <carolyn.wyborny@...el.com>
To:     Andrew Lunn <andrew@...n.ch>,
        "Keller, Jacob E" <jacob.e.keller@...el.com>
CC:     "Wang, Dongsheng" <dongsheng.wang@...-semitech.com>,
        "Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>,
        "sergei.shtylyov@...entembedded.com" 
        <sergei.shtylyov@...entembedded.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v2 1/2] net: ethernet: i40e: fix build error

> -----Original Message-----
> From: netdev-owner@...r.kernel.org [mailto:netdev-
> owner@...r.kernel.org] On Behalf Of Andrew Lunn
> Sent: Thursday, September 06, 2018 11:03 AM
> To: Keller, Jacob E <jacob.e.keller@...el.com>
> Cc: Wang, Dongsheng <dongsheng.wang@...-semitech.com>; Kirsher,
> Jeffrey T <jeffrey.t.kirsher@...el.com>;
> sergei.shtylyov@...entembedded.com; davem@...emloft.net; intel-
> wired-lan@...ts.osuosl.org; netdev@...r.kernel.org; linux-
> kernel@...r.kernel.org
> Subject: Re: [PATCH v2 1/2] net: ethernet: i40e: fix build error
> 
[..]
> You have a few options here.
> 
> 1) A library module, containing shared code. Use EXPORT_SYMBOL_GPL()
> in the library module, and the kernel runtime linker will link the
> calls into the library. Also, modprobe will ensure the library module
> is loaded first, before the driver module.
> 
> 2) Build time sharing of code. Place the shared code into a .o file,
> and link it to both modules.
> 
> There is nothing particularly difficult here, this all done lots of
> times within the kernel. Just look around and see how others do it.

Thanks Andrew,

Yes, I agree and we do have a team working on doing this.

Carolyn

Carolyn Wyborny 
Linux Development 
Networking Division 
Intel Corporation