netdev - Re: [PATCH net-next] net/mlx4_core: Fix backward compatibility on VFs

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Date:	Fri, 18 Mar 2016 23:11:06 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	eli@...lanox.com
Cc:	linux-rdma@...r.kernel.org, netdev@...r.kernel.org, aik@...abs.ru
Subject: Re: [PATCH net-next] net/mlx4_core: Fix backward compatibility on
 VFs

From: Eli Cohen <eli@...lanox.com>
Date: Thu, 17 Mar 2016 18:49:42 +0200

> Commit 85743f1eb345 ("net/mlx4_core: Set UAR page size to 4KB regardless
> of system page size") introduced dependency where old VF drivers without
> this fix fail to load if the PF driver runs with this commit.
> 
> To resolve this add a module parameter which disables that functionality
> by default.  If both the PF and VFs are running with a driver with that
> commit the administrator may set the module param to true.
> 
> The module parameter is called enable_4k_uar.
> 
> Fixes: 85743f1eb345 ('net/mlx4_core: Set UAR page size to 4KB ...')
> Signed-off-by: Eli Cohen <eli@...lanox.com>

Applied.