Subject: RE: [PATCH 3/6] net: thunderx: Increase transmit queue length

From: Pavel Fedin <[email-masked]>
Date: Wed, 02 Dec 2015 11:09:15 +0300

Hello!

> > swiotlb: coherent allocation failed for device 0002:01:08.4 size=4198400
> > CPU: 2 PID: 3655 Comm: NetworkManager Tainted: G        W  O    4.2.6+ #201
> > Hardware name: Cavium ThunderX CN88XX
> 
> Are you sure 4.2.6 kernel is suitable for backporting this patch aimed
> for linux-4.5 ?

 Why not? It's just a networking driver. And, i also have the same problem on 4.3 running as KVM guest with VFIO.

Kind regards,
Pavel Fedin
Expert Engineer
Samsung Electronics Research center Russia