Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751189AbdFBJfC (ORCPT ); Fri, 2 Jun 2017 05:35:02 -0400 Received: from mail-lf0-f47.google.com ([209.85.215.47]:36048 "EHLO mail-lf0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750813AbdFBJfA (ORCPT ); Fri, 2 Jun 2017 05:35:00 -0400 Subject: Re: [PATCH] virtio_net: lower limit on buffer size To: "Michael S. Tsirkin" , linux-kernel@vger.kernel.org References: <1496361148-4603-1-git-send-email-mst@redhat.com> Cc: Mikulas Patocka , "J. Bruce Fields" , Jason Wang , virtualization@lists.linux-foundation.org, netdev@vger.kernel.org From: Sergei Shtylyov Message-ID: <3dd90d56-7110-bb9e-0b7f-4c8a8003a57f@cogentembedded.com> Date: Fri, 2 Jun 2017 12:34:57 +0300 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: <1496361148-4603-1-git-send-email-mst@redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 760 Lines: 24 Hello! On 6/2/2017 2:56 AM, Michael S. Tsirkin wrote: > commit d85b758f72b0 "virtio_net: fix support for small rings" Commit d85b758f72b0 ("virtio_net: fix support for small rings") > was supposed to increase the buffer size for small rings > but had an unintentional side effect of decreasing > it for large rings. This seems to break some setups - > it's not yet clear why, but increasing buffer size > back to what it was before helps. > > Fixes: d85b758f72b0 "virtio_net: fix support for small rings" Fixes: d85b758f72b0 ("virtio_net: fix support for small rings") > Reported-by: Mikulas Patocka > Reported-by: "J. Bruce Fields" > Signed-off-by: Michael S. Tsirkin [...] MBR, Sergei