From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jason Wang <jasowang@redhat.com>
Subject: Re: [PATCH net-next 2/2] virtio-net: simplify XDP handling in small
	buffer
Date: Thu, 1 Mar 2018 16:49:24 +0800
Message-ID: <dbbfd899-fb7e-c039-5c9a-0f3b6ce34b78__25967.6465685063$1519894391$gmane$org@redhat.com>
References: <1519874345-10235-1-git-send-email-jasowang@redhat.com>
	<1519874345-10235-3-git-send-email-jasowang@redhat.com>
	<20180301090206.04e13a71@redhat.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Content-Transfer-Encoding: base64
Return-path: <virtualization-bounces@lists.linux-foundation.org>
In-Reply-To: <20180301090206.04e13a71@redhat.com>
Content-Language: en-US
List-Unsubscribe: <https://lists.linuxfoundation.org/mailman/options/virtualization>,
	<mailto:virtualization-request@lists.linux-foundation.org?subject=unsubscribe>
List-Archive: <http://lists.linuxfoundation.org/pipermail/virtualization/>
List-Post: <mailto:virtualization@lists.linux-foundation.org>
List-Help: <mailto:virtualization-request@lists.linux-foundation.org?subject=help>
List-Subscribe: <https://lists.linuxfoundation.org/mailman/listinfo/virtualization>,
	<mailto:virtualization-request@lists.linux-foundation.org?subject=subscribe>
Sender: virtualization-bounces@lists.linux-foundation.org
Errors-To: virtualization-bounces@lists.linux-foundation.org
To: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: netdev@vger.kernel.org, virtualization@lists.linux-foundation.org, john.fastabend@gmail.com, linux-kernel@vger.kernel.org, mst@redhat.com
List-Id: virtualization@lists.linuxfoundation.org
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