From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yong Wang Subject: [PATCH] doc: fix a mistake in prog guide Date: Mon, 19 Dec 2016 07:14:38 -0500 Message-ID: <1482149678-18363-1-git-send-email-wang.yong19@zte.com.cn> Cc: dev@dpdk.org, Yong Wang To: john.mcnamara@intel.com Return-path: Received: from mx5.zte.com.cn (mx5.zte.com.cn [63.217.80.70]) by dpdk.org (Postfix) with ESMTP id E8B1EF925 for ; Mon, 19 Dec 2016 12:11:53 +0100 (CET) List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Signed-off-by: Yong Wang --- doc/guides/prog_guide/vhost_lib.rst | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/doc/guides/prog_guide/vhost_lib.rst b/doc/guides/prog_guide/vhost_lib.rst index 4f997d4..f0862e6 100644 --- a/doc/guides/prog_guide/vhost_lib.rst +++ b/doc/guides/prog_guide/vhost_lib.rst @@ -95,7 +95,7 @@ The following is an overview of the Vhost API functions: * for VM2NIC case, the ``nb_tx_desc`` has to be small enough: <= 64 if virtio indirect feature is not enabled and <= 128 if it is enabled. - The is because when dequeue zero copy is enabled, guest Tx used vring will + This is because when dequeue zero copy is enabled, guest Tx used vring will be updated only when corresponding mbuf is freed. Thus, the nb_tx_desc has to be small enough so that the PMD driver will run out of available Tx descriptors and free mbufs timely. Otherwise, guest Tx vring would be -- 1.8.3.1