From patchwork Wed Nov 28 09:46:07 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiao Wang X-Patchwork-Id: 48379 X-Patchwork-Delegate: maxime.coquelin@redhat.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id D72AC1B49D; Wed, 28 Nov 2018 10:56:09 +0100 (CET) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by dpdk.org (Postfix) with ESMTP id 835781B495 for ; Wed, 28 Nov 2018 10:56:06 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Nov 2018 01:56:06 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,290,1539673200"; d="scan'208";a="112891256" Received: from dpdk-xiao-1.sh.intel.com ([10.67.111.106]) by orsmga001.jf.intel.com with ESMTP; 28 Nov 2018 01:56:04 -0800 From: Xiao Wang To: tiwei.bie@intel.com, maxime.coquelin@redhat.com Cc: dev@dpdk.org, zhihong.wang@intel.com, xiaolong.ye@intel.com, Xiao Wang Date: Wed, 28 Nov 2018 17:46:07 +0800 Message-Id: <20181128094607.106173-10-xiao.w.wang@intel.com> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20181128094607.106173-1-xiao.w.wang@intel.com> References: <20181128094607.106173-1-xiao.w.wang@intel.com> Subject: [dpdk-dev] [PATCH 9/9] doc: update ifc NIC document X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list 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: Xiao Wang --- doc/guides/nics/ifc.rst | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/doc/guides/nics/ifc.rst b/doc/guides/nics/ifc.rst index 48f9adf1d..a16f2982f 100644 --- a/doc/guides/nics/ifc.rst +++ b/doc/guides/nics/ifc.rst @@ -39,6 +39,12 @@ the driver probe a new container is created for this device, with this container vDPA driver can program DMA remapping table with the VM's memory region information. +The device argument "swlm=1" will configure the driver into SW assisted live +migration mode. In this mode, the driver will set up a SW relay thread when LM +happens, this thread will help device to log dirty pages. Thus this mode does +not require HW to implement a dirty page logging function block, but will +consume some percentage of CPU resource depending on the network throughput. + Key IFCVF vDPA driver ops ~~~~~~~~~~~~~~~~~~~~~~~~~ @@ -70,6 +76,7 @@ Features Features of the IFCVF driver are: - Compatibility with virtio 0.95 and 1.0. +- SW assisted vDPA for live migration. Prerequisites