From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by dpdk.org (Postfix) with ESMTP id 9E94D1B9E9 for ; Fri, 14 Dec 2018 22:26:50 +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 fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Dec 2018 13:26:49 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,354,1539673200"; d="scan'208";a="118922700" Received: from dpdk-xiao-1.sh.intel.com ([10.67.111.145]) by orsmga001.jf.intel.com with ESMTP; 14 Dec 2018 13:26:48 -0800 From: Xiao Wang To: tiwei.bie@intel.com, maxime.coquelin@redhat.com Cc: alejandro.lucero@netronome.com, dev@dpdk.org, zhihong.wang@intel.com, xiaolong.ye@intel.com, Xiao Wang Date: Sat, 15 Dec 2018 05:16:12 +0800 Message-Id: <20181214211612.167681-11-xiao.w.wang@intel.com> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20181214211612.167681-1-xiao.w.wang@intel.com> References: <20181213100910.13087-2-xiao.w.wang@intel.com> <20181214211612.167681-1-xiao.w.wang@intel.com> Subject: [dpdk-dev] [PATCH v4 10/10] 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: , X-List-Received-Date: Fri, 14 Dec 2018 21:26:51 -0000 Add the SW assisted VDPA live migration feature into NIC doc. Signed-off-by: Xiao Wang --- doc/guides/nics/ifc.rst | 8 ++++++++ doc/guides/rel_notes/release_19_02.rst | 6 ++++++ 2 files changed, 14 insertions(+) diff --git a/doc/guides/nics/ifc.rst b/doc/guides/nics/ifc.rst index 48f9adf1d..eb55d329a 100644 --- a/doc/guides/nics/ifc.rst +++ b/doc/guides/nics/ifc.rst @@ -39,6 +39,13 @@ 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. +If no "swlm=1" specified, driver will rely on device's logging capability. + Key IFCVF vDPA driver ops ~~~~~~~~~~~~~~~~~~~~~~~~~ @@ -70,6 +77,7 @@ Features Features of the IFCVF driver are: - Compatibility with virtio 0.95 and 1.0. +- SW assisted vDPA live migration. Prerequisites diff --git a/doc/guides/rel_notes/release_19_02.rst b/doc/guides/rel_notes/release_19_02.rst index e86ef9511..ced6af8f0 100644 --- a/doc/guides/rel_notes/release_19_02.rst +++ b/doc/guides/rel_notes/release_19_02.rst @@ -60,6 +60,12 @@ New Features * Added the handler to get firmware version string. * Added support for multicast filtering. +* **Added support for SW-assisted VDPA live migration.** + + This SW-assisted VDPA live migration facility helps VDPA devices without + logging capability to perform live migration, a mediate SW relay can help + devices to track dirty pages caused by DMA. IFC driver has enabled this + SW-assisted live migration mode. Removed Items ------------- -- 2.15.1