From mboxrd@z Thu Jan 1 00:00:00 1970 From: Xiao Wang Subject: [PATCH v4 10/10] doc: update ifc NIC document Date: Sat, 15 Dec 2018 05:16:12 +0800 Message-ID: <20181214211612.167681-11-xiao.w.wang@intel.com> References: <20181213100910.13087-2-xiao.w.wang@intel.com> <20181214211612.167681-1-xiao.w.wang@intel.com> Cc: alejandro.lucero@netronome.com, dev@dpdk.org, zhihong.wang@intel.com, xiaolong.ye@intel.com, Xiao Wang To: tiwei.bie@intel.com, maxime.coquelin@redhat.com 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) In-Reply-To: <20181214211612.167681-1-xiao.w.wang@intel.com> List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" 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