Add the SW assisted VDPA live migration feature into NIC doc. Signed-off-by: Xiao Wang <xiao.w.w...@intel.com> --- 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
