[dpdk-dev] [PATCH v4 10/10] doc: update ifc NIC document
maxime.coquelin at redhat.com
Sun Dec 16 10:36:21 CET 2018
On 12/14/18 10:16 PM, Xiao Wang wrote:
> Add the SW assisted VDPA live migration feature into NIC doc.
> Signed-off-by: Xiao Wang <xiao.w.wang at 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.
Ok, so that's documented here.
What about documenting vdpa option too?
> 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.
> 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
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