Signed-off-by: Xiao Wang <[email protected]>
---
v2:
* Add release note.
---
doc/guides/nics/ifc.rst | 7 +++++++
doc/guides/rel_notes/release_19_02.rst | 5 +++++
2 files changed, 12 insertions(+)
diff --git a/doc/guides/nics/ifc.rst b/doc/guides/nics/ifc.rst
index 48f9adf1d..858f35f74 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 live migration.
Prerequisites
diff --git a/doc/guides/rel_notes/release_19_02.rst
b/doc/guides/rel_notes/release_19_02.rst
index a94fa86a7..ea3909631 100644
--- a/doc/guides/rel_notes/release_19_02.rst
+++ b/doc/guides/rel_notes/release_19_02.rst
@@ -54,6 +54,11 @@ New Features
Also, make sure to start the actual text at the margin.
=========================================================
+* **Add 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
