Hi Maxime, > -----Original Message----- > From: Maxime Coquelin [mailto:maxime.coque...@redhat.com] > Sent: Sunday, December 16, 2018 1:36 AM > To: Wang, Xiao W <xiao.w.w...@intel.com>; Bie, Tiwei <tiwei....@intel.com> > Cc: alejandro.luc...@netronome.com; dev@dpdk.org; Wang, Zhihong > <zhihong.w...@intel.com>; Ye, Xiaolong <xiaolong...@intel.com> > Subject: Re: [PATCH v4 10/10] doc: update ifc NIC document > > > > 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.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. > > + > > Ok, so that's documented here. > What about documenting vdpa option too?
Yes, will explain all the devargs in this doc. Thanks, Xiao > > > 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 > > ------------- > >
