Xiao Wang 4bb531e152 net/ifc: support SW assisted VDPA live migration
In SW assisted live migration mode, driver will stop the device and
setup a mediated virtio ring to relay the communication between the
virtio driver and the VDPA device.

This data path intervention will allow SW to help on guest dirty page
logging for live migration.

This SW fallback is event driven relay thread, so when the network
throughput is low, this SW fallback will take little CPU resource, but
when the throughput goes up, the relay thread's CPU usage will goes up
accordingly.

User needs to take all the factors including CPU usage, guest perf
degradation, etc. into consideration when selecting the live migration
support mode.

Signed-off-by: Xiao Wang <xiao.w.wang@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
2018-12-21 16:22:40 +01:00
2018-12-21 00:23:49 +01:00
2018-12-19 11:19:10 +01:00
2018-12-21 16:22:40 +01:00
2018-10-27 00:18:06 +02:00
2018-11-26 20:19:24 +01:00
2016-11-13 15:25:12 +01:00
2018-03-21 23:04:21 +01:00
2018-11-30 16:20:33 +00:00
2018-01-04 22:41:38 +01:00

DPDK is a set of libraries and drivers for fast packet processing.
It supports many processor architectures and both FreeBSD and Linux.

The DPDK uses the Open Source BSD-3-Clause license for the core libraries
and drivers. The kernel components are GPL-2.0 licensed.

Please check the doc directory for release notes,
API documentation, and sample application information.

For questions and usage discussions, subscribe to: users@dpdk.org
Report bugs and issues to the development mailing list: dev@dpdk.org
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