On 1/16/2018 9:41 PM, Xiao Wang wrote: > When live migration is done, for the backup VM, either the virtio > frontend or the vhost backend needs to send out gratuitous RARP packet > to announce its new network location. > > This patch enables VIRTIO_NET_F_GUEST_ANNOUNCE feature to support live > migration scenario where the vhost backend doesn't have the ability to > generate RARP packet. > > Brief introduction of the work flow: > 1. QEMU finishes live migration, pokes the backup VM with an interrupt. > 2. Virtio interrupt handler reads out the interrupt status value, and > realizes it needs to send out RARP packet to announce its location. > 3. Pause device to stop worker thread touching the queues. > 4. Inject a RARP packet into a Tx Queue. > 5. Ack the interrupt via control queue. > 6. Resume device to continue packet processing. > > Signed-off-by: Xiao Wang <xiao.w.w...@intel.com> > Reviewed-by: Maxime Coquelin <maxime.coque...@redhat.com>
Hi Yuanhan, This commit breaks the build! As far as I understand you send a fix but merged into other patch, which leaves this commit still broken. What do you think sending a fix that can be mergable to this one, so I can squash it on next-net? Thanks, ferruh
