Here is Part 2.
Postcopy live migration is a promising alternative of virtual machine (VM) migration, which transfers memory pages after switching the execution host of a VM. It allows a shorter and more deterministic migration time than precopy migration. In the Yabusame project, we developed postcopy migration for Qemu/KVM.
The following journal article presents a performance improvement technique of postcopy migration, extending the para-virtualized page fault mechanism of a virtual machine monitor.
Postcopy Live Migration with Guest-cooperative Page Faults,
Takahiro Hirofuchi, Isaku Yamahata, Satoshi Itoh,
IEICE Transactions on Information and Systems, pp.2159-2167, Vol.E98-D, No.12, IEICE, Dec 2015
PDF (Full Text)
Finally, the recent Qemu/KVM supports postcopy live migration. Congrats!