Very cool. Seems like this could also be great for an integration test runner when the test environment requires a lot of setup. I thought this might use some

Very cool. Seems like this could also be great for an integration test runner when the test environment requires a lot of setup. I thought this might use some of the underlying page tracking support for live network migration [0] that nearly every hypervisor has now, but it doesn't seem like they needed it! [0] https://en.wikipedia.org/wiki/Live_migration https://en.wikipedia.org/wiki/Live_migration