Orphaned VMs: Running VMs Uninterrupted While Host Kernel Is Offline For Reboots/Updates

Here's some very intriguing work taking place by a Google engineer... With the hyperscalers and other cloud providers pushing for zero-downtime, a set of experimental patches for "Orphaned VMs" allow for the virtual machines to continue to run while the host kernel is offline for security updates or rebooting with the Live Update Orchestrator. The experimental patches and request for feedback from other Linux kernel stakeholders was sent out this weekend on Orphaned VMs...