Explore device keepalive state techniques for local live migration and VMM fast restart in this 22-minute conference talk by Jason Zeng from Intel. Gain insights into the problem recap, solution spectrum, and the concept of VMM Fast Restart. Delve into the two incremental stages of device keepalive state, including example commands for implementation. Learn about preserving and recreating specific components, maintaining IRQ and DMA alive states, and handling VFIO device ownership and PCI enumeration. Understand the current status and future plans for this technology in the context of KVM virtualization.