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Learn about HyperTurtle, a groundbreaking approach to accelerating nested virtualization performance in this 16-minute conference presentation from USENIX ATC '25. Discover how researchers from Technion and Huawei developed a general solution to reduce the costly world switches between virtualization layers that cause significant performance overheads in nested virtualization environments. Explore the innovative use of eBPF programs to offload critical path execution from virtualized hypervisors to bare-metal hypervisors, maintaining strong isolation while improving performance. Examine practical applications across memory management, networking, and application profiling, with demonstrated results including 5× faster EPT fault handling and up to 27% faster Kata container boot times. Understand how this Best Paper award-winning research achieves substantial performance improvements without requiring intrusive changes to existing virtualization infrastructure, making it a practical solution for real-world deployment scenarios.
