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Learn about performance optimization techniques for the Kexec Handover (KHO) framework in this 16-minute conference talk from the Linux Plumbers Conference. Discover how the initial KHO design's stateful, linear serialization step creates scalability bottlenecks on large-memory hosts and explore solutions for making KHO stateless by modifying data structures that manage preserved physical pages. Examine the challenges of the current framework and understand the technical approaches being developed to address performance limitations. Participate in discussions about future optimization strategies, including potential designs for making KHO compatible with deferred struct page initialization and explore various multi-threading strategies for the preserved page loop during new kernel boot processes. Gain insights into low-level kernel development, memory management optimization, and system performance engineering from an expert perspective on improving critical system handover mechanisms.
