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Learn about implementing parallel CPU onlining for arm64 architecture in this KVM Forum conference talk by Will Deacon. Explore the technical details of CONFIG_HOTPLUG_PARALLEL, a kernel feature originally designed to accelerate CPU booting and microcode updates on x86 systems. Discover how the core logic can be adapted for arm64 architecture and examine whether parallel onlining can improve virtual CPU performance under KVM virtualization. Gain insights into the low-level implementation challenges and performance implications of enabling parallel vCPU onlining in ARM-based virtualized environments.
