start_kernel 흐름

#start_kernel 흐름

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##1. lockdep_init()

##2. smp_setup_processor_id()

##3. debug_objects_early_init()

##4. boot_init_stack_canary()

##5. cgroup_init_early()

##6. local_irq_disable() early_boot_irqs_disabled = true

##7. boot_cpu_init()

##8. page_address_init()

##9. setup_arch(&command_line)