linux kernel x86 启动主线函数，kernelx86

linux kernel x86 启动主线函数，kernelx86

arch/x86/boot/header.S   -->   _start   -->   calll   main arch/x86/boot/main.c   -->   main -- >   go_to_protected_mode arch/x86/boot/pm.c   -->   go_to_protected_mode   -->   protected_mode_jump arch/x86/boot/pmjump.S   -->   GLOBAL(protected_mode_jump)   -->   jmpl    *%eax arch/x86/boot/compressed/head_64.S   -->   ENTRY(startup_32)   -->   ENTRY(startup_64)   -->    jmp *%rax arch/x86/kernel/head_64.S   -->   startup_64   -->   ENTRY(secondary_startup_64)   -->   lretq (%rax) arch/x86/kernel/head64.c   --> x86_64_start_kernel   -->   start_kernel init/main.c   -->   start_kernel   -->   rest_init