cr4_init_shadow 37 arch/x86/kernel/head32.c cr4_init_shadow(); cr4_init_shadow 441 arch/x86/kernel/head64.c cr4_init_shadow(); cr4_init_shadow 1408 arch/x86/xen/enlighten_pv.c cr4_init_shadow(); /* 32b kernel does this in i386_start_kernel() */