add deep debugging option for Legion
add deep debugging option for Legion

yhx189/nautilus,bradylee/nautilus_fs,yhx189/nautilus,haiyang1992/NautilusVirtio,bradylee/nautilus_fs,haiyang1992/NautilusVirtio,bradylee/nautilus_fs,yhx189/nautilus,haiyang1992/NautilusVirtio