static inline int kvm_mmu_get_tdp_level(struct kvm_vcpu *vcpu)
{
	/* tdp_root_level is architecture forced level, use it if nonzero */
	if (tdp_root_level)
		return tdp_root_level;

	/* Use 5-level TDP if and only if it's useful/necessary. */
	if (max_tdp_level == 5 && cpuid_maxphyaddr(vcpu) <= 48)
		return 4;

	return max_tdp_level;
}
static inline int kvm_mmu_get_tdp_level(struct kvm_vcpu *vcpu)
{
	 
	if (tdp_root_level)
		return tdp_root_level;

	 
	if (max_tdp_level == 5 && cpuid_maxphyaddr(vcpu) <= 48)
		return 4;

	return max_tdp_level;
}