tdp_mmu_iter_set_spte
tdp_mmu_iter_set_spte(kvm, &iter, SHADOW_NONPRESENT_VALUE);
tdp_mmu_iter_set_spte(kvm, iter, spte);
tdp_mmu_iter_set_spte(kvm, &iter, new_spte);
tdp_mmu_iter_set_spte(kvm, &iter, SHADOW_NONPRESENT_VALUE);