diff --git a/arch/x86/kvm/vmx/main.c b/arch/x86/kvm/vmx/main.c
index 84d2dc818cf7..9fb3f28d8259 100644
--- a/arch/x86/kvm/vmx/main.c
+++ b/arch/x86/kvm/vmx/main.c
@@ -375,6 +375,200 @@ static void vt_vcpu_deliver_init(struct kvm_vcpu *vcpu)
 	kvm_vcpu_deliver_init(vcpu);
 }
 
+static void vt_vcpu_after_set_cpuid(struct kvm_vcpu *vcpu)
+{
+	if (is_td_vcpu(vcpu))
+		return;
+
+	vmx_vcpu_after_set_cpuid(vcpu);
+}
+
+static void vt_update_exception_bitmap(struct kvm_vcpu *vcpu)
+{
+	if (is_td_vcpu(vcpu))
+		return;
+
+	vmx_update_exception_bitmap(vcpu);
+}
+
+static u64 vt_get_segment_base(struct kvm_vcpu *vcpu, int seg)
+{
+	if (is_td_vcpu(vcpu))
+		return tdx_get_segment_base(vcpu, seg);
+
+	return vmx_get_segment_base(vcpu, seg);
+}
+
+static void vt_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var,
+			      int seg)
+{
+	if (is_td_vcpu(vcpu)) {
+		tdx_get_segment(vcpu, var, seg);
+		return;
+	}
+
+	vmx_get_segment(vcpu, var, seg);
+}
+
+static void vt_set_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var,
+			      int seg)
+{
+	if (is_td_vcpu(vcpu))
+		return;
+
+	vmx_set_segment(vcpu, var, seg);
+}
+
+static int vt_get_cpl(struct kvm_vcpu *vcpu)
+{
+	if (is_td_vcpu(vcpu))
+		return tdx_get_cpl(vcpu);
+
+	return vmx_get_cpl(vcpu);
+}
+
+static void vt_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l)
+{
+	if (is_td_vcpu(vcpu)) {
+		*db = 0;
+		*l = 0;
+		return;
+	}
+
+	vmx_get_cs_db_l_bits(vcpu, db, l);
+}
+
+static bool vt_is_valid_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
+{
+	if (is_td_vcpu(vcpu))
+		return true;
+
+	return vmx_is_valid_cr0(vcpu, cr0);
+}
+
+static void vt_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
+{
+	if (is_td_vcpu(vcpu))
+		return;
+
+	vmx_set_cr0(vcpu, cr0);
+}
+
+static bool vt_is_valid_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
+{
+	if (is_td_vcpu(vcpu))
+		return true;
+
+	return vmx_is_valid_cr4(vcpu, cr4);
+}
+
+static void vt_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
+{
+	if (is_td_vcpu(vcpu))
+		return;
+
+	vmx_set_cr4(vcpu, cr4);
+}
+
+static int vt_set_efer(struct kvm_vcpu *vcpu, u64 efer)
+{
+	if (is_td_vcpu(vcpu))
+		return 0;
+
+	return vmx_set_efer(vcpu, efer);
+}
+
+static void vt_get_idt(struct kvm_vcpu *vcpu, struct desc_ptr *dt)
+{
+	if (is_td_vcpu(vcpu)) {
+		memset(dt, 0, sizeof(*dt));
+		return;
+	}
+
+	vmx_get_idt(vcpu, dt);
+}
+
+static void vt_set_idt(struct kvm_vcpu *vcpu, struct desc_ptr *dt)
+{
+	if (is_td_vcpu(vcpu))
+		return;
+
+	vmx_set_idt(vcpu, dt);
+}
+
+static void vt_get_gdt(struct kvm_vcpu *vcpu, struct desc_ptr *dt)
+{
+	if (is_td_vcpu(vcpu)) {
+		memset(dt, 0, sizeof(*dt));
+		return;
+	}
+
+	vmx_get_gdt(vcpu, dt);
+}
+
+static void vt_set_gdt(struct kvm_vcpu *vcpu, struct desc_ptr *dt)
+{
+	if (is_td_vcpu(vcpu))
+		return;
+
+	vmx_set_gdt(vcpu, dt);
+}
+
+static void vt_set_dr7(struct kvm_vcpu *vcpu, unsigned long val)
+{
+	if (is_td_vcpu(vcpu))
+		return;
+
+	vmx_set_dr7(vcpu, val);
+}
+
+static void vt_sync_dirty_debug_regs(struct kvm_vcpu *vcpu)
+{
+	/*
+	 * MOV-DR exiting is always cleared for TD guest, even in debug mode.
+	 * Thus KVM_DEBUGREG_WONT_EXIT can never be set and it should never
+	 * reach here for TD vcpu.
+	 */
+	if (KVM_BUG_ON(is_td_vcpu(vcpu), vcpu->kvm))
+		return;
+
+	vmx_sync_dirty_debug_regs(vcpu);
+}
+
+static void vt_cache_reg(struct kvm_vcpu *vcpu, enum kvm_reg reg)
+{
+	if (is_td_vcpu(vcpu)) {
+		tdx_cache_reg(vcpu, reg);
+		return;
+	}
+
+	vmx_cache_reg(vcpu, reg);
+}
+
+static unsigned long vt_get_rflags(struct kvm_vcpu *vcpu)
+{
+	if (is_td_vcpu(vcpu))
+		return tdx_get_rflags(vcpu);
+
+	return vmx_get_rflags(vcpu);
+}
+
+static void vt_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags)
+{
+	if (is_td_vcpu(vcpu))
+		return;
+
+	vmx_set_rflags(vcpu, rflags);
+}
+
+static bool vt_get_if_flag(struct kvm_vcpu *vcpu)
+{
+	if (is_td_vcpu(vcpu))
+		return false;
+
+	return vmx_get_if_flag(vcpu);
+}
+
 static void vt_flush_tlb_all(struct kvm_vcpu *vcpu)
 {
 	if (is_td_vcpu(vcpu)) {
@@ -521,6 +715,14 @@ static void vt_inject_irq(struct kvm_vcpu *vcpu, bool reinjected)
 	vmx_inject_irq(vcpu, reinjected);
 }
 
+static void vt_inject_exception(struct kvm_vcpu *vcpu)
+{
+	if (is_td_vcpu(vcpu))
+		return;
+
+	vmx_inject_exception(vcpu);
+}
+
 static void vt_cancel_injection(struct kvm_vcpu *vcpu)
 {
 	if (is_td_vcpu(vcpu))
@@ -567,6 +769,39 @@ static void vt_get_exit_info(struct kvm_vcpu *vcpu, u32 *reason,
 	vmx_get_exit_info(vcpu, reason, info1, info2, intr_info, error_code);
 }
 
+
+static void vt_update_cr8_intercept(struct kvm_vcpu *vcpu, int tpr, int irr)
+{
+	if (is_td_vcpu(vcpu))
+		return;
+
+	vmx_update_cr8_intercept(vcpu, tpr, irr);
+}
+
+static void vt_load_eoi_exitmap(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap)
+{
+	if (is_td_vcpu(vcpu))
+		return;
+
+	vmx_load_eoi_exitmap(vcpu, eoi_exit_bitmap);
+}
+
+static int vt_set_tss_addr(struct kvm *kvm, unsigned int addr)
+{
+	if (is_td(kvm))
+		return 0;
+
+	return vmx_set_tss_addr(kvm, addr);
+}
+
+static int vt_set_identity_map_addr(struct kvm *kvm, u64 ident_addr)
+{
+	if (is_td(kvm))
+		return 0;
+
+	return vmx_set_identity_map_addr(kvm, ident_addr);
+}
+
 static u8 vt_get_mt_mask(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio)
 {
 	if (is_td_vcpu(vcpu))
@@ -661,30 +896,30 @@ struct kvm_x86_ops vt_x86_ops __initdata = {
 	.vcpu_load = vt_vcpu_load,
 	.vcpu_put = vt_vcpu_put,
 
-	.update_exception_bitmap = vmx_update_exception_bitmap,
+	.update_exception_bitmap = vt_update_exception_bitmap,
 	.get_msr_feature = vmx_get_msr_feature,
 	.get_msr = vt_get_msr,
 	.set_msr = vt_set_msr,
-	.get_segment_base = vmx_get_segment_base,
-	.get_segment = vmx_get_segment,
-	.set_segment = vmx_set_segment,
-	.get_cpl = vmx_get_cpl,
-	.get_cs_db_l_bits = vmx_get_cs_db_l_bits,
-	.is_valid_cr0 = vmx_is_valid_cr0,
-	.set_cr0 = vmx_set_cr0,
-	.is_valid_cr4 = vmx_is_valid_cr4,
-	.set_cr4 = vmx_set_cr4,
-	.set_efer = vmx_set_efer,
-	.get_idt = vmx_get_idt,
-	.set_idt = vmx_set_idt,
-	.get_gdt = vmx_get_gdt,
-	.set_gdt = vmx_set_gdt,
-	.set_dr7 = vmx_set_dr7,
-	.sync_dirty_debug_regs = vmx_sync_dirty_debug_regs,
-	.cache_reg = vmx_cache_reg,
-	.get_rflags = vmx_get_rflags,
-	.set_rflags = vmx_set_rflags,
-	.get_if_flag = vmx_get_if_flag,
+	.get_segment_base = vt_get_segment_base,
+	.get_segment = vt_get_segment,
+	.set_segment = vt_set_segment,
+	.get_cpl = vt_get_cpl,
+	.get_cs_db_l_bits = vt_get_cs_db_l_bits,
+	.is_valid_cr0 = vt_is_valid_cr0,
+	.set_cr0 = vt_set_cr0,
+	.is_valid_cr4 = vt_is_valid_cr4,
+	.set_cr4 = vt_set_cr4,
+	.set_efer = vt_set_efer,
+	.get_idt = vt_get_idt,
+	.set_idt = vt_set_idt,
+	.get_gdt = vt_get_gdt,
+	.set_gdt = vt_set_gdt,
+	.set_dr7 = vt_set_dr7,
+	.sync_dirty_debug_regs = vt_sync_dirty_debug_regs,
+	.cache_reg = vt_cache_reg,
+	.get_rflags = vt_get_rflags,
+	.set_rflags = vt_set_rflags,
+	.get_if_flag = vt_get_if_flag,
 
 	.flush_tlb_all = vt_flush_tlb_all,
 	.flush_tlb_current = vt_flush_tlb_current,
@@ -701,7 +936,7 @@ struct kvm_x86_ops vt_x86_ops __initdata = {
 	.patch_hypercall = vmx_patch_hypercall,
 	.inject_irq = vt_inject_irq,
 	.inject_nmi = vt_inject_nmi,
-	.inject_exception = vmx_inject_exception,
+	.inject_exception = vt_inject_exception,
 	.cancel_injection = vt_cancel_injection,
 	.interrupt_allowed = vt_interrupt_allowed,
 	.nmi_allowed = vt_nmi_allowed,
@@ -709,11 +944,11 @@ struct kvm_x86_ops vt_x86_ops __initdata = {
 	.set_nmi_mask = vt_set_nmi_mask,
 	.enable_nmi_window = vt_enable_nmi_window,
 	.enable_irq_window = vt_enable_irq_window,
-	.update_cr8_intercept = vmx_update_cr8_intercept,
+	.update_cr8_intercept = vt_update_cr8_intercept,
 	.set_virtual_apic_mode = vmx_set_virtual_apic_mode,
 	.set_apic_access_page_addr = vmx_set_apic_access_page_addr,
 	.refresh_apicv_exec_ctrl = vmx_refresh_apicv_exec_ctrl,
-	.load_eoi_exitmap = vmx_load_eoi_exitmap,
+	.load_eoi_exitmap = vt_load_eoi_exitmap,
 	.apicv_pre_state_restore = vt_apicv_pre_state_restore,
 	.required_apicv_inhibits = VMX_REQUIRED_APICV_INHIBITS,
 	.hwapic_irr_update = vmx_hwapic_irr_update,
@@ -724,13 +959,13 @@ struct kvm_x86_ops vt_x86_ops __initdata = {
 	.dy_apicv_has_pending_interrupt = pi_has_pending_interrupt,
 	.protected_apic_has_interrupt = vt_protected_apic_has_interrupt,
 
-	.set_tss_addr = vmx_set_tss_addr,
-	.set_identity_map_addr = vmx_set_identity_map_addr,
+	.set_tss_addr = vt_set_tss_addr,
+	.set_identity_map_addr = vt_set_identity_map_addr,
 	.get_mt_mask = vt_get_mt_mask,
 
 	.get_exit_info = vt_get_exit_info,
 
-	.vcpu_after_set_cpuid = vmx_vcpu_after_set_cpuid,
+	.vcpu_after_set_cpuid = vt_vcpu_after_set_cpuid,
 
 	.has_wbinvd_exit = cpu_has_vmx_wbinvd_exit,
 
diff --git a/arch/x86/kvm/vmx/tdx.c b/arch/x86/kvm/vmx/tdx.c
index 4c7c83105342..fc78e9ca61c1 100644
--- a/arch/x86/kvm/vmx/tdx.c
+++ b/arch/x86/kvm/vmx/tdx.c
@@ -639,8 +639,15 @@ int tdx_vcpu_create(struct kvm_vcpu *vcpu)
 
 	vcpu->arch.tsc_offset = to_kvm_tdx(vcpu->kvm)->tsc_offset;
 	vcpu->arch.l1_tsc_offset = vcpu->arch.tsc_offset;
-	vcpu->arch.guest_state_protected =
-		!(to_kvm_tdx(vcpu->kvm)->attributes & TDX_TD_ATTRIBUTE_DEBUG);
+	/*
+	 * TODO: support off-TD debug.  If TD DEBUG is enabled, guest state
+	 * can be accessed. guest_state_protected = false. and kvm ioctl to
+	 * access CPU states should be usable for user space VMM (e.g. qemu).
+	 *
+	 * vcpu->arch.guest_state_protected =
+	 *	!(to_kvm_tdx(vcpu->kvm)->attributes & TDX_TD_ATTRIBUTE_DEBUG);
+	 */
+	vcpu->arch.guest_state_protected = true;
 
 	if ((kvm_tdx->xfam & XFEATURE_MASK_XTILE) == XFEATURE_MASK_XTILE)
 		vcpu->arch.xfd_no_write_intercept = true;
@@ -2073,6 +2080,43 @@ void tdx_enable_smi_window(struct kvm_vcpu *vcpu)
 }
 #endif
 
+int tdx_get_cpl(struct kvm_vcpu *vcpu)
+{
+	return 0;
+}
+
+void tdx_cache_reg(struct kvm_vcpu *vcpu, enum kvm_reg reg)
+{
+	kvm_register_mark_available(vcpu, reg);
+	switch (reg) {
+	case VCPU_REGS_RSP:
+	case VCPU_REGS_RIP:
+	case VCPU_EXREG_PDPTR:
+	case VCPU_EXREG_CR0:
+	case VCPU_EXREG_CR3:
+	case VCPU_EXREG_CR4:
+		break;
+	default:
+		KVM_BUG_ON(1, vcpu->kvm);
+		break;
+	}
+}
+
+unsigned long tdx_get_rflags(struct kvm_vcpu *vcpu)
+{
+	return 0;
+}
+
+u64 tdx_get_segment_base(struct kvm_vcpu *vcpu, int seg)
+{
+	return 0;
+}
+
+void tdx_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg)
+{
+	memset(var, 0, sizeof(*var));
+}
+
 static int tdx_get_capabilities(struct kvm_tdx_cmd *cmd)
 {
 	struct kvm_tdx_capabilities __user *user_caps;
diff --git a/arch/x86/kvm/vmx/x86_ops.h b/arch/x86/kvm/vmx/x86_ops.h
index 7c63b2b48125..727c4d418601 100644
--- a/arch/x86/kvm/vmx/x86_ops.h
+++ b/arch/x86/kvm/vmx/x86_ops.h
@@ -169,6 +169,12 @@ bool tdx_has_emulated_msr(u32 index, bool write);
 int tdx_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr);
 int tdx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr);
 
+int tdx_get_cpl(struct kvm_vcpu *vcpu);
+void tdx_cache_reg(struct kvm_vcpu *vcpu, enum kvm_reg reg);
+unsigned long tdx_get_rflags(struct kvm_vcpu *vcpu);
+u64 tdx_get_segment_base(struct kvm_vcpu *vcpu, int seg);
+void tdx_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
+
 int tdx_vcpu_ioctl(struct kvm_vcpu *vcpu, void __user *argp);
 
 void tdx_flush_tlb(struct kvm_vcpu *vcpu);
@@ -221,6 +227,13 @@ static inline bool tdx_has_emulated_msr(u32 index, bool write) { return false; }
 static inline int tdx_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr) { return 1; }
 static inline int tdx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr) { return 1; }
 
+static inline int tdx_get_cpl(struct kvm_vcpu *vcpu) { return 0; }
+static inline void tdx_cache_reg(struct kvm_vcpu *vcpu, enum kvm_reg reg) {}
+static inline unsigned long tdx_get_rflags(struct kvm_vcpu *vcpu) { return 0; }
+static inline u64 tdx_get_segment_base(struct kvm_vcpu *vcpu, int seg) { return 0; }
+static inline void tdx_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var,
+				   int seg) {}
+
 static inline int tdx_vcpu_ioctl(struct kvm_vcpu *vcpu, void __user *argp) { return -EOPNOTSUPP; }
 
 static inline void tdx_flush_tlb(struct kvm_vcpu *vcpu) {}
