TDX VM requires VM type to be KVM_X86_TDX_VM. Implement tdx_kvm_type()
as X86ConfidentialGuestClass->kvm_type.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
---
Changes in v6:
 - new added patch;
---
 target/i386/kvm/kvm.c |  1 +
 target/i386/kvm/tdx.c | 12 ++++++++++++
 2 files changed, 13 insertions(+)

diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c
index 8e17942c3ba1..ed2e89946c44 100644
--- a/target/i386/kvm/kvm.c
+++ b/target/i386/kvm/kvm.c
@@ -194,6 +194,7 @@ static const char *vm_type_name[] = {
     [KVM_X86_SEV_VM] = "SEV",
     [KVM_X86_SEV_ES_VM] = "SEV-ES",
     [KVM_X86_SNP_VM] = "SEV-SNP",
+    [KVM_X86_TDX_VM] = "TDX",
 };
 
 bool kvm_is_vm_type_supported(int type)
diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c
index 166f53d2b9e3..bf8947549a96 100644
--- a/target/i386/kvm/tdx.c
+++ b/target/i386/kvm/tdx.c
@@ -14,8 +14,17 @@
 #include "qemu/osdep.h"
 #include "qom/object_interfaces.h"
 
+#include "kvm_i386.h"
 #include "tdx.h"
 
+static int tdx_kvm_type(X86ConfidentialGuest *cg)
+{
+    /* Do the object check */
+    TDX_GUEST(cg);
+
+    return KVM_X86_TDX_VM;
+}
+
 /* tdx guest */
 OBJECT_DEFINE_TYPE_WITH_INTERFACES(TdxGuest,
                                    tdx_guest,
@@ -42,4 +51,7 @@ static void tdx_guest_finalize(Object *obj)
 
 static void tdx_guest_class_init(ObjectClass *oc, void *data)
 {
+    X86ConfidentialGuestClass *x86_klass = X86_CONFIDENTIAL_GUEST_CLASS(oc);
+
+    x86_klass->kvm_type = tdx_kvm_type;
 }
-- 
2.34.1