i386/tdx: Implement tdx_kvm_type() for TDX

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>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Link: https://lore.kernel.org/r/20250508150002.689633-4-xiaoyao.li@intel.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c
index c9a3c02e3e3b294fefeb8cb502a3d6e3b132e9a0..653a8f46c2f8d8ef3427e8869ede92a3e36b4f22 100644 (file)
--- a/target/i386/kvm/kvm.c
+++ b/target/i386/kvm/kvm.c
@@ -192,6 +192,7 @@ 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 ab70566c7df923975873e3e42bb5df51d6eac1b1..21a4f877565cdbdc745474e60aed2967dd659dc1 100644 (file)
--- a/target/i386/kvm/tdx.c
+++ b/target/i386/kvm/tdx.c
@@ -12,8 +12,17 @@
 #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,
@@ -40,4 +49,7 @@ static void tdx_guest_finalize(Object *obj)
 
 static void tdx_guest_class_init(ObjectClass *oc, const void *data)
 {
+    X86ConfidentialGuestClass *x86_klass = X86_CONFIDENTIAL_GUEST_CLASS(oc);
+
+    x86_klass->kvm_type = tdx_kvm_type;
 }