target/i386: introduce x86-confidential-guest

Introduce a common superclass for x86 confidential guest implementations.
It will extend ConfidentialGuestSupportClass with a method that provides
the VM type to be passed to KVM_CREATE_VM.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/target/i386/confidential-guest.h b/target/i386/confidential-guest.h
new file mode 100644
index 0000000000..ca12d5a8fb
--- /dev/null
+++ b/target/i386/confidential-guest.h
@@ -0,0 +1,40 @@
+/*
+ * x86-specific confidential guest methods.
+ *
+ * Copyright (c) 2024 Red Hat Inc.
+ *
+ * Authors:
+ *  Paolo Bonzini <pbonzini@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+#ifndef TARGET_I386_CG_H
+#define TARGET_I386_CG_H
+
+#include "qom/object.h"
+
+#include "exec/confidential-guest-support.h"
+
+#define TYPE_X86_CONFIDENTIAL_GUEST "x86-confidential-guest"
+
+OBJECT_DECLARE_TYPE(X86ConfidentialGuest,
+                    X86ConfidentialGuestClass,
+                    X86_CONFIDENTIAL_GUEST)
+
+struct X86ConfidentialGuest {
+    /* <private> */
+    ConfidentialGuestSupport parent_obj;
+};
+
+/**
+ * X86ConfidentialGuestClass:
+ *
+ * Class to be implemented by confidential-guest-support concrete objects
+ * for the x86 target.
+ */
+struct X86ConfidentialGuestClass {
+    /* <private> */
+    ConfidentialGuestSupportClass parent;
+};
+#endif