1 files changed, 28 insertions, 0 deletions
diff --git a/roms/edk2/OvmfPkg/Include/IndustryStandard/Xen/xen-compat.h b/roms/edk2/OvmfPkg/Include/IndustryStandard/Xen/xen-compat.h
new file mode 100644
index 000000000..c77049f79
--- /dev/null
+++ b/roms/edk2/OvmfPkg/Include/IndustryStandard/Xen/xen-compat.h
@@ -0,0 +1,28 @@
+/******************************************************************************
+ * xen-compat.h
+ *
+ * Guest OS interface to Xen.  Compatibility layer.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright (c) 2006, Christian Limpach
+ */
+
+#ifndef __XEN_PUBLIC_XEN_COMPAT_H__
+#define __XEN_PUBLIC_XEN_COMPAT_H__
+
+#define __XEN_LATEST_INTERFACE_VERSION__ 0x00040400
+
+#if defined(__XEN__) || defined(__XEN_TOOLS__)
+/* Xen is built with matching headers and implements the latest interface. */
+#define __XEN_INTERFACE_VERSION__ __XEN_LATEST_INTERFACE_VERSION__
+#elif !defined(__XEN_INTERFACE_VERSION__)
+/* Guests which do not specify a version get the legacy interface. */
+#define __XEN_INTERFACE_VERSION__ 0x00000000
+#endif
+
+#if __XEN_INTERFACE_VERSION__ > __XEN_LATEST_INTERFACE_VERSION__
+#error "These header files do not support the requested interface version."
+#endif
+
+#endif /* __XEN_PUBLIC_XEN_COMPAT_H__ */