1 /* SPDX-License-Identifier: MIT */
2 /******************************************************************************
3  * xen-compat.h
4  *
5  * Guest OS interface to Xen.  Compatibility layer.
6  *
7  * Copyright (c) 2006, Christian Limpach
8  */
9 
10 #ifndef __XEN_PUBLIC_XEN_COMPAT_H__
11 #define __XEN_PUBLIC_XEN_COMPAT_H__
12 
13 #define __XEN_LATEST_INTERFACE_VERSION__ 0x00040e00
14 
15 #if defined(__XEN__) || defined(__XEN_TOOLS__)
16 /* Xen is built with matching headers and implements the latest interface. */
17 #define __XEN_INTERFACE_VERSION__ __XEN_LATEST_INTERFACE_VERSION__
18 #elif !defined(__XEN_INTERFACE_VERSION__)
19 /* Guests which do not specify a version get the legacy interface. */
20 #define __XEN_INTERFACE_VERSION__ 0x00000000
21 #endif
22 
23 #if __XEN_INTERFACE_VERSION__ > __XEN_LATEST_INTERFACE_VERSION__
24 #error "These header files do not support the requested interface version."
25 #endif
26 
27 #define COMPAT_FLEX_ARRAY_DIM XEN_FLEX_ARRAY_DIM
28 
29 #endif /* __XEN_PUBLIC_XEN_COMPAT_H__ */
30