OvmfPkg/Include/IndustryStandard/Xen/xen-compat.h

   1 /******************************************************************************
   2  * xen-compat.h
   3  *
   4  * Guest OS interface to Xen.  Compatibility layer.
   5  *
   6  * SPDX-License-Identifier: MIT
   7  *
   8  * Copyright (c) 2006, Christian Limpach
   9  */
  10
  11 #ifndef __XEN_PUBLIC_XEN_COMPAT_H__
  12 #define __XEN_PUBLIC_XEN_COMPAT_H__
  13
  14 #define __XEN_LATEST_INTERFACE_VERSION__  0x00040400
  15
  16 #if defined (__XEN__) || defined (__XEN_TOOLS__)
  17 /* Xen is built with matching headers and implements the latest interface. */
  18 #define __XEN_INTERFACE_VERSION__  __XEN_LATEST_INTERFACE_VERSION__
  19 #elif !defined (__XEN_INTERFACE_VERSION__)
  20 /* Guests which do not specify a version get the legacy interface. */
  21 #define __XEN_INTERFACE_VERSION__  0x00000000
  22 #endif
  23
  24 #if __XEN_INTERFACE_VERSION__ > __XEN_LATEST_INTERFACE_VERSION__
  25   #error "These header files do not support the requested interface version."
  26 #endif
  27
  28 #endif /* __XEN_PUBLIC_XEN_COMPAT_H__ */