The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/xen/interface/xen-compat.h

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    1 /******************************************************************************
    2  * xen-compat.h
    3  * 
    4  * Guest OS interface to Xen.  Compatibility layer.
    5  * 
    6  * Permission is hereby granted, free of charge, to any person obtaining a copy
    7  * of this software and associated documentation files (the "Software"), to
    8  * deal in the Software without restriction, including without limitation the
    9  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
   10  * sell copies of the Software, and to permit persons to whom the Software is
   11  * furnished to do so, subject to the following conditions:
   12  *
   13  * The above copyright notice and this permission notice shall be included in
   14  * all copies or substantial portions of the Software.
   15  *
   16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
   22  * DEALINGS IN THE SOFTWARE.
   23  *
   24  * Copyright (c) 2006, Christian Limpach
   25  */
   26 
   27 #ifndef __XEN_PUBLIC_XEN_COMPAT_H__
   28 #define __XEN_PUBLIC_XEN_COMPAT_H__
   29 
   30 #define __XEN_LATEST_INTERFACE_VERSION__ 0x00040200
   31 
   32 #if defined(__XEN__) || defined(__XEN_TOOLS__)
   33 /* Xen is built with matching headers and implements the latest interface. */
   34 #define __XEN_INTERFACE_VERSION__ __XEN_LATEST_INTERFACE_VERSION__
   35 #elif !defined(__XEN_INTERFACE_VERSION__)
   36 /* Guests which do not specify a version get the legacy interface. */
   37 #define __XEN_INTERFACE_VERSION__ 0x00000000
   38 #endif
   39 
   40 #if __XEN_INTERFACE_VERSION__ > __XEN_LATEST_INTERFACE_VERSION__
   41 #error "These header files do not support the requested interface version."
   42 #endif
   43 
   44 #endif /* __XEN_PUBLIC_XEN_COMPAT_H__ */

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