[PATCH] xen: make (set|get)_xen_guest_handle available

[Christoph Egger <Christoph.Egger@amd.com>]

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Hi!

Make (set|get)_xen_guest_handle() always available.
This avoids code snippets in the guest like this:

#if __XEN_ITNERFACE_VERSION__ >= 0x00030201
set_xen_guest_handle(hnd, val);
#else
hnd = val;
#endif

Also make get_xen_guest_handle() available for the guest.
It is useful for the guest, too.

Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>

P.S.: Keir: Please apply this patch also in xen-3.4-testing and
xen-3.3-testing tree.

-- 
---to satisfy European Law for business letters:
Advanced Micro Devices GmbH
Karl-Hammerschmidt-Str. 34, 85609 Dornach b. Muenchen
Geschaeftsfuehrer: Thomas M. McCoy, Giuliano Meroni
Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen
Registergericht Muenchen, HRB Nr. 43632

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diff -r 41b2c4e4f674 xen/include/public/arch-x86/xen.h
--- a/xen/include/public/arch-x86/xen.h	Wed Jul 29 09:20:46 2009 +0100
+++ b/xen/include/public/arch-x86/xen.h	Thu Jul 30 11:08:01 2009 +0200
@@ -44,9 +44,13 @@
 #define DEFINE_XEN_GUEST_HANDLE(name)   __DEFINE_XEN_GUEST_HANDLE(name, name)
 #define __XEN_GUEST_HANDLE(name)        __guest_handle_ ## name
 #define XEN_GUEST_HANDLE(name)          __XEN_GUEST_HANDLE(name)
+
+#if __XEN_INTERFACE_VERSION__ >= 0x00030201
 #define set_xen_guest_handle(hnd, val)  do { (hnd).p = val; } while (0)
-#ifdef __XEN_TOOLS__
 #define get_xen_guest_handle(val, hnd)  do { val = (hnd).p; } while (0)
+#else
+#define set_xen_guest_handle(hnd, val)  (hnd) = val
+#define get_xen_guest_handle(val, hnd)  val = (hnd)
 #endif
 
 #if defined(__i386__)

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