[POWERPC] Merge in outstanding changes from xenppc-unstable.hg.

It's a long story, but basically a small divergence in xenppc-unstable meant a
large number of changesets couldn't be directly imported to xen-unstable, so
this changeset includes all of them.
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>

tools/python/xen/lowlevel/xc/xc.c

@@ -809,6 +809,28 @@ static PyObject *pyxc_domain_memory_increase_reservation(XcObject *self,
     return zero;
 }
 
+#ifdef __powerpc__
+static PyObject *pyxc_alloc_real_mode_area(XcObject *self,
+                                           PyObject *args,
+                                           PyObject *kwds)
+{
+    uint32_t dom;
+    unsigned int log;
+
+    static char *kwd_list[] = { "dom", "log", NULL };
+
+    if ( !PyArg_ParseTupleAndKeywords(args, kwds, "ii", kwd_list, 
+                                      &dom, &log) )
+        return NULL;
+
+    if ( xc_alloc_real_mode_area(self->xc_handle, dom, log) )
+        return PyErr_SetFromErrno(xc_error);
+
+    Py_INCREF(zero);
+    return zero;
+}
+#endif
+
 static PyObject *pyxc_domain_ioport_permission(XcObject *self,
                                                PyObject *args,
                                                PyObject *kwds)
@@ -1185,6 +1207,16 @@ static PyMethodDef pyxc_methods[] = {
       " mem_kb [long]: .\n"
       "Returns: [int] 0 on success; -1 on error.\n" },
 
+#ifdef __powerpc__
+    { "arch_alloc_real_mode_area", 
+      (PyCFunction)pyxc_alloc_real_mode_area, 
+      METH_VARARGS | METH_KEYWORDS, "\n"
+      "Allocate a domain's real mode area.\n"
+      " dom [int]: Identifier of domain.\n"
+      " log [int]: Specifies the area's size.\n"
+      "Returns: [int] 0 on success; -1 on error.\n" },
+#endif
+
     { "domain_ioport_permission",
       (PyCFunction)pyxc_domain_ioport_permission,
       METH_VARARGS | METH_KEYWORDS, "\n"