diff -r fe60bf79d96f tools/python/xen/xend/XendAPI.py
--- a/tools/python/xen/xend/XendAPI.py	Mon Jun 02 16:05:07 2008 +0100
+++ b/tools/python/xen/xend/XendAPI.py	Tue Jun 03 09:24:45 2008 +0900
@@ -1707,11 +1707,13 @@ class XendAPI(object):
                                      "domain_delete", vm_ref)
     
     def VM_hard_reboot(self, session, vm_ref):
-        return xen_api_error(XEND_ERROR_UNSUPPORTED)
+        return XendTask.log_progress(0, 100, do_vm_func,
+                                     "domain_reset", vm_ref)
     
     def VM_hard_shutdown(self, session, vm_ref):
         return XendTask.log_progress(0, 100, do_vm_func,
-                                     "domain_destroy", vm_ref)    
+                                     "domain_destroy", vm_ref)
+    
     def VM_pause(self, session, vm_ref):
         return XendTask.log_progress(0, 100, do_vm_func,
                                      "domain_pause", vm_ref)
diff -r fe60bf79d96f tools/python/xen/xm/main.py
--- a/tools/python/xen/xm/main.py	Mon Jun 02 16:05:07 2008 +0100
+++ b/tools/python/xen/xm/main.py	Tue Jun 03 09:22:09 2008 +0900
@@ -1257,8 +1257,10 @@ def xm_reset(args):
     arg_check(args, "reset", 1)
     dom = args[0]
 
-    # TODO: XenAPI
-    server.xend.domain.reset(dom)
+    if serverType == SERVER_XEN_API:
+        server.xenapi.VM.hard_reboot(get_single_vm(dom))
+    else:
+        server.xend.domain.reset(dom)
 
 def xm_pause(args):
     arg_check(args, "pause", 1)