diff -Naur a/tools/python/xen/xend/XendConfig.py b/tools/python/xen/xend/XendConfig.py
--- a/tools/python/xen/xend/XendConfig.py	2008-01-18 13:43:47.000000000 -0700
+++ b/tools/python/xen/xend/XendConfig.py	2008-01-18 13:35:21.000000000 -0700
@@ -319,6 +319,7 @@
             'shadow_memory': 0,
             'memory_static_max': 0,
             'memory_dynamic_max': 0,
+            'timer_mode': 0,
             'devices': {},
             'security': None,
             'on_xend_start': 'ignore',
diff -Naur a/tools/python/xen/xend/XendDomainInfo.py b/tools/python/xen/xend/XendDomainInfo.py
--- a/tools/python/xen/xend/XendDomainInfo.py	2008-01-18 13:43:27.000000000 -0700
+++ b/tools/python/xen/xend/XendDomainInfo.py	2008-01-18 13:37:01.000000000 -0700
@@ -1542,7 +1542,7 @@
         # Set timer configration of domain
         if hvm:
             xc.hvm_set_param(self.domid, HVM_PARAM_TIMER_MODE,
-                long(self.info["platform"].get("timer_mode")))
+                long(self.info['timer_mode']))
 
         # Set maximum number of vcpus in domain
         xc.domain_max_vcpus(self.domid, int(self.info['VCPUs_max']))