diff --git a/xen/common/domain.c b/xen/common/domain.c
index 2cbc489..06b099f 100644
--- a/xen/common/domain.c
+++ b/xen/common/domain.c
@@ -348,6 +348,13 @@ struct domain *domain_create(
     return ERR_PTR(err);
 }
 
+static void nodeset_print(char *set, int size, const nodemask_t *mask) 
+{ 
+    *set++ = '['; 
+    set += nodelist_scnprintf(set, size-2, mask); 
+    *set++ = ']'; 
+    *set++ = '\0'; 
+}
 
 void domain_update_node_affinity(struct domain *d)
 {
@@ -357,6 +364,8 @@ void domain_update_node_affinity(struct domain *d)
     struct vcpu *v;
     unsigned int node;
 
+    char tmpstr[256];
+
     if ( !zalloc_cpumask_var(&cpumask) )
         return;
     if ( !alloc_cpumask_var(&online_affinity) )
@@ -394,6 +403,9 @@ void domain_update_node_affinity(struct domain *d)
 
     spin_unlock(&d->node_affinity_lock);
 
+    nodeset_print(tmpstr, sizeof(tmpstr), &d->node_affinity);
+    printk("--VCPU: %d, d->node_affinity: %s\n", v->vcpu_id, tmpstr);
+
     free_cpumask_var(online_affinity);
     free_cpumask_var(cpumask);
 }