diff -Nur plpa-0.9a1-orig/src/libplpa/plpa_bottom.h plpa-0.9a1/src/libplpa/plpa_bottom.h
--- plpa-0.9a1-orig/src/libplpa/plpa_bottom.h	2005-12-14 00:19:07.000000000 +0100
+++ plpa-0.9a1/src/libplpa/plpa_bottom.h	2005-12-16 18:43:07.000000000 +0100
@@ -65,7 +65,7 @@
 
 /* Public macro to zero out a PLPA cpu set */
 #define PLPA_CPU_ZERO(cpuset) \
-    memset(&cpuset, 0, sizeof(PLPA_NAME(cpu_set_t)))
+    memset(cpuset, 0, sizeof(PLPA_NAME(cpu_set_t)))
 
 /* Public macro to set a bit in a PLPA cpu set */
 #define PLPA_CPU_SET(num, cpuset) \