diff --git a/tests/memcheck-libunwind.supp b/tests/memcheck-libunwind.supp
index 04ee9b1a93..2916b8d2e9 100644
--- a/tests/memcheck-libunwind.supp
+++ b/tests/memcheck-libunwind.supp
@@ -21,3 +21,17 @@
    obj:*libunwind*
    ...
 }
+{
+   libunwind calls glibc's setcontext on some architectures, e.g. ppc
+   Memcheck:Addr8
+   fun:setcontext*
+   ...
+}
+{
+   libunwind exception suppresion
+   Memcheck:Param
+   write(buf)
+   ...
+   obj:*libunwind*
+   ...
+}