diff -Naur ../varnish-2.1.2.orig/lib/libjemalloc/jemalloc_linux.c ./lib/libjemalloc/jemalloc_linux.c
--- ../varnish-2.1.2.orig/lib/libjemalloc/jemalloc_linux.c 2010-05-05 09:32:02.000000000 +0200
+++ ./lib/libjemalloc/jemalloc_linux.c 2010-07-29 15:39:00.221232248 +0200
@@ -273,6 +273,11 @@
# define QUANTUM_2POW 4
# define SIZEOF_PTR_2POW 2
#endif
+#ifdef __s390__
+# define PAGESIZE_2POW 12
+# define QUANTUM_2POW 4
+# define SIZEOF_PTR_2POW 2
+#endif
#ifdef __s390x__
# define PAGESIZE_2POW 12
# define QUANTUM_2POW 4