Do not allocate a code_gen buffer on ia64 given it doesn't support
code generation.

Signed-off-by: Jes Sorensen <jes@sgi.com>

---
 qemu/exec.c |    4 ++++
 1 file changed, 4 insertions(+)

Index: kvm-userspace.git/qemu/exec.c
===================================================================
--- kvm-userspace.git.orig/qemu/exec.c
+++ kvm-userspace.git/qemu/exec.c
@@ -407,6 +407,10 @@
 
 static void code_gen_alloc(unsigned long tb_size)
 {
+#ifdef TARGET_IA64
+	return;
+#endif
+
 #ifdef USE_STATIC_CODE_GEN_BUFFER
     code_gen_buffer = static_code_gen_buffer;
     code_gen_buffer_size = DEFAULT_CODE_GEN_BUFFER_SIZE;