1 files changed, 22 insertions, 3 deletions
diff --git a/target-i386/mem_helper.c b/target-i386/mem_helper.c
index 1aec8a5f19..8bf0da2433 100644
--- a/target-i386/mem_helper.c
+++ b/target-i386/mem_helper.c
@@ -23,18 +23,37 @@
 
 /* broken thread support */
 
-static spinlock_t global_cpu_lock = SPIN_LOCK_UNLOCKED;
+#if defined(CONFIG_USER_ONLY)
+QemuMutex global_cpu_lock;
 
 void helper_lock(void)
 {
-    spin_lock(&global_cpu_lock);
+    qemu_mutex_lock(&global_cpu_lock);
 }
 
 void helper_unlock(void)
 {
-    spin_unlock(&global_cpu_lock);
+    qemu_mutex_unlock(&global_cpu_lock);
 }
 
+void helper_lock_init(void)
+{
+    qemu_mutex_init(&global_cpu_lock);
+}
+#else
+void helper_lock(void)
+{
+}
+
+void helper_unlock(void)
+{
+}
+
+void helper_lock_init(void)
+{
+}
+#endif
+
 void helper_cmpxchg8b(CPUX86State *env, target_ulong a0)
 {
     uint64_t d;