diff --git a/util/log.c b/util/log.c
index 1857730..5ad72c1 100644
--- a/util/log.c
+++ b/util/log.c
@@ -42,8 +42,10 @@
     va_end(ap);
 }
 
+static bool log_uses_own_buffers;
+
 /* enable or disable low levels log */
-void do_qemu_set_log(int log_flags, bool use_own_buffers)
+void qemu_set_log(int log_flags)
 {
     qemu_loglevel = log_flags;
 #ifdef CONFIG_TRACE_LOG
@@ -70,7 +72,7 @@
             qemu_logfile = stderr;
         }
         /* must avoid mmap() usage of glibc by setting a buffer "by hand" */
-        if (use_own_buffers) {
+        if (log_uses_own_buffers) {
             static char logfile_buf[4096];
 
             setvbuf(qemu_logfile, logfile_buf, _IOLBF, sizeof(logfile_buf));
@@ -89,6 +91,12 @@
         qemu_log_close();
     }
 }
+
+void qemu_log_needs_buffers(void)
+{
+    log_uses_own_buffers = true;
+}
+
 /*
  * Allow the user to include %d in their logfile which will be
  * substituted with the current PID. This is useful for debugging many