1 files changed, 2 insertions, 1 deletions
diff --git a/mp.c b/mp.c
index 59beda3..c34982d 100644
--- a/mp.c
+++ b/mp.c
@@ -191,7 +191,8 @@ mp_init(void)
 int
 mp_bcpu(void)
 {
-  return bcpu-cpus;
+  if (ismp) return bcpu-cpus;
+  else return 0;
 }
 
 extern void mpmain(void);