1 files changed, 3 insertions, 2 deletions
diff --git a/src/arch/x86/include/arch/cpu.h b/src/arch/x86/include/arch/cpu.h
index 75f1f439b8..38066c15a2 100644
--- a/src/arch/x86/include/arch/cpu.h
+++ b/src/arch/x86/include/arch/cpu.h
@@ -309,8 +309,9 @@ struct postcar_frame {
 };
 
 /*
- * Initialize postcar_frame object allocating stack size in cbmem
- * with the provided size. Returns 0 on success, < 0 on error.
+ * Initialize postcar_frame object allocating stack from cbmem,
+ * with stack_size == 0, default 4 KiB is allocated.
+ * Returns 0 on success, < 0 on error.
  */
 int postcar_frame_init(struct postcar_frame *pcf, size_t stack_size);