From 1652052f525fd970e8993f14c74a485bad0255af Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Wed, 23 Mar 2016 14:48:03 -0600
Subject: [PATCH] Update a README.txt

---
 configs/sim/README.txt | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/configs/sim/README.txt b/configs/sim/README.txt
index ede76736df..2b0ce395f4 100644
--- a/configs/sim/README.txt
+++ b/configs/sim/README.txt
@@ -265,6 +265,13 @@ SMP
     -# CONFIG_SCHED_INSTRUMENTATION is not set
     +CONFIG_SCHED_INSTRUMENTATION=y
 
+  The SMP configuration will run with:
+
+    CONFIG_SMP_NCPUS=1
+
+  In this case there is, of course, no muli-CPU processing, but this does
+  verify the correctness of some the basic SMP logic.
+
   The NSH configuration can also be forced to run SMP, but suffers from
   the same quirky behavior.  I can be made reliable if you modify
   arch/sim/src/up_idle.c so that the IDLE loop only runs for CPU0.