From 7d3b1c2ccac2095ab585d9b47ddf4c93fce97fa7 Mon Sep 17 00:00:00 2001
From: "Peter H. Froehlich" <peter.hans.froehlich@gmail.com>
Date: Sat, 3 Oct 2015 17:48:36 -0400
Subject: [PATCH] Too many CPUs no longer crash.

---
 mp.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/mp.c b/mp.c
index 224b1bd..a257749 100644
--- a/mp.c
+++ b/mp.c
@@ -106,6 +106,12 @@ mpinit(void)
     switch(*p){
     case MPPROC:
       proc = (struct mpproc*)p;
+      if (ncpu >= NCPU) {
+        cprintf("mpinit: more than %d cpus, ignoring cpu%d\n",
+          NCPU, proc->apicid);
+        p += sizeof(struct mpproc);
+        continue;
+      }
       if(ncpu != proc->apicid){
         cprintf("mpinit: ncpu=%d apicid=%d\n", ncpu, proc->apicid);
         ismp = 0;
-- 
2.50.1