gistfile1.txt

diff --git a/usr/src/uts/common/conf/param.c b/usr/src/uts/common/conf/param.c
index d72cfb0..5372a78 100644
--- a/usr/src/uts/common/conf/param.c
+++ b/usr/src/uts/common/conf/param.c
@@ -21,6 +21,7 @@
 /*
  * Copyright (c) 1983, 2010, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2012 Milan Jurik. All rights reserved.
+ * Copyright 2012 OmniTI Computer Consulting, Inc. All rights reserved.
  */
 
 #include <sys/types.h>
@@ -678,8 +679,39 @@ param_init(void)
        /*
         * calculations needed if hz was set in /etc/system
         */
-       if (hires_tick)
-               hz = hires_hz;
+       switch (hires_tick) {
+
+       case 0:
+
+       break;
+
+       case 1000:
+       case 2000:
+       case 4000:
+       case 5000:
+       case 8000:
+       case 10000:
+       case 20000:
+       case 25000:
+       case 40000:
+       case 50000:
+       case 100000:
+       case 125000:
+       case 200000:
+       case 250000:
+       case 500000:
+       case 1000000:
+
+       /* These are all valid "hires" (>= 1000Hz) rates.
+        * They must be both divisible by 1000 and into 1000000.
+        * Reset hires_hz and hz
+        */
+       hz = hires_hz = hires_tick;
+       break;
+
+       default:
+       hz = hires_hz;
+       }
 
        tick_per_msec = hz / MILLISEC;
        msec_per_tick = MILLISEC / hz;