Index: kern_switch.c
===================================================================
RCS file: /zoo/cvsup/FreeBSD-CVS/src/sys/kern/kern_switch.c,v
retrieving revision 1.129
diff -u -r1.129 kern_switch.c
--- kern_switch.c	8 Feb 2007 01:52:25 -0000	1.129
+++ kern_switch.c	13 Feb 2007 13:36:46 -0000
@@ -209,7 +209,11 @@
 	    TD_IS_INHIBITED(ctd))
 		return (0);
 #ifndef FULL_PREEMPTION
-	if (pri > PRI_MAX_ITHD && cpri < PRI_MIN_IDLE)
+	/*
+	 * XXXRW: pri == 40 hack is a special case to catch the netisr and
+	 * cause it not to preempt.
+	 */
+	if ((pri > PRI_MAX_ITHD && cpri < PRI_MIN_IDLE) || pri == 40)
 		return (0);
 #endif