--- /n/sources/plan9/sys/src/9/port/proc.c	Mon Dec  2 22:42:53 2013
+++ /sys/src/9/port/proc.c	Sun Feb 28 00:00:00 2016
@@ -419,7 +419,7 @@
 		return;
 	}
 
-	if(up != p && (p->wired == nil || p->wired == m))
+	if(up != p && (p->wired == nil || p->wired == MACHP(m->machno)))
 		m->readied = p;	/* group scheduling */
 
 	updatecpu(p);
@@ -503,7 +503,7 @@ runproc(void)
 
 	/* cooperative scheduling until the clock ticks */
 	if((p=m->readied) && p->mach==0 && p->state==Ready
-	&& (p->wired == nil || p->wired == m)
+	&& (p->wired == nil || p->wired == MACHP(m->machno))
 	&& runq[Nrq-1].head == nil && runq[Nrq-2].head == nil){
 		skipscheds++;
 		rq = &runq[p->priority];