--- /sys/src/9/port/proc.c
+++ /sys/src/9/port/proc.c
@@ -1381,13 +1381,15 @@ procflushseg(Segment *s)
 	 *  wait for all processors to take a clock interrupt
 	 *  and flush their mmu's
 	 */
-again:
-	for(nm = 0; nm < conf.nmach; nm++){
-		if(nm != m->machno && MACHP(nm)->flushmmu){
-			sched();
-			goto again;
-		}
-	}
+	/*
+	 * since the 386 is short of registers, m always contains the constant
+	 * MACHADDR, not MACHP(m->machno); see ../pc/dat.h.  so we can't just 
+	 * compare addresses with m.
+	 */
+	for(nm = 0; nm < conf.nmach; nm++)
+		if(nm != m->machno)
+			while(MACHP(nm)->flushmmu)
+				sched();
 }
 
 void