--- researchv9/sys/sun3/vax.s	2018/04/24 17:21:59	1.1.1.1
+++ researchv9/sys/sun3/vax.s	2018/04/24 17:30:10	1.1.1.2
@@ -129,6 +129,8 @@
 	movl	sp@(4),a0	| get proc pointer
 	tstl	a0@(P_RLINK)	| firewall: p->p_rlink must be 0
 	jne	1f
+	btst	#SPROCIO_BIT-24,a0@(P_FLAG)	| if he's getting PROCIO'd,
+	jne	3f		| we leave him alone
 	moveq	#31,d1
 	clrl	d0
 	movb	a0@(P_PRI),d0	| get the priority
@@ -142,6 +144,7 @@
 	movl	a0@,a1
 	movl	a0,a1@(4)
 	bfset	_whichqs{d0:#1}	| set appropriate bit in whichqs
+3:
 	rts
 1:
 	pea	2f
@@ -157,7 +160,9 @@
  */
 	ENTRY(remrq)
 	movl	sp@(4),a0
-	clrl	d0
+	btst	#SPROCIO_BIT-24,a0@(P_FLAG)	| if he's getting PROCIO'd,
+	jne	rem2a				| we leave him alone
+	clrl	d0	
 	movb	a0@(P_PRI),d0
 	lsrl	#2,d0		| divide by 4
 	bftst	_whichqs{d0:#1}
@@ -172,6 +177,7 @@
 2:
 	movl	sp@(4),a0
 	clrl	a0@(P_RLINK)
+rem2a:
 	rts
 1:
 	pea	3f