From 29ea153b133f29de1f76c8f87cdb0aa6300f6813 Mon Sep 17 00:00:00 2001
From: alc <alc@FreeBSD.org>
Date: Sat, 3 Jul 1999 06:33:48 +0000
Subject: An SMP-specific change: Add the lock prefix to RMW operations on
 ipending.

---
 sys/i386/isa/ipl.s | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'sys/i386/isa/ipl.s')

diff --git a/sys/i386/isa/ipl.s b/sys/i386/isa/ipl.s
index 66f31cf..51e8329 100644
--- a/sys/i386/isa/ipl.s
+++ b/sys/i386/isa/ipl.s
@@ -36,7 +36,7 @@
  *
  *	@(#)ipl.s
  *
- *	$Id: ipl.s,v 1.27 1999/05/06 09:44:54 bde Exp $
+ *	$Id: ipl.s,v 1.28 1999/06/01 18:20:15 jlemon Exp $
  */
 
 
@@ -236,6 +236,7 @@ doreti_unpend:
 	TEST_CIL
 	/* we enter with cpl locked */
 	bsfl	%ecx, %ecx		/* slow, but not worth optimizing */
+	lock
 	btrl	%ecx, _ipending
 	jnc	doreti_next2		/* some intr cleared memory copy */
 	cmpl	$NHWI, %ecx
@@ -377,7 +378,7 @@ swi_ast_phantom:
 	 */
 	cli
 	ICPL_LOCK
-	orl $SWI_AST_PENDING, _ipending
+	MPLOCKED orl $SWI_AST_PENDING, _ipending
 	/* cpl is unlocked in doreti_exit */
 	subl	%eax,%eax
 #ifdef CPL_AND_CML
-- 
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