Fri Jul 29 21:21:43 2011 UTC ()
Don't shutdown the boostrap processor (BSP) because we may have to run
BIOS methods on it.  For example, ACPI requires that we execute the code
for changing sleep state on the BSP.

This may help the problem where folks' machines would hang instead of
powering off when they entered ACPI sleep state 5.

XXX If the BSP is already shut down, we should start it back up.


(dyoung)
diff -r1.89 -r1.90 src/sys/arch/x86/x86/cpu.c
cvs diff -r1.89 -r1.90 src/sys/arch/x86/x86/cpu.c (expand / switch to context diff)
--- src/sys/arch/x86/x86/cpu.c 2011/06/22 09:28:08 1.89
+++ src/sys/arch/x86/x86/cpu.c 2011/07/29 21:21:43 1.90
@@ -1,4 +1,4 @@
-/*	$NetBSD: cpu.c,v 1.89 2011/06/22 09:28:08 jruoho Exp $	*/
+/*	$NetBSD: cpu.c,v 1.90 2011/07/29 21:21:43 dyoung Exp $	*/
 
 /*-
  * Copyright (c) 2000, 2006, 2007, 2008 The NetBSD Foundation, Inc.
@@ -62,7 +62,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.89 2011/06/22 09:28:08 jruoho Exp $");
+__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.90 2011/07/29 21:21:43 dyoung Exp $");
 
 #include "opt_ddb.h"
 #include "opt_mpbios.h"		/* for MPDEBUG */
@@ -1137,6 +1137,12 @@
 static bool
 cpu_shutdown(device_t dv, int how)
 {
+	struct cpu_softc *sc = device_private(dv);
+	struct cpu_info *ci = sc->sc_info;
+
+	if (ci->ci_flags & CPUF_BSP)
+		return false;
+
 	return cpu_suspend(dv, NULL);
 }