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If MP is disabled at the boot prompt, then don't use MPBIOS. When ACPI 

is also disabled, this completely avoids using ioapics.
This commit is contained in:
ad 2008-04-30 23:25:49 +00:00
parent 27a3fd2a36
commit a7fbd437d1
1 changed files with 8 additions and 3 deletions
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11
sys/arch/x86/x86/mpbios.c
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@ -1,4 +1,4 @@
/* $NetBSD: mpbios.c,v 1.42 2008/04/28 20:23:40 martin Exp $ */
/* $NetBSD: mpbios.c,v 1.43 2008/04/30 23:25:49 ad Exp $ */
/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
@ -96,7 +96,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: mpbios.c,v 1.42 2008/04/28 20:23:40 martin Exp $");
__KERNEL_RCSID(0, "$NetBSD: mpbios.c,v 1.43 2008/04/30 23:25:49 ad Exp $");
#include "acpi.h"
#include "lapic.h"
@ -109,12 +109,13 @@ __KERNEL_RCSID(0, "$NetBSD: mpbios.c,v 1.42 2008/04/28 20:23:40 martin Exp $");
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/bus.h>
#include <sys/reboot.h>
#include <uvm/uvm_extern.h>
#include <machine/specialreg.h>
#include <machine/cpuvar.h>
#include <machine/bus.h>
#include <machine/mpbiosvar.h>
#include <machine/pio.h>
@ -287,6 +288,10 @@ mpbios_probe(struct device *self)
struct mp_map t;
/* If MP is disabled, don't use MPBIOS or the ioapics. */
if ((boothowto & RB_MD1) != 0)
return 0;
/* see if EBDA exists */
mpbios_page = mpbios_map (0, PAGE_SIZE, &t);