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Revert "x86: default to reboot via ACPI"

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This reverts commit c7ffa6c26277b403920e2255d10df849bd613380.

the assumptio of this change was that this would not break
any existing machine. Andrey Borzenkov reported troubles with
the ACPI reboot method: the system would hang on reboot, necessiating
a power cycle. Probably more systems are affected as well.

Also, there are patches queued up for v2.6.29 to disable virtualization
on emergency_restart() - which was the original motivation of
this change.

Reported-by: Andrey Borzenkov <arvidjaar@mail.ru>
Bisected-by: Andrey Borzenkov <arvidjaar@mail.ru>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Acked-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Eduardo Habkost 2008-11-04 12:52:44 -02:00 committed by Ingo Molnar
parent b9c3bfc24e
commit 8d00450d29
1 changed files with 1 additions and 5 deletions
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6
arch/x86/kernel/reboot.c
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@ -29,11 +29,7 @@ EXPORT_SYMBOL(pm_power_off);
static const struct desc_ptr no_idt = {};
static int reboot_mode;
/*
* Keyboard reset and triple fault may result in INIT, not RESET, which
* doesn't work when we're in vmx root mode. Try ACPI first.
*/
enum reboot_type reboot_type = BOOT_ACPI;
enum reboot_type reboot_type = BOOT_KBD;
int reboot_force;
#if defined(CONFIG_X86_32) && defined(CONFIG_SMP)