linux-kernel - Re: [PATCH]X86:reboot.c Add some dmi entries to pci_reboot_dmi

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Date:	Tue, 01 Jun 2010 12:14:07 -0700
From:	"Justin P. Mattock" <justinmattock@...il.com>
To:	Matthew Garrett <mjg59@...f.ucam.org>
CC:	x86@...nel.org, tglx@...utronix.de, linux-kernel@...r.kernel.org
Subject: Re: [PATCH]X86:reboot.c Add some dmi entries to	pci_reboot_dmi_table.

On 06/01/2010 12:00 PM, Matthew Garrett wrote:
> Can you try with this patch? From what I can see of Apple ACPI tables,
> it should be functionally equivalent but less hate inducing.
>
> commit 9c8c25fda1b993a81b1a3a9bc4e9e8b0d7ac4062
> Author: Matthew Garrett<mjg@...hat.com>
> Date:   Tue Jun 1 14:40:55 2010 -0400
>
>      x86: Default to using ACPI for reboot
>
>      Running a hacked qemu with a modified seabios image that declares support
>      for reboot via ACPI shows that Windows will use the ACPI reboot vector
>      before falling back to hitting i8042. Change the default reboot method to
>      match this. This looks like it should improve life for Apples, which
>      declare the cf9 reboot method via ACPI, don't have a competent i8042
>      emulation and currently have a large DMI whitelist.
>
>      Signed-off-by: Matthew Garrett<mjg@...hat.com>
>
> diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
> index 8e1aac8..0a04c4b 100644
> --- a/arch/x86/kernel/reboot.c
> +++ b/arch/x86/kernel/reboot.c
> @@ -34,7 +34,7 @@ EXPORT_SYMBOL(pm_power_off);
>
>   static const struct desc_ptr no_idt = {};
>   static int reboot_mode;
> -enum reboot_type reboot_type = BOOT_KBD;
> +enum reboot_type reboot_type = BOOT_ACPI;
>   int reboot_force;
>
>   #if defined(CONFIG_X86_32)&&  defined(CONFIG_SMP)
>


o.k. applied.. unfortunately
I get init telling me it's rebooting,
then, nothing but a black screen.

Justin P. Mattock
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