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

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Date:	Tue, 01 Jun 2010 14:43:12 -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 02:29 PM, Matthew Garrett wrote:
> On Tue, Jun 01, 2010 at 02:26:01PM -0700, Justin P. Mattock wrote:
>> On 06/01/2010 02:12 PM, Matthew Garrett wrote:
>>> some level. How about the following (again, run as root):
>>>
>>> #include<sys/io.h>
>>>
>>> int main() {
>>> 	iopl(3);
>>> 	outb(0xfe, 0x64);
>>> 	return 0;
>>> }
>>>
>
> So, just to be clear, you run this as root and it immediately returns
> you to the prompt? This seems unlikely.

yep.. with the above code
I (save to a file) then
non-root gcc reboot.c -o reboot
then su
./reboot
just bake to the command prompt

>
>> ahh!! I see now:
>> grep 0x64 *.dsl
>
> No, that's unrelated.
>

alright!!

Justin P. Mattock
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