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Date: Fri, 04 Apr 2014 10:43:07 +0800
From: "Li, Aubrey" <aubrey.li@...ux.intel.com>
To: Steven Rostedt <rostedt@...dmis.org>
CC: "H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...nel.org>,
Linus Torvalds <torvalds@...ux-foundation.org>,
LKML <linux-kernel@...r.kernel.org>,
Thomas Gleixner <tglx@...utronix.de>,
Matthew Garrett <mjg59@...f.ucam.org>
Subject: Re: [BUG] x86: reboot doesn't reboot
On 2014/4/4 10:16, Steven Rostedt wrote:
> On Fri, 04 Apr 2014 07:52:53 +0800
> "Li, Aubrey" <aubrey.li@...ux.intel.com> wrote:
>
>> On 2014/4/4 7:40, Steven Rostedt wrote:
>>> On Fri, 04 Apr 2014 07:23:32 +0800
>>> "Li, Aubrey" <aubrey.li@...ux.intel.com> wrote:
>>>
>>>> Can you please send the dmi table out?
>>>
>>> I already did as a gz attachment to H. Peter. You were on the Cc, did
>>> you not receive it?
>>>
>> Oh, I got it. This is a Preproduction machine.
>> When reboot failed via a method (=e or =p), there are two case.
>>
>> Case 1: this method do nothing, pass the attempt chance to the next method
>> Case 2: this method hangs the system
>>
>> I want to know if CF9 is case 1 or case 2. Could you please try the following
>> patch *without* any reboot parameters?
>>
>> (1) If we didn't see any string, then EFI hangs your box.
>> (2) if we see the first string but not the second one, CF9 hangs your box
>> (3) if we see both, couldn't be, because BIOS works on your box.
>
> Here's the output:
>
> [ 114.445327] reboot: Restarting system
> [ 114.449002] reboot: machine restart
> [ 114.453495] reboot: reboot via CF9...
>
Thanks Steven, I got what I want.
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