linux-kernel - Re: [tip:x86/reboot] [PATCH] x86: Try the BIOS reboot method before the PCI reboot method

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Date:	Fri, 04 Apr 2014 21:38:57 +0800
From:	"Li, Aubrey" <aubrey.li@...ux.intel.com>
To:	Ingo Molnar <mingo@...nel.org>, hpa@...or.com,
	linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org,
	mjg59@...f.ucam.org, rostedt@...dmis.org, tglx@...utronix.de
CC:	linux-tip-commits@...r.kernel.org,
	Adam Williamson <awilliam@...hat.com>
Subject: Re: [tip:x86/reboot] [PATCH] x86: Try the BIOS reboot method before
 the PCI reboot method

<cc to adam>

On 2014/4/4 16:00, Ingo Molnar wrote:
> 
>>
>> [PATCH] x86: Try the BIOS reboot method before the PCI reboot method
> 
> So, JFYI, I have put this into x86/reboot to get it tested, but it's 
> not queued up for upstream yet until there's concensus.
> 
> (Steve testing it wouldn't hurt either.)
> 
> Thanks,
> 
> 	Ingo

The change is originated from the following bug:
https://bugzilla.kernel.org/show_bug.cgi?id=70931

The system will hang after BIOS or TRIPLE if it doesn't work, that's why
I added CF9 before BIOS and TRIPLE.

Adam may want to try this change to see if reboot works on his DELL
Venue 8 Pro.

I don't think there is enough justification to revert the patch. We
introduce EFI into the default list, we didn't see any reason to remove
it out so far.

Thanks,
-Aubrey



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