linux-kernel - Re: [PATCH] x86: Add reboot quirk for Dell Precision M4600

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Message-ID: <24c471f7-80f5-4102-a12b-d6245c8d0921@email.android.com>
Date:	Sat, 06 Aug 2011 00:01:24 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Ingo Molnar <mingo@...e.hu>, Mel Gorman <mgorman@...e.de>
CC:	tglx@...utronix.de, bruno@...a-net.ch, mjg@...hat.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86: Add reboot quirk for Dell Precision M4600

Ingo Molnar <mingo@...e.hu> wrote:

>
>* Mel Gorman <mgorman@...e.de> wrote:
>
>> ACPI reboot does not work for Dell Precision M4600. Detect this
>> machine via DMI and force the use of the PCI reboot method.
>>     
>> Reported-and-tested-by: Bruno Friedmann <bruno@...a-net.ch>
>> Signed-off-by: Mel Gorman <mgorman@...e.de>
>> ---
>>  arch/x86/kernel/reboot.c |    9 +++++++++
>>  1 files changed, 9 insertions(+), 0 deletions(-)
>
>Weird - ACPI is the default Windows method of reboot - how come it 
>does not work on that box? Does Windows work around this specific 
>machine (unlikely), or is our ACPI boot sequence not 100% compatible 
>with the Windows method (more likely IMO)?
>
>Thanks,
>
>	Ingo

It seems almost all the affected machines are Dell, too... very odd, no?
-- 
Sent from my mobile phone. Please excuse my brevity and lack of formatting.
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