linux-kernel - Re: Dell Studio 1536 needs pci=nocrs to boot.

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Date:	Tue, 3 Jan 2012 10:55:00 -0700
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	Jesse Barnes <jbarnes@...tuousgeek.org>
Cc:	Ingo Molnar <mingo@...e.hu>, Dave Jones <davej@...hat.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>, x86@...nel.org
Subject: Re: Dell Studio 1536 needs pci=nocrs to boot.

On Tue, Jan 3, 2012 at 10:30 AM, Jesse Barnes <jbarnes@...tuousgeek.org> wrote:
> On Sun, 1 Jan 2012 15:53:54 +0100
> Ingo Molnar <mingo@...e.hu> wrote:
>
>>
>> * Dave Jones <davej@...hat.com> wrote:
>>
>> > Some machines don't boot unless passed pci=nocrs.
>> > (See https://bugzilla.redhat.com/show_bug.cgi?id=770308 for details of
>> >   one report. Waiting on dmidecode output for others).
>> >
>> > Currently there is a DMI whitelist, even though the default is on.
>> >
>> > This patch extends that dmi list to add a blacklist to automatically
>> > apply disable it when necessary.
>> >
>> > Signed-off-by: Dave Jones <davej@...hat.com>
>>
>> Acked-by: Ingo Molnar <mingo@...e.hu>
>>
>> Jesse, will you take this one?
>
> Yeah, I can take it.  Bjorn, any comment (I'll bounce over the
> original)?

This is a band-aid, and we'll have to extend the blacklist for other
machines, but it's the best we have right now, so I think it's the
right thing to do.

It's probably the same as
https://bugzilla.kernel.org/show_bug.cgi?id=31602 (Dell 1546) and
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/647043

Bjorn
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