linux-kernel - Re: [PATCH] x86,pci: dmi check for mackpro 2.2 mmconf

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Date:	Sat, 19 Jul 2008 15:14:38 -0400
From:	Jack Howarth <howarth@...mo.msbb.uc.edu>
To:	Jesse Barnes <jbarnes@...tuousgeek.org>
Cc:	Yinghai Lu <yhlu.kernel@...il.com>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Shaohua Li <shaohua.li@...el.com>
Subject: Re: [PATCH] x86,pci: dmi check for mackpro 2.2 mmconf

On Sat, Jul 19, 2008 at 12:04:48PM -0700, Jesse Barnes wrote:
> On Saturday, July 19, 2008 11:40 am Jack Howarth wrote:
> > Jesse,
> >     It seems that MacBook Pro users aren't the only ones suffering from
> > PCIE_ASPM...
> >
> > http://groups.google.com/group/linux.kernel/browse_thread/thread/cc1b8b3ef6
> >4e3257/dd4e427510bde7f0?lnk=raot
> >
> > I also discovered the pcie_noaspm kernel option from that thread which
> > allows me to boot the kernels built with PCIE_ASPM support by disabling
> > that feature.
> 
> Yeah, that's a good data point.  Thanks.  Sounds like there may also be some 
> ACPI interaction going on...
> 
> Jesse

Jesse,
   For what its worth, acpi=off alone is insufficent to inhibit the
kernel freezes when PCIE aspm is in use.
                  Jack
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