linux-kernel - Re: fixing "pci=use

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Message-Id: <200909211520.56800.bjorn.helgaas@hp.com>
Date:	Mon, 21 Sep 2009 15:20:55 -0600
From:	Bjorn Helgaas <bjorn.helgaas@...com>
To:	Larry Finger <Larry.Finger@...inger.net>
Cc:	Gary Hade <garyhade@...ibm.com>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Jaswinder Singh Rajput <jaswinder@...nel.org>,
	Yinghai Lu <yhlu.kernel@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, Len Brown <lenb@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: fixing "pci=use_crs"

On Saturday 19 September 2009 11:08:02 am Larry Finger wrote:
> Bjorn Helgaas wrote:
> > It looks like you have an HP box -- what exactly is it and
> > what BIOS version do you have?  Maybe I can borrow one to play
> > with myself so I don't have to bug you as much.
> 
> It is an HP dv2815nr. The BIOS is F.21. I understand that debugging
> is much easier when you have the machine in hand, but I don't mind
> providing information.
> ...
> Do you want me to boot with "pci=use_crs"?

That'd be great.  HP's bureaucracy makes it hard for me to borrow
machines.  If you could also turn on CONFIG_PNP_DEBUG_MESSAGES
and boot with "pnp.debug", we should get some clues about what _CRS
returns for all the ACPI devices.  Just attach the resulting dmesg
to the bugzilla (http://bugzilla.kernel.org/show_bug.cgi?id=14183).

Bjorn
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