linux-kernel - Re: Info: mapping multiple BARs. Your kernel is fine.

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Message-ID: <20140416223122.GA2767@redhat.com>
Date:	Wed, 16 Apr 2014 18:31:22 -0400
From:	Dave Jones <davej@...hat.com>
To:	Bjorn Helgaas <bhelgaas@...gle.com>
Cc:	Borislav Petkov <bp@...en8.de>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	"Zhang, Rui" <rui.zhang@...el.com>,
	"Lu, Aaron" <aaron.lu@...el.com>,
	lkml <linux-kernel@...r.kernel.org>,
	"x86@...nel.org" <x86@...nel.org>,
	Linux PCI <linux-pci@...r.kernel.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Yinghai Lu <yinghai@...nel.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Stephane Eranian <eranian@...gle.com>,
	"Yan, Zheng Z" <zheng.z.yan@...el.com>
Subject: Re: Info: mapping multiple BARs. Your kernel is fine.

On Wed, Apr 16, 2014 at 02:31:38PM -0600, Bjorn Helgaas wrote:
 > On Wed, Apr 16, 2014 at 09:04:04PM +0200, Borislav Petkov wrote:
 > > On Thu, Mar 20, 2014 at 02:48:30PM -0600, Bjorn Helgaas wrote:
 > > > Right.  Even if we had this long-term solution, we'd still have
 > > > Stephane's current problem, because the PNP0C02 _CRS is still wrong.
 > > > 
 > > > We do have a drivers/pnp/quirks.c where we could conceivably adjust
 > > > the PNP resource if we found the matching PCI device and MCHBAR.  That
 > > > should solve Stephane's problem even with the current
 > > > drivers/pnp/system.c.
 > > 
 > > Guys, this still triggers in -rc1. Do we have a fix or something
 > > testable at least?
 > 
 > Hi Boris,
 > 
 > Can you try the patch below?

I'm seeing the exact same message on my thinkpad t430s.
When I try your patch, modesetting no longer works. When it tries
to change to the framebuffer I get a black screen and lockup.
If I boot with nomodeset it locks up when it gets to X.
It all scrolls by too fast to read, but it looks like there's still
a backtrace present.

	Dave

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