linux-kernel - Re: [2.6.34-rc1 REGRESSION] ahci 0000:00:1f.2: controller reset failed (0xffffffff)

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Date:	Wed, 7 Apr 2010 10:16:10 -0700
From:	Andy Isaacson <adi@...apodia.org>
To:	Bjorn Helgaas <bjorn.helgaas@...com>
Cc:	linux-kernel@...r.kernel.org,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Chris Wright <chrisw@...s-sol.org>,
	Matthew Wilcox <willy@...ux.intel.com>,
	Yinghai Lu <yinghai@...nel.org>
Subject: Re: [2.6.34-rc1 REGRESSION] ahci 0000:00:1f.2: controller reset
	failed (0xffffffff)

On Tue, Apr 06, 2010 at 10:21:20PM -0600, Bjorn Helgaas wrote:
> > The machine only has Linux installed, but I may have access to another
> > T3400 that can dual-boot.  Any preference for XP versus Win7?
> 
> Nope, whatever's more convenient for you should be fine.

On another T3400 with BIOS A03, Win7's Device Manager -> IDE ATA/ATAPI
controllers -> Standard AHCI 1.0 -> Resources -> Memory Range setting is
ff97f800-ff97ffff.  (If that's not the info you needed, let me know
where I need to look to get the answer.)

> > > Would you mind trying the patch below and the patch and kernel args
> > > here:
> > >   https://bugzilla.kernel.org/show_bug.cgi?id=15533#c5
> > > 
> > > This will (1) reserve the VGA area, so we should put the AHCI device
> > > elsewhere, and (2) collect a few more details about exactly what the
> > > BIOS is reporting.
> > 
> > I'll try that on Thursday.
> 
> Great, thanks!  Oh, and I forgot to ask: what BIOS version are you
> running?

BIOS Information
        Vendor: Dell Inc.
        Version: A04
        Release Date: 03/21/2008

> I think we still have a Linux bug in that we should be reserving the
> legacy VGA area, but if the BIOS is reporting an incorrect host bridge
> window, that will cause us to move the AHCI controller and tickle this
> bug when we wouldn't otherwise.

I'll try the debug patch tomorrow morning.

-andy
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