linux-kernel - Re: [Bug #16294] [Q35 bisected] hang at init of i915 driver

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Date:	Fri, 9 Jul 2010 23:50:05 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	tim.gardner@...onical.com
Cc:	Kees Cook <kees@...flux.net>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Maciej Rutecki <maciej.rutecki@...il.com>
Subject: Re: [Bug #16294] [Q35 bisected] hang at init of i915 driver

On Friday, July 09, 2010, Tim Gardner wrote:
> On 07/09/2010 02:56 PM, Rafael J. Wysocki wrote:
> > On Friday, July 09, 2010, Kees Cook wrote:
> >> Hi Rafael,
> >>
> >> On Fri, Jul 09, 2010 at 01:41:39AM +0200, Rafael J. Wysocki wrote:
> >>> The following bug entry is on the current list of known regressions
> >>> from 2.6.34.  Please verify if it still should be listed and let the tracking team
> >>> know (either way).
> >>
> >> Yup, this is still a regression.  The fix is trivial (see below).
> >
> > Thanks for the update.
> >
> >>> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16294
> >>> Subject		: [Q35 bisected] hang at init of i915 driver
> >>> Submitter	: Kees Cook<kees@...flux.net>
> >>> Date		: 2010-06-25 18:20 (14 days old)
> >>> First-Bad-Commit: http://git.kernel.org/linus/f1befe71fa7a79ab733011b045639d8d809924ad
> >>
> >> diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
> >> index 9344216..0d9007d 100644
> >> --- a/drivers/char/agp/intel-gtt.c
> >> +++ b/drivers/char/agp/intel-gtt.c
> >> @@ -1229,6 +1229,7 @@ static int intel_i915_get_gtt_size(void)
> >>   				(gmch_ctrl&  G33_PGETBL_SIZE_MASK));
> >>   			size = 512;
> >>   		}
> >> +		size = 1024;
> >>   	} else {
> >>   		/* On previous hardware, the GTT size was just what was
> >>   		 * required to map the aperture.
> >
> > Rafael
> > --
> 
> Rafael - I forgot to Cc you on the patch I just sent to Dave Arlie. Kees 
> has confirmed that it fixes his problem.
> 
> http://marc.info/?l=linux-kernel&m=127870855118533&w=2

OK, I've added the patch information to the bug entry.

Rafael
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