linux-kernel - Re: [PATCH] intel-agp: Avoid oops for G33 on 1MB stolen case

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Date:	Tue, 28 Oct 2008 21:41:55 -0700
From:	Brandon Philips <bphilips@...e.de>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	Dave Airlie <airlied@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	zhenyu.z.wang@...el.com, jbarnes@...tuousgeek.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] intel-agp: Avoid oops for G33 on 1MB stolen case

On 14:52 Mon 20 Oct 2008, Arjan van de Ven wrote:
> On Tue, 21 Oct 2008 07:44:46 +1000
> Dave Airlie <airlied@...hat.com> wrote:
> > > +				printk(KERN_WARNING PFX
> > > > +				       "Warning: G33 chipset
> > > > with 1MB"
> > > > +					" allocated. Older X.org
> > > > Intel drivers"
> > > > +					" will not work.\n");
> > > > +				WARN_ON(1);
> > > > +			}
> > > >  			gtt_entries = MB(1) - KB(size);
> > > >  			break;
> > > >  		case I855_GMCH_GMS_STOLEN_4M:
> > > 
> > > Is the bug which this patch addresses present in the 2.6.27 kernel?
> > > 
> > 
> > I've been a bit wary about this patch, but on re-review I suppose it
> > should be fine. We'll just get WARN_ONs in places we don't really want
> > them, and I'm sure Arjan will come complaining about them from
> > kerneloops.

I figured it was better to be noisy than to have people complaining
about X.org being broken.

Should it be something other than a WARN?

> the patch is not so nice for this;
> the printk+WARN_ON() really should be using WARN() instead; that also
> allows me to filter these guys out easily if needed.

Ok. I will send a new patch in a moment using WARN().

Thanks,

	Brandon
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