linux-kernel - Re: Misc fixes for 2.6.27

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Date:	Mon, 1 Sep 2008 16:16:39 -0700
From:	Arjan van de Ven <arjan@...radead.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	David Woodhouse <dwmw2@...radead.org>,
	torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: Misc fixes for 2.6.27

On Tue, 02 Sep 2008 01:01:19 +0200
Andi Kleen <andi@...stfloor.org> wrote:

> Arjan van de Ven <arjan@...radead.org> writes:
> 
> > On Tue, 02 Sep 2008 00:32:16 +0200
> > Andi Kleen <andi@...stfloor.org> wrote:
> >
> >> David Woodhouse <dwmw2@...radead.org> writes:
> >> > +
> >> > +static struct dmi_system_id __initdata intel_iommu_dmi_table[]
> >> > = {
> >> > +	{	/* Some DG33BU BIOS revisions advertised
> >> > non-existent VT-d */
> >> 
> >> Are you sure it's non existent? A G33 chipset should have it in
> >> hardware I thought.
> >
> > nope they don't/
> > later ones and some other models do though, but not the G33
> 
> I see. But presumably that chipset will be in other motherboards
> too and that BIOS bug might be also wider spread. So it would be
> still better to key off an PCI-ID or similar.
> 

it would be nice, no doubt, unfortunately this code runs (and needs to
run) before the PCI subsystem is initialized...

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