linux-kernel - Re: PCI MMCONFIG aperture size

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Message-Id: <200608221700.44690.ak@suse.de>
Date:	Tue, 22 Aug 2006 17:00:44 +0200
From:	Andi Kleen <ak@...e.de>
To:	Tim Hockin <thockin@...gle.com>
Cc:	matthew@....cx, greg@...ah.com,
	Linux Kernel mailing list <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...gle.com>
Subject: Re: PCI MMCONFIG aperture size

On Tuesday 22 August 2006 16:58, Tim Hockin wrote:
> On Tue, Aug 22, 2006 at 09:55:31AM +0200, Andi Kleen wrote:
> > 
> > > This says to me that (as long as the MCFG table has an End Bus Number of
> > > 31) a 32 MB decode area (32 MB aligned, too) is valid.
> > > 
> > > Would something like the below patch be accepted?  It makes my system
> > > work...
> > 
> > I already got a patch to remove the complete e820 validation code because
> > it broke far more than it fixed. That should fix your problem too.
> 
> Great!  Coming in 2.6.18?

Yes.

> 
> > > Also, why are we forcing 32 bit base addresses?  ACPI defines it to be a
> > > 64 bit base...
> > 
> > Where do you think we do that?
> 
> Looking at 2.6.17, we always have u32 base_address and u32
> base_reserved.  base_address is the only one ever referenced, that I can
> see.  I guess I should grab 2.6.18 pre-releases and recheck.

True. Please submit a patch.

-Andi
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