linux-kernel - Re: [PATCH -mm] 1/2: MMCONFIG: validate against ACPI motherboard resources

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Date:	Mon, 4 Jun 2007 08:37:10 -0700
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	Olivier Galibert <galibert@...ox.com>
Cc:	Robert Hancock <hancockr@...w.ca>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH -mm] 1/2: MMCONFIG: validate against ACPI motherboard resources

On Monday, June 4, 2007 5:12:50 Olivier Galibert wrote:
> On Tue, May 29, 2007 at 10:03:32PM -0600, Robert Hancock wrote:
> > -Validate that the area is reserved even if we read it from the
> > chipset directly and not from the MCFG table. This catches the case
> > where the BIOS didn't set the location properly in the chipset and
> > has mapped it over other things it shouldn't have.
>
> Just for the record, I still fundamentally disagree with that part.
> You're not catching what you think you're catching, since the chipset
> tells you what it is going to decode as mmconfig, no matter what is
> connected to it.

I'm not sure what you're objecting to?  Are you suggesting that we use 
mmconfig space as defined by the bridge register even if it's not mentioned 
(or doesn't match) the MCFG table?

Jesse
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