linux-kernel - Re: [RFC PATCH] PCI MMCONFIG: add validation against ACPI motherboard resources

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Message-ID: <20070523223513.7dbb89f4@the-village.bc.nu>
Date:	Wed, 23 May 2007 22:35:13 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Jeff Garzik <jgarzik@...ox.com>
Cc:	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Robert Hancock <hancockr@...w.ca>,
	Olivier Galibert <galibert@...ox.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Andi Kleen <ak@...e.de>, Chuck Ebbert <cebbert@...hat.com>,
	Len Brown <lenb@...nel.org>
Subject: Re: [RFC PATCH] PCI MMCONFIG: add validation against ACPI
 motherboard resources

> One of the reasons why hardware vendors want to move away from 
> traditional accesses is to be able to use the larger config space in 
> PCI-Express, rather than being locked into the 256-byte legacy PCI 
> config space.

Mostly for treacherous computing extensions where subsets of the config
space can only be accessed by signed machines blessed by your favourite
movie company and video card vendor...

> Expect that to change, as MS shakes out the bugs (or maybe we are doing 
> their job for them?).

The longer it takes - the better.

Alan
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