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

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Date:	Wed, 23 May 2007 20:18:23 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Jesse Barnes <jbarnes@...tuousgeek.org>
cc:	Olivier Galibert <galibert@...ox.com>,
	Robert Hancock <hancockr@...w.ca>,
	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



On Wed, 23 May 2007, Jesse Barnes wrote:
> 
> So what do you think?  You ok with enabling mmconfig if it's available as long 
> as we use type 1 accesses for non-extended stuff?  If so, I think the patches 
> are pretty much ready...

Sure. I think mmconfig is perfectly sane if it falls back to conf1 
accesses for legacy stuff..

And I also actually think that your patch to disable MMIO/PIO when testing 
the BAR size is fine - I just think that it should likely only be done for 
non-bridge devices (or at least non-host-bridge).

		Linus
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