linux-kernel - Re: [Fwd: Re: [PATCH 0/5]PCI: x86 MMCONFIG]

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Date:	Thu, 20 Dec 2007 21:07:20 -0500
From:	Loic Prylli <loic@...i.com>
To:	tcamuso@...hat.com
CC:	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org,
	linux-pci@...ey.karlin.mff.cuni.cz,
	"Chumbalkar, Nagananda" <Nagananda.Chumbalkar@...com>
Subject: Re: [Fwd: Re: [PATCH 0/5]PCI: x86 MMCONFIG]

On 12/20/2007 6:21 PM, Tony Camuso wrote:
>
> And the MMCONFIG problem with enterprise systems and workstations, where
> we do control the BIOS (for the most part), is due to known bugs in
> certain versions of certain chipsets, HT1000, AMD8132, among them, not
> the BIOS.

The lack of MMCONFIG support is indeed because some hypertransport
chipsets lack that support. But there are some BIOSes out there that are
advertising support for all busses in their MCFG acpi attribute (even
the busses managed by some amd8131 in a mixed nvidia-ck804/amd8131
motherboard), and the BIOS seems at least faulty for advertising a
capability that does not exist.

Loic

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