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

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Date:	Thu, 20 Dec 2007 20:42:21 -0500
From:	Tony Camuso <tcamuso@...hat.com>
To:	tcamuso@...hat.com
CC:	Robert Hancock <hancockr@...w.ca>, Greg KH <gregkh@...e.de>,
	linux-kernel@...r.kernel.org, linux-pci@...ey.karlin.mff.cuni.cz,
	"Chumbalkar, Nagananda" <Nagananda.Chumbalkar@...com>,
	Prarit Bhargava <prarit@...hat.com>, bnagendr@...hat.com
Subject: Re: [Fwd: Re: [PATCH 0/5]PCI: x86 MMCONFIG]

> Robert Hancock wrote:
> 
> First off, I would like to see confirmation from the horses's mouths 
> here (namely AMD, ServerWorks/Broadcom, and whoever else) that there 
> is no other way to get around this problem than disabling MMCONFIG for 
> accesses behind those chips.
>
> 

And here are the excerpts from that page of the spec which are salient
to the present discussion:

----------------------------------------------------------------------

The base configuration space of the AMD-8132 and PCI(-X) devices attached to it are accessible using only
the mechanism defined in PCI 2.3. Registers of PCI-X Mode 2 devices attached to the AMD-8132 in the
extended configuration space are not accessible. The AMD-8132 has no registers in the extended
configuration space.

Fix Planned
No


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