From: Andi Kleen <ak@suse.de>
To: "Robert Richter" <robert.richter@amd.com>
Subject: Re: [patches] [patch 3/5] x86: Add PCI extended config space access for AMD Barcelona
Date: Mon, 3 Sep 2007 16:24:09 +0100
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Cc: "Andreas Herrmann" <andreas.herrmann3@amd.com>, patches@x86-64.org,
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On Monday 03 September 2007 15:48, Robert Richter wrote:
> Andi,
>
> On 03.09.07 14:48:41, Andi Kleen wrote:
> > > As said above, I do not see CF8 access as a workaround. I expect my
> > > system to work in the same way also if MMCONFIG is not available.
> >
> > It should boot sure, but exotic stuff not working is not a major issue
>
> It is not only about booting the system without MMCONFIG, it is also
> about using the system

There are limits on how many BIOS bug workaround (and all this
patch kit is nothing more than a elaborate BIOS bug workaround) we can do.
IMHO you're far exceeding the threshold.

Better would be to invest that energy to get the BIOSes fixed.

> . For this PCI ECS CF8 access is needed.

AER and IBS are all totally optional features and the systems
will be completely usable without them.

-Andi
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