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Message-ID: <86802c440709061050x714a2bbbn776fb93cb46cdc49@mail.gmail.com>
Date:	Thu, 6 Sep 2007 10:50:19 -0700
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"Jesse Barnes" <jesse.barnes@...el.com>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	"Arne Georg Gleditsch" <argggh@...phinics.no>,
	"Andreas Herrmann" <andreas.herrmann3@....com>,
	"Robert Richter" <robert.richter@....com>,
	"Arjan van de Ven" <arjan@...radead.org>, patches@...-64.org,
	linux-kernel@...r.kernel.org
Subject: Re: [patches] [patch 3/5] x86: Add PCI extended config space access for AMD Barcelona

On 9/6/07, Jesse Barnes <jesse.barnes@...el.com> wrote:
> The problem with doing that is it would mean reserving some address
> space for mmconfig usage.  If the BIOS doesn't completely describe all
> the reserved regions via e820 or similar (apparently a common problem)
> we may end up making mmconfig overlap with another important area...
> It's pretty hard not to trust the BIOS here without completely
> replacing big chunks of it.

for Family 10h, you can use mmio range high beyond than the RAM
range...( just don't conflict with HT reserved range...)

YH
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