Message-ID: <3FFA7BB9.1030803@kolumbus.fi>
Date: Tue, 06 Jan 2004 11:11:21 +0200
From: =?ISO-8859-1?Q?Mika_Penttil=E4?= <mika.penttila@kolumbus.fi>
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To: Andi Kleen <ak@colin2.muc.de>
CC: Linus Torvalds <torvalds@osdl.org>, Andi Kleen <ak@muc.de>,
       David Hinds <dhinds@sonic.net>, linux-kernel@vger.kernel.org
Subject: Re: PCI memory allocation bug with CONFIG_HIGHMEM
References: <1aJdi-7TH-25@gated-at.bofh.it> <m37k054uqu.fsf@averell.firstfloor.org> <Pine.LNX.4.58.0401051937510.2653@home.osdl.org> <20040106040546.GA77287@colin2.muc.de> <Pine.LNX.4.58.0401052100380.2653@home.osdl.org> <20040106081203.GA44540@colin2.muc.de>
In-Reply-To: <20040106081203.GA44540@colin2.muc.de>
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Andi Kleen wrote:

>>If you ahve a proper e820 map, then it should work correctly, with 
>>anything that is RAM being marked as such (or being marked as "reserved").
>>    
>>
>
>Every e820 map i've seen did not have the AGP aperture marked reserved.
>
Why should it? It's not ram, and the aperture is marked as reserved 
while doing PCI resource assignment/reservation.

>It is just an undescribed hole.  In fact when you mark the aperture in the
>e820 map the Linux AGP driver stops working, it relies on it being
>in an undescribed hole.
>
>  
>


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