linux-kernel - Re: [PATCH] x86_32: trim memory by updating e820 v3

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Message-ID: <48162996.8020901@googlemail.com>
Date:	Mon, 28 Apr 2008 21:46:30 +0200
From:	Gabriel C <nix.or.die@...glemail.com>
To:	Yinghai Lu <yhlu.kernel@...il.com>
CC:	Mika Fischer <mika.fischer@...pnet.de>,
	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Jesse Barnes <jesse.barnes@...el.com>, balajirrao@...il.com,
	Andi Kleen <andi@...stfloor.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH] x86_32: trim memory by updating e820 v3

Yinghai Lu wrote:
> On Mon, Apr 28, 2008 at 7:24 AM, Gabriel C <nix.or.die@...glemail.com> wrote:
>> Mika Fischer wrote:
>>  > Hi Ingo,
>>  >
>>  > I'm having the same problem.
>>  >
>>  > Ingo Molnar schrieb:
>>  >> excellent. So just to make sure: this box never had proper graphics
>>  >> under Linux (under no previous kernel), due to the way the BIOS has set
>>  >> up the MTRR's, right?
>>  >
>>  > Well, not quite. X still works fine, but since the video memory is
>>  > overlapped by two of the existing MTRRs, X cannot add a write-combining
>>  > range for the video memory. That makes X rather slow especially if you
>>  > use DRI for Compiz etc.
>>
>>  Well you are lucky then :)
>>
>>  Yeah X 'worked' but it worked as slow as with vesa video driver here.
>>
>>  Also starting something like supertuxkart made it crash or I got a black screen :(
>>
>>  The only game I managed to start ( without X to crash ) without that patch was supertux but is was slow as hell.
>>  However I'm not a gamer but I need X to work right.
>>
> or can you change graphics card memory in BIOS to some big like 256M
> instead of 64M?
> 

It is set to 256M , I cannot even set it to 64MB in BIOS.
I have options for 128/256 MB only and I think I can change the mode to fixed.

> YH
> 

Gabriel
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