linux-kernel - Re: [PATCH] trim memory not covered by WB MTRRs

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Message-ID: <Pine.LNX.4.64.0706270743560.25629@p34.internal.lan>
Date:	Wed, 27 Jun 2007 07:44:08 -0400 (EDT)
From:	Justin Piszcz <jpiszcz@...idpixels.com>
To:	Pim Zandbergen <P.Zandbergen@...roscoop.nl>
cc:	Andi Kleen <andi@...stfloor.org>,
	Jesse Barnes <jesse.barnes@...el.com>,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Yinghai Lu <yhlu.kernel@...il.com>
Subject: Re: [PATCH] trim memory not covered by WB MTRRs



On Wed, 27 Jun 2007, Pim Zandbergen wrote:

> Andi Kleen wrote:
>
>> That's impossible. Either it limited your RAM or it didn't change anything.
>
> OK, maybe it's cosmetic, but I would not expect a negative number
>
> With old BIOS it printed
> **** MTRRs don't cover all of memory, trimmed 196608 pages
>
> with new BIOS it prints
> **** MTRRs don't cover all of memory, trimmed -65536 pages
>
> Pim
>

It works ok for me:

[    0.000000] **** MTRRs don't cover all of memory, trimmed 16384 pages

This is using his latest patch with 2.6.22-rc6.

Justin.
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