linux-kernel - Re: Intel's response Linux/MTRR/8GB Memory Support / Why doesn't the kernel realize the BIOS has problems and re-map appropriately?

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Message-Id: <200706051020.37812.jbarnes@virtuousgeek.org>
Date:	Tue, 5 Jun 2007 10:20:37 -0700
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Yinghai Lu <yhlu.kernel@...il.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Justin Piszcz <jpiszcz@...idpixels.com>,
	linux-kernel@...r.kernel.org
Subject: Re: Intel's response Linux/MTRR/8GB Memory Support / Why doesn't the kernel realize the BIOS has problems and re-map appropriately?

On Tuesday, June 5, 2007 2:46 am Andi Kleen wrote:
> > So the only safe thing we can do is not use memory that is not
> > write-back cached.  That we can positively detect and is a
> > conservative action so if anything will work that will.
>
> Jesse wrote such a patch (or rather it limitted end_pfn), but it
> broke the X server for so far unknown reasons.

It looks like I broke the /proc/mtrr interface somehow... I'll try to 
fix it tomorrow.

Jesse
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