linux-kernel - Re: [PATCH] x86_64: update e820 instead of updating end

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Date:	Sun, 20 Jan 2008 22:05:58 -0800
From:	Harvey Harrison <harvey.harrison@...il.com>
To:	Andi Kleen <ak@...e.de>
Cc:	Yinghai Lu <Yinghai.Lu@....com>, Ingo Molnar <mingo@...e.hu>,
	"H. Peter Anvin" <hpa@...or.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Jesse Barnes <jesse.barnes@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] x86_64: update e820 instead of updating end_pfn v2

On Mon, 2008-01-21 at 06:58 +0100, Andi Kleen wrote:
> >  {
> >  	u32 l, h;
> >  
> > @@ -661,8 +661,9 @@ static __init int amd_special_default_mt
> >  	 * Memory between 4GB and top of mem is forced WB by this magic bit.
> >  	 * Reserved before K8RevF, but should be zero there.
> >  	 */
> > -	if (l & Tom2ForceMemTypeWB)
> > -		return 1;
> > +	if (l & Tom2Enabled)
> > +		if (l & Tom2ForceMemTypeWB)
> > +			return 1;
> 
> That change is good agreed, but I would suggest to put it into a separate
> patch with a description
> 

Perhaps like this:

if (l & (Tom2Enabled|Tom2ForceMemTypeWB))
	return 1;

Harvey

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