linux-kernel - Re: [PATCH 2/3] x86: mtrr_cleanup: first 1M should be coverred in var mtrrs

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Message-ID: <86802c440810041859s3695ff66v1833193f737551c8@mail.gmail.com>
Date:	Sat, 4 Oct 2008 18:59:37 -0700
From:	"Yinghai Lu" <yinghai@...nel.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	"Ingo Molnar" <mingo@...e.hu>,
	"Thomas Gleixner" <tglx@...utronix.de>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] x86: mtrr_cleanup: first 1M should be coverred in var mtrrs

On Sat, Oct 4, 2008 at 6:52 PM, H. Peter Anvin <hpa@...or.com> wrote:

> There are some systems which, apparently, don't have RAM there.  Don't ask
> me how or why.

very old system or
very new system only have super big cache?

YH
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