linux-kernel - Re: [PATCH] x86: trim ram need to check if mtrr is there v2

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Message-ID: <86802c440801242350g3b170e35m8c02d8e26d5d1743@mail.gmail.com>
Date:	Thu, 24 Jan 2008 23:50:45 -0800
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	"Jeremy Fitzhardinge" <jeremy@...p.org>,
	"Ingo Molnar" <mingo@...e.hu>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86: trim ram need to check if mtrr is there v2

On Jan 24, 2008 9:44 PM, H. Peter Anvin <hpa@...or.com> wrote:
> Yinghai Lu wrote:
> >> H. Peter Anvin wrote:
> >> Looks like the code doesn't check that the CPU *has* MTRRs...
> >
> > so check it mtrr is there, also check if mem less 4G and is AMD as early
>
> Why the check for < 4 GB?  The same thing applies to memory below the 4
> GB limit -- in fact, we've had a number of that kind of systems in the past.

then we could remove that.

YH
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