From: "H. Peter Anvin" <hpa@zytor.com>
To: Yinghai Lu <Yinghai.Lu@Sun.COM>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>,
Ingo Molnar <mingo@elte.hu>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] x86: trim ram need to check if mtrr is there v2
Date: Thu, 24 Jan 2008 21:44:21 -0800 [thread overview]
Message-ID: <47997735.1020501@zytor.com> (raw)
In-Reply-To: <200801241947.55223.yinghai.lu@sun.com>
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.
-hpa
next prev parent reply other threads:[~2008-01-25 5:53 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-25 1:44 x86.git: mtrr trimming removes all memory under kvm Jeremy Fitzhardinge
2008-01-25 1:49 ` H. Peter Anvin
2008-01-25 2:21 ` Yinghai Lu
2008-01-25 2:32 ` Yinghai Lu
2008-01-25 10:52 ` Andi Kleen
2008-01-25 3:47 ` [PATCH] x86: trim ram need to check if mtrr is there v2 Yinghai Lu
2008-01-25 5:44 ` H. Peter Anvin [this message]
2008-01-25 7:50 ` Yinghai Lu
2008-01-25 7:43 ` Jeremy Fitzhardinge
2008-01-25 8:13 ` Yinghai Lu
2008-01-25 8:39 ` Yinghai Lu
2008-01-25 11:12 ` Ingo Molnar
2008-01-25 15:47 ` H. Peter Anvin
2008-01-25 8:42 ` [PATCH] x86: trim ram need to check if mtrr is there v3 Yinghai Lu
2008-01-25 11:09 ` Ingo Molnar
2008-01-25 18:55 ` Jeremy Fitzhardinge
2008-01-25 18:59 ` Ingo Molnar
2008-01-25 19:01 ` Jeremy Fitzhardinge
2008-01-25 19:04 ` Ingo Molnar
2008-01-25 19:27 ` Jeremy Fitzhardinge
2008-01-25 19:30 ` Ingo Molnar
2008-01-25 19:32 ` Yinghai Lu
2008-01-25 19:39 ` Jeremy Fitzhardinge
2008-01-25 19:19 ` Yinghai Lu
2008-01-25 19:04 ` Jeremy Fitzhardinge
2008-01-25 18:59 ` Jeremy Fitzhardinge
2008-01-25 19:02 ` Ingo Molnar
2008-01-25 14:21 ` Ingo Molnar
2008-01-25 14:57 ` Andi Kleen
2008-01-25 15:10 ` Ingo Molnar
2008-01-25 15:57 ` H. Peter Anvin
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