From: Andi Kleen <andi@firstfloor.org>
To: Yinghai Lu <Yinghai.Lu@Sun.COM>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
Jeremy Fitzhardinge <jeremy@goop.org>,
Ingo Molnar <mingo@elte.hu>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: x86.git: mtrr trimming removes all memory under kvm
Date: Fri, 25 Jan 2008 11:52:35 +0100 [thread overview]
Message-ID: <p738x2e9nyk.fsf@bingen.suse.de> (raw)
In-Reply-To: <200801241832.55910.yinghai.lu@sun.com> (Yinghai Lu's message of "Thu\, 24 Jan 2008 18\:32\:55 -0800")
Yinghai Lu <Yinghai.Lu@Sun.COM> writes:
>
> + /* Doesn't apply to memory < 4GB */
> + if (end_pfn <= (0xffffffffUL >> PAGE_SHIFT))
> + return 0;
I don't think this makes sense to move outside the AMD workaround
because the normal MTRRs don't have an implicit hidden 4GB semantics.
-Andi
next prev parent reply other threads:[~2008-01-25 10:52 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 [this message]
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
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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