From: "Yinghai Lu" <yhlu.kernel@gmail.com>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: "Alan Cox" <alan@lxorguk.ukuu.org.uk>,
"Justin Piszcz" <jpiszcz@lucidpixels.com>,
"Jesse Barnes" <jbarnes@virtuousgeek.org>,
"Andi Kleen" <andi@firstfloor.org>,
linux-kernel@vger.kernel.org
Subject: Re: Intel's response Linux/MTRR/8GB Memory Support / Why doesn't the kernel realize the BIOS has problems and re-map appropriately?
Date: Mon, 4 Jun 2007 17:59:59 -0700 [thread overview]
Message-ID: <86802c440706041759q1b2d528ex24b3de514d09d9ef@mail.gmail.com> (raw)
In-Reply-To: <m1myzfwi0x.fsf@ebiederm.dsl.xmission.com>
On 6/4/07, Eric W. Biederman <ebiederm@xmission.com> wrote:
>
> Exactly, and given that this is a fairly easy thing to do, and that
> occasionally we see systems where this happens (even if their BIOS is
> later fixed). It is likely worth it for someone to write up the patch
> and that compare MTRRs with available memory, and to complain and
> reserve all memory that MTRRs claim is not write-back.
>
that is good.
Sometime BIOS can not even keep mtrr to the identical between
different CPU in SMP system.
Or reset mtrr according to e820 table.
YH
next prev parent reply other threads:[~2007-06-05 1:00 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-01 18:14 Justin Piszcz
2007-06-01 19:10 ` Jesse Barnes
2007-06-01 19:17 ` Justin Piszcz
2007-06-01 19:19 ` Justin Piszcz
2007-06-01 19:21 ` Jesse Barnes
2007-06-01 21:14 ` Andi Kleen
2007-06-01 20:19 ` Justin Piszcz
2007-06-01 20:24 ` Andi Kleen
2007-06-01 20:26 ` Justin Piszcz
2007-06-01 21:07 ` Jesse Barnes
2007-06-01 21:19 ` Andi Kleen
2007-06-01 21:35 ` Jesse Barnes
2007-06-01 21:41 ` Jesse Barnes
2007-06-02 1:05 ` Venki Pallipadi
2007-06-02 1:15 ` Jesse Barnes
2007-06-02 8:43 ` Justin Piszcz
2007-06-02 9:22 ` Andi Kleen
2007-06-02 20:11 ` Justin Piszcz
2007-06-03 9:15 ` Matt Keenan
2007-06-04 15:40 ` Jesse Barnes
2007-06-04 15:48 ` Ray Lee
2007-06-04 15:49 ` Justin Piszcz
2007-06-04 16:01 ` Ray Lee
2007-06-04 15:54 ` Jesse Barnes
2007-06-04 18:24 ` Andi Kleen
2007-06-04 18:13 ` Eric W. Biederman
2007-06-04 18:22 ` Justin Piszcz
2007-06-04 19:08 ` Justin Piszcz
2007-06-04 19:17 ` Jesse Barnes
2007-06-04 19:18 ` Alan Cox
2007-06-04 21:01 ` Eric W. Biederman
2007-06-05 0:59 ` Yinghai Lu [this message]
2007-06-05 1:38 ` Eric W. Biederman
2007-06-05 9:46 ` Andi Kleen
2007-06-05 13:18 ` Justin Piszcz
2007-06-05 17:20 ` Jesse Barnes
2007-06-07 8:47 ` Andi Kleen
2007-06-04 19:23 ` Andi Kleen
2007-06-04 19:24 ` Intel's response Linux/MTRR/8GB Memory Support / Why doesn't the kernel realize the BIOS has problems and re-map appropriately? II Andi Kleen
2007-06-05 0:54 ` Intel's response Linux/MTRR/8GB Memory Support / Why doesn't the kernel realize the BIOS has problems and re-map appropriately? Yinghai Lu
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