AW: warning in arch/x86/kernel/cpu/mtrr/generic.c:400 with2.6.29-rc3 on IBM x3400

[Morten P.D. Stevens]

Hi,

> buggy BIOS most likely. Had the kernel not fixed up the MTRRs you'd have
> a very slow and unhappy system now.

the IBM support said the bios is okay and there is a issue with linux 2.6.28 and 2.6.29-rc3?
linux 2.6.26 (default debian kernel) works fine.

-

Morten

-----Ursprüngliche Nachricht-----
Von: Ingo Molnar [mailto:mingo@xxxxxxx] 
Gesendet: Dienstag, 10. Februar 2009 00:45
An: Morten P.D. Stevens; Yinghai Lu; Thomas Gleixner; H. Peter Anvin; Arjan van de Ven
Cc: linux-kernel@xxxxxxxxxxxxxxx
Betreff: Re: warning in arch/x86/kernel/cpu/mtrr/generic.c:400 with2.6.29-rc3 on IBM x3400


* Morten P.D. Stevens <mstevens@xxxxxxxxxxxxxxxxxxxx> wrote:

> Hi,
> 
> Update:
> 
> the same issue with a linux 2.6.28.4 kernel.
> 
> [    0.000000] ------------[ cut here ]------------
> [    0.000000] WARNING: at arch/x86/kernel/cpu/mtrr/generic.c:404 generic_get_mtrr+0xdf/0x119()
> [    0.000000] mtrr: your BIOS has set up an incorrect mask, fixing it up.

buggy BIOS most likely. Had the kernel not fixed up the MTRRs you'd have
a very slow and unhappy system now.

	Ingo
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