linux-kernel - Re: 2.6.27-rc1 mtrr fixes do not work

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Message-ID: <489B73B7.4090705@sbg.ac.at>
Date:	Fri, 08 Aug 2008 00:14:15 +0200
From:	Alexander Huemer <alexander.huemer@....ac.at>
To:	Yinghai Lu <yhlu.kernel@...il.com>
CC:	"Pallipadi, Venkatesh" <venkatesh.pallipadi@...el.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andi Kleen <andi@...stfloor.org>
Subject: Re: 2.6.27-rc1 mtrr fixes do not work

Yinghai Lu wrote:
> On Thu, Aug 7, 2008 at 1:23 PM, Yinghai Lu <yhlu.kernel@...il.com> wrote:
>   
>> On Thu, Aug 7, 2008 at 1:15 PM, Pallipadi, Venkatesh
>> <venkatesh.pallipadi@...el.com> wrote:
>>     
>>> Adding Yinghai.
>>>
>>>       
>>>> -----Original Message-----
>>>> From: Rafael J. Wysocki [mailto:rjw@...k.pl]
>>>> Sent: Thursday, August 07, 2008 1:14 PM
>>>> To: Alexander Huemer
>>>> Cc: linux-kernel@...r.kernel.org; Andi Kleen; Pallipadi, Venkatesh
>>>> Subject: Re: 2.6.27-rc1 mtrr fixes do not work
>>>>
>>>> [Adding CCs.]
>>>>
>>>> On Wednesday, 6 of August 2008, Alexander Huemer wrote:
>>>>         
>>>>> hi,
>>>>>
>>>>> mtrr is wrong on my machine. the fixes of 2.6.27-rc1 do not
>>>>>           
>>>> seem to work.
>>>>         
>>>>> bios is the newest version, mainboard vendor says it's not
>>>>>           
>>>> their fault.
>>>>         
>>>>> mainboard is tyan i5000pw.
>>>>> please tell me how i can help and cc me on answers, i am not
>>>>>           
>>>> subscribed.
>>>>         
>>>>> seaburg ~ # cat /proc/mtrr
>>>>> reg00: base=0x00000000 (   0MB), size=198656MB: write-back, count=1
>>>>> reg01: base=0x80000000 (2048MB), size=197632MB: write-back, count=1
>>>>> reg02: base=0x100000000 (4096MB), size=197632MB: write-back, count=1
>>>>>           
>>>>> seaburg ~ # zcat /proc/config.gz | grep MTRR
>>>>> CONFIG_MTRR=y
>>>>> CONFIG_MTRR_SANITIZER=y
>>>>> CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=1
>>>>> CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT=1
>>>>> seaburg ~ # uname -a
>>>>> Linux seaburg 2.6.27-rc1-blackbit #3 SMP Wed Aug 6 00:34:51 CEST 2008
>>>>> x86_64 Intel(R) Xeon(R) CPU E5420 @ 2.50GHz GenuineIntel GNU/Linux
>>>>> seaburg ~ #
>>>>>           
>> alexander,
>>
>> please send out
>> dmesg -s 262144 > dmesg.txt
>> or
>> dmesg -s 524288 > dmesg.txt
>>
>> you may need to set
>> CONFIG_LOG_BUF_SHIFT=19
>>     
>
> without mtrr_gran_size=64m mtrr_chunk_size=1024m on command line
>
> guess mtrr_chunk_size=512m could work
>
> YH
>   
yinghai,

thanks for the response.
i booted with
mtrr_gransize_64m mtrr_chunk_size_512m
mtrr_chunk_size_512m
here are the 2 dmesg outputs:
http://xx.vu/~ahuemer/dmesg_1.txt
http://xx.vu/~ahuemer/dmesg_2.txt
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