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

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Message-ID: <489B85A3.7030500@sbg.ac.at>
Date:	Fri, 08 Aug 2008 01:30:43 +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 4:16 PM, Yinghai Lu <yhlu.kernel@...il.com> wrote:
>   
>> On Thu, Aug 7, 2008 at 3:14 PM, Alexander Huemer
>> <alexander.huemer@....ac.at> wrote:
>>     
>>> 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
>>>
>>>       
>> can you put "debug" in command line too?
>>     
>
> without mtrr_chunk_size etc in command line...please
>
> YH
>   
http://xx.vu/~ahuemer/dmesg_3.txt
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