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SubjectRe: 2.6.27 mtrr fixes do not work
Yinghai Lu wrote:
> On Fri, Aug 29, 2008 at 8:09 AM, Alexander Huemer
> <alexander.huemer@sbg.ac.at> wrote:
>
>> Yinghai Lu wrote:
>>
>>> On Mon, Aug 25, 2008 at 4:29 PM, Alexander Huemer
>>> <alexander.huemer@sbg.ac.at> wrote:
>>>
>>>> Yinghai Lu wrote:
>>>>
>>>>> On Mon, Aug 25, 2008 at 1:44 PM, Yinghai Lu <yhlu.kernel@gmail.com> wrote:
>>>>>
>>>>>
>>>>>> On Mon, Aug 25, 2008 at 1:24 PM, Alexander Huemer
>>>>>> <alexander.huemer@sbg.ac.at> wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>> what do you mean with tip/master?
>>>>>>>
>>>>>>>
>>>>>> http://people.redhat.com/mingo/tip.git/readme.txt
>>>>>>
>>>>>>
>>>>>>
>>>>>>> here is my .config: http://xx.vu/~ahuemer/config.txt
>>>>>>>
>>>>>>>
>>>>> using your config, i do get mtrr cleanup
>>>>>
>>>>>
>>>> very interesting, thx.
>>>> so, what can i do to make it working here?
>>>> are there some more debug options i could turn on?
>>>>
>>>>
>>> can you post whole boot log with command line
>>>
>>> console=uart8250,io,0x3f8,115200n8 debug show_msr=1
>>>
>>> assume you have serial console...
>>>
>>> YH
>>>
>> yinghai,
>>
>> there are quite good news! 2.6.27-rc5 brought some significant changes.
>> now i get this:
>>
>> # dmesg|grep -E "(mtrr|uvesafb)"
>> Command line: root=/dev/sda1 video=uvesafb:1280x1024p-97,mtrr:2
>> debug show_msr=1
>> mtrr: your BIOS has set up an incorrect mask, fixing it up.
>> Kernel command line: root=/dev/sda1
>> video=uvesafb:1280x1024p-97,mtrr:2 debug show_msr=1
>> uvesafb: XGI Technology, Inc., Volari Z9s, 1.09.10, OEM: XGI, VBE v3.0
>> uvesafb: VBIOS/hardware supports DDC2 transfers
>> uvesafb: monitor limits: vf = 97 Hz, hf = 129 kHz, clk = 364 MHz
>> uvesafb: scrolling: redraw
>> uvesafb: framebuffer at 0xd8000000, mapped to 0xffffc20002100000,
>> using 10240k, total 32768k
>> mtrr: 0xd8000000,0x2000000 overlaps existing 0xd8000000,0x800000
>> # grep -E "(^\(WW\)|^\(EE\)|^\(NI\)|^\(??\))" /var/log/Xorg.0.log
>> (WW) VESA(0): Failed to set up write-combining range
>> (0xd8000000,0x2000000)
>> # cat /proc/mtrr
>> reg00: base=0x00000000 ( 0MB), size=2048MB: write-back, count=1
>> reg01: base=0x80000000 (2048MB), size=1024MB: write-back, count=1
>> reg02: base=0x100000000 (4096MB), size=1024MB: write-back, count=1
>> reg03: base=0xd8000000 (3456MB), size= 8MB: write-back, count=1
>>
>
> it seems BIOS setup extra entry (8M) and that is conflict with that of
> from graphical card.
>
> can you send out
> dmesg -s 262144 > dmesg.txt
> and
> lspci -vvxxx
> lspci -tv
>
> so could find out if your graphical card is really allocated the memory area...
>
> YH
>
http://xx.vu/~ahuemer/dmesg_5.txt
http://xx.vu/~ahuemer/lspci_vvxxx.txt
http://xx.vu/~ahuemer/lspci_tv.txt

--
regards
alex


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