Re: 2.6.27 mtrr fixes do not work

[Alexander Huemer]

Yinghai Lu wrote:
> On Thu, Aug 14, 2008 at 7:09 AM, Alexander Huemer
> <alexander.huemer@xxxxxxxxx> wrote:
>   
> > Yinghai Lu wrote:
> >     
> > > On Thu, Aug 7, 2008 at 4:30 PM, Alexander Huemer
> > > <alexander.huemer@xxxxxxxxx> wrote:
> > >
> > >       
> > > > Yinghai Lu wrote:
> > > >
> > > >         
> > >       
> > > > > > can you put "debug" in command line too?
> > > > > >
> > > > > >
> > > > > >             
> > > > > without mtrr_chunk_size etc in command line...please
> > > > >
> > > > >
> > > > >           
> > > > http://xx.vu/~ahuemer/dmesg_3.txt
> > > >
> > > >
> > > >         
> > > do you have
> > > CONFIG_MTRR=y
> > > CONFIG_MTRR_SANITIZER=y
> > > CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=1
> > > CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT=1
> > >
> > > in your .config?
> > >
> > > YH
> > >
> > >       
> > 2.6.27_rc3 does not solve the problem either.
> > what can i do to help?
> >     
>
> please send out you config
>
> YH
>   
yinghai,

i just tried out 2.6.27-rc4, unfortunately without success.

here are my settings again,
if you need more info, just tell me.

as you can see, the mtrr size values are complete nonsense.
the framebuffer should be at d8000000.
i am unsure if this is the fault of the kernel or the bios.
or should the MTRR_SANITIZER resolv all broken bios issues?

   # uname -a
   Linux seaburg 2.6.27-rc4-blackbit #1 SMP Thu Aug 21 15:53:38 CEST
   2008 x86_64 Intel(R) Xeon(R) CPU E5420 @ 2.50GHz GenuineIntel GNU/Linux
   # grep -E "(^\(WW\)|^\(EE\)|^\(NI\)|^\(??\))" /var/log/Xorg.0.log
   (WW) VESA(0): Failed to set up write-combining range
   (0xd8000000,0x2000000)
   # dmesg|grep mtrr                                               
   Command line: root=/dev/sda1
   video=uvesafb:1280x1024-24@97,mtrr:3,ywrap mtrr_chunk_size=512m
   Kernel command line: root=/dev/sda1
   video=uvesafb:1280x1024-24@97,mtrr:3,ywrap mtrr_chunk_size=512m
   mtrr: type mismatch for d8000000,800000 old: write-back new:
   write-combining
   mtrr: type mismatch for d8000000,400000 old: write-back new:
   write-combining
   mtrr: type mismatch for d8000000,200000 old: write-back new:
   write-combining
   mtrr: type mismatch for d8000000,100000 old: write-back new:
   write-combining
   mtrr: type mismatch for d8000000,80000 old: write-back new:
   write-combining
   mtrr: type mismatch for d8000000,40000 old: write-back new:
   write-combining
   mtrr: type mismatch for d8000000,20000 old: write-back new:
   write-combining
   mtrr: type mismatch for d8000000,10000 old: write-back new:
   write-combining
   mtrr: type mismatch for d8000000,8000 old: write-back new:
   write-combining
   mtrr: type mismatch for d8000000,4000 old: write-back new:
   write-combining
   mtrr: type mismatch for d8000000,2000 old: write-back new:
   write-combining
   mtrr: type mismatch for d8000000,1000 old: write-back new:
   write-combining
   mtrr: type mismatch for d8000000,2000000 old: write-back new:
   write-combining
   # grep MemTotal /proc/meminfo                         
   MemTotal:      4041088 kB
   # grep MTRR /usr/src/linux/.config                 
   CONFIG_MTRR=y
   CONFIG_MTRR_SANITIZER=y
   CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=1
   CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT=1
   # dmesg|grep uvesafb  
   Command line: root=/dev/sda1
   video=uvesafb:1280x1024-24@97,mtrr:3,ywrap mtrr_chunk_size=512m
   Kernel command line: root=/dev/sda1
   video=uvesafb:1280x1024-24@97,mtrr:3,ywrap mtrr_chunk_size=512m
   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
   # 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
   #


--
regards
alex

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