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    SubjectRe: 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@gmail.com> wrote:
    >
    >> On Thu, Aug 7, 2008 at 1:15 PM, Pallipadi, Venkatesh
    >> <venkatesh.pallipadi@intel.com> wrote:
    >>
    >>> Adding Yinghai.
    >>>
    >>>
    >>>> -----Original Message-----
    >>>> From: Rafael J. Wysocki [mailto:rjw@sisk.pl]
    >>>> Sent: Thursday, August 07, 2008 1:14 PM
    >>>> To: Alexander Huemer
    >>>> Cc: linux-kernel@vger.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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