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    SubjectRe: 2.6.27-rc1 mtrr fixes do not work
    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

    YH


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