Messages in this thread | | | Date | Thu, 7 Aug 2008 13:26:30 -0700 | From | "Yinghai Lu" <> | Subject | Re: 2.6.27-rc1 mtrr fixes do not work |
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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
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