Messages in this thread | | | Date | Tue, 24 Feb 2009 11:48:31 -0800 | From | Yinghai Lu <> | Subject | Re: [Linux 2.6.29-rc6] [drm:i915_set_status_page] *ERROR* can not ioremap virtual address for G33 hw status page |
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Ingo Molnar wrote: > * Yinghai Lu <yinghai@kernel.org> wrote: > >> On Mon, Feb 23, 2009 at 7:23 PM, Andy Isaacson <adi@hexapodia.org> wrote: >>> On Mon, Feb 23, 2009 at 05:01:10PM -0800, Yinghai Lu wrote: >>>> CONFIG_MTRR=y >>>> CONFIG_MTRR_SANITIZER=y >>>> CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=1 >>>> CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT=1 >>>> >>>> should help mtrr ones. >>>> >>>> please post bootlog with those option set. >>> Doesn't help here (Dell E6400). >>> >>> [ 0.000000] Initializing cgroup subsys cpuset >>> [ 0.000000] Initializing cgroup subsys cpu >>> [ 0.000000] Linux version 2.6.29-rc6-dirty (adi@cvp-loaner-01) (gcc version 4.3.2 (Ubuntu 4.3.2-1ubuntu12) ) #14 SMP Mon Feb 23 19:05:31 PST 2009 >>> [ 0.000000] Command line: root=/dev/sda1 ro >>> [ 0.000000] KERNEL supported cpus: >>> [ 0.000000] Intel GenuineIntel >>> [ 0.000000] AMD AuthenticAMD >>> [ 0.000000] Centaur CentaurHauls >>> [ 0.000000] BIOS-provided physical RAM map: >>> [ 0.000000] BIOS-e820: 0000000000000000 - 000000000009f000 (usable) >>> [ 0.000000] BIOS-e820: 000000000009f000 - 00000000000a0000 (reserved) >>> [ 0.000000] BIOS-e820: 0000000000100000 - 000000007d04d400 (usable) >>> [ 0.000000] BIOS-e820: 000000007d04d400 - 000000007d04f400 (ACPI NVS) >>> [ 0.000000] BIOS-e820: 000000007d04f400 - 0000000080000000 (reserved) >>> [ 0.000000] BIOS-e820: 00000000f8000000 - 00000000fc000000 (reserved) >>> [ 0.000000] BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved) >>> [ 0.000000] BIOS-e820: 00000000fed18000 - 00000000fed1c000 (reserved) >>> [ 0.000000] BIOS-e820: 00000000fed20000 - 00000000fed90000 (reserved) >>> [ 0.000000] BIOS-e820: 00000000feda0000 - 00000000feda6000 (reserved) >>> [ 0.000000] BIOS-e820: 00000000fee00000 - 00000000fee10000 (reserved) >>> [ 0.000000] BIOS-e820: 00000000ffe60000 - 0000000100000000 (reserved) >>> [ 0.000000] DMI 2.4 present. >>> [ 0.000000] last_pfn = 0x7d04d max_arch_pfn = 0x100000000 >>> [ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106 >>> [ 0.000000] original variable MTRRs >>> [ 0.000000] reg 0, base: 0GB, range: 32GB, type WB >>> [ 0.000000] reg 1, base: 3584MB, range: 512MB, type UC >>> [ 0.000000] reg 2, base: 2012MB, range: 4MB, type UC >>> [ 0.000000] reg 3, base: 2016MB, range: 32MB, type UC >> the BIOS is so sick >> according to MTRR, it said: >> [0,2012M) is WB >> [2048M, 3.5G) is WB too >> [4G, 32G) is WB >> >> but according to e820: about [0,2g) is RAM... >> >> really not how to workaround in BIOS. > > I suspect the box was tested with other OSs and limped along > there. Should we perhaps clear non-sensical MTRR entries? >
according to e820 to update MTRR?
in the previous discussion, some SMI region that is not stated in e820 could still need to be covered by MTRR with WB
YH
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