Messages in this thread | ![/](/images/icornerl.gif) | | Date | Tue, 1 Apr 2003 14:44:04 +0200 | From | Eric Brunet <> | Subject | Re: 845GE Chipset severe performance problems |
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In-Reply-To: <1049039985.14686.11.camel@dhcp22.swansea.linux.org.uk> References: <188481168784.20030329130300@btinternet.com> <1048949147.6725.3.camel@dhcp22.swansea.linux.org.uk> <153495685337.20030329170457@btinternet.com> <1049039985.14686.11.camel@dhcp22.swansea.linux.org.uk>
As there is this thread about mtrr on Intel chipsets, I have some messages in the log about mtrr, and I don't know whether they are harmless warnings or errors that should be reported.
My computer is a 2.4 GhZ Pentium IV with an intel i845G/GL chipset. Motherboard and bios by shuttle.
$ cat /proc/mtrr reg00: base=0x00000000 ( 0MB), size= 512MB: write-back, count=1 reg01: base=0x1f800000 ( 504MB), size= 8MB: uncachable, count=1 reg02: base=0xe0000000 (3584MB), size= 128MB: write-combining, count=2
I have 512 MB of memory, the motherboard doesn't support more than 2GB and I don't see what is this range over 3.5 GB. Also, the two first overlaping ranges look suspicious.
I have the following error/warning messages in the log:
* with kernel 2.4.21pre3 (+ acpi patches) mtrr: base(0xe0020000) is not aligned on a size(0x800000) boundary (this happens just after initializing drm)
* with kernel 2.5.63 (+ acpi patches) mtrr: MTRR 2 not used (this happens once or twice during each sutdown. Note that I don't have drm with kernel 2.5.x, so I don't know if the first message is really gone)
So... Is this situation normal ?
Éric Brunet - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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