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    SubjectRe: [PATCH] trim memory not covered by WB MTRRs


    On Thu, 14 Jun 2007, Pim Zandbergen wrote:

    > Thanks for this patch. I was having the exact same symptoms as Justin Piszcz,
    > on a different, but similar motherboard:
    >
    > Motherboard: GigaByte GA-G33-DS3R
    > BIOS rev: F2
    > Chipset: Intel G33
    > Memory: 8GB
    > Distro: Fedora 7 x86_64
    > Kernel: kernel-2.6.21-1.3194.fc7
    >
    > Building vanilla 2.6.22-rc4 with your patch solved the problem.
    >
    > I'm now seeing this in the syslog
    >
    > ***************
    > **** WARNING: likely BIOS bug
    > **** MTRRs don't cover all of memory, trimmed 196608 pages
    > ***************
    >
    > leaving me 7416672 kB of usable memory.
    >
    > If there's any way I can help with more info or testing,
    > then let me know.
    >
    > Thanks,
    > Pim
    >

    That's strange, I guess different chipsets 'chew' up different amounts of
    memory OR you have your DVT(?) (video-card memory/aperature) set to 256MB?
    I have mine set to 128MB, in top:

    Mem: 8039576k total, 6187304k used, 1852272k free, 696k buffers

    What type of memory are you using and what is your DVT set to?

    Justin.
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