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


    On Wed, 6 Jun 2007, Jesse Barnes wrote:

    > On Wednesday, June 6, 2007 3:13 pm Justin Piszcz wrote:
    >> On Wed, 6 Jun 2007, Jesse Barnes wrote:
    >>> On Wednesday, June 6, 2007 3:03 pm Justin Piszcz wrote:
    >>>> Mem: 8039620k total, 7936472k used, 103148k free, 708k
    >>>> buffers Mem: 8039608k total, 969380k used, 7070228k free,
    >>>> 1232k buffers
    >>>>
    >>>> I am curious, why does the patch != the mem=8832M?
    >>>
    >>> I'm not sure... can you post your e820 map from boot and the
    >>> contents of /proc/mtrr? Maybe my patch is trimming off a few too
    >>> many pages, or maybe 8832M isn't quite right and actually ends up
    >>> leaving you with a few uncached pages.
    >>>
    >>> Jesse
    >>
    >> Unless you know of some other way I can capture the output, it only
    >> starts showing the dmesg from [50..] onward.
    >
    > Did you boot the kernel with the 'debug' option? Maybe your dmesg
    > buffer is too small (there's a config option for that iirc).
    >
    > Jesse
    >

    Nope, I booted with only netconsole= options. I have a lot of HW in the
    box and I guess the buffer is too small. Not sure where to change it in
    the kernel. Looking..
    -
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