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    SubjectRe: Memory detection problem in 2.4.19-rc2
    On Sat, 20 Jul 2002, Leonardo Gomes Figueira wrote:

    > Hi,
    > i have a Toshiba K6-2 450 notebook with 32MB RAM onboard plus an 256MB chip.
    > I use kernel 2.4.18 with the mem param on the boot (mem=288M) and it
    > works fine. (Without the mem param it only detects 32MB).
    > I've been testing 2.4.19-preX (8,9,10 maybe others before, i don't
    > remember) and 2.4.19-rcX (1,2) but in this releases it don't detect more
    > than 32MB even with the mem param. I didn't test in 2.4.19-rc3 yet but i
    > read the changelog and didn't see any change in this area but i can test
    > if it helps.

    It seems that the change Christoph introduced (from Red Hat's tree) in the
    lines around 810 (line number in -rc3) in arch/i386/kernel/setup.c didn't
    consider the case that someone want's to _in_crease the size of the memory
    by using the "mem=" parameter.

    It's the following Changeset:

    <-- snip -->

    Changeset details for 1.383.2.25

    ChangeSet@1.383.2.25 2002-04-15 23:18:40-03:00
    all diffs
    [PATCH] mem= command lines fixes.
    Another patch from Red Hat's tree:
    mem= command-line adapts itself to existing e820 values.
    without this patch mem=xxxM ignores bios-reserved areas and uses
    them as RAM. This patch makes the kernel skip these areas
    arch/i386/kernel/setup.c@1.38 2001-04-05

    <-- snip -->

    > Thanks,
    > Leo



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