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    SubjectRe: [PATCH] Updated Documentation/kernel-parameters.txt (resent, v3)
    Dear diary, on Sat, Nov 23, 2002 at 04:17:08PM CET, I got a letter,
    where GertJan Spoelman <kl@gjs.cc> told me, that...
    > Hello Petr,

    Hello,

    > Nice work.
    > Can you add/change the comments for the mem and mem=exactmap parameters.
    > The mem parameter doesn't behave in the same manner as it did before
    > 2.4.19/20, I think it changed somewhere in the 2.4.19-pre series.
    > On an old Compaq 2500 with 320Mb memory the following line used to work :
    > append="mem=320M"
    > now I have to use:
    > append="mem=exactmap mem=640K@0 mem=319M@1M"
    > to get the kernel to see all the memory.
    > On later kernels if I use mem=320M it only sees 16Mb, this is also true for
    > 2.5.44 (probably true for all the 2.5.x kernels) which I tried on that box.
    > I don't know if it's only something specific for that box and maybe not
    > necessarily true for other systems which have to use the mem parameter.
    > To me it looks like the mem parameter can now only be used to specify less
    > memory then the kernel actually recognizes.

    Huh.. That could be some bug actually.. try to report this in a separate mail
    with some attractive subject ;-).

    > Also can you add how to use the mem=exactmap parameter, it says now that such
    > lines can be constructed based on BIOS output or other requirements, that
    > doesn't tell me how such a line should look like, I only found out how to use
    > it by searching through posts on lkml, maybe you can add the above append
    > lines as an example.

    Thanks for the idea, done.

    --

    Petr "Pasky" Baudis
    .
    weapon, n.:
    An index of the lack of development of a culture.
    .
    Public PGP key && geekcode && homepage: http://pasky.ji.cz/~pasky/
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