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    SubjectRe: [patch] tune vmalloc size
    --Andi Kleen <ak@muc.de> wrote (on Wednesday, September 15, 2004 15:29:53 +0200):

    > Ingo Molnar <mingo@elte.hu> writes:
    >
    >> there are a few devices that use lots of ioremap space. vmalloc space is
    >> a showstopper problem for them.
    >>
    >> this patch adds the vmalloc=<size> boot parameter to override
    >> __VMALLOC_RESERVE. The default is 128mb right now - e.g. vmalloc=256m
    >> doubles the size.
    >
    > Ah, Karsten Keil did a similar patch some months ago. There is
    > clearly a need.
    >
    > But I think this should be self tuning instead. For a machine with
    > less than 900MB of memory the vmalloc area can be automagically increased,
    > growing into otherwise unused address space.
    >
    > This way many users wouldn't need to specify weird options. So far
    > most machines still don't have more than 512MB.

    It already does that, IIRC.

    M.

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