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    SubjectRe: Special place for tird-party modules.
    Date
    On Wednesday 28 April 2004 21.18, Valdis.Kletnieks@vt.edu wrote:
    > On Wed, 28 Apr 2004 18:14:24 +0200, Goran Cengic <cengic@s2.chalmers.se>
    said:
    > > I do understand that many developers have several kernel version
    > > installed at the same time but is it possible to share between the
    > > versions at least the modules that are not developed as the part of the
    > > kernel?
    > >
    > > If I'm missing something cruical please point it out to me.
    >
    > What you're missing is the reason for modversions to exist - the fact that
    > the kernel API *does* change between releases, and even within the same
    > source tree (UP vs SMP builds, for instance). If we supported what you're
    > suggesting, then the following *will* happen:
    >
    > 1) Binary module for 2.6.N is released that uses an API that takes 5
    > parameters. 2) 2.6.N+1 comes out, and said API has another parameter added
    > (see the recent tweak-fest for elf_map() for an actual example).
    > 3) User loads old binary into kernel.
    > 4) Kernel OOPs when it dereferences the non-existent 6th parameter that
    > wasn't passed by the un-updated binary.

    Ok, I get it :) Thank you!

    /Goran

    ----------------------------------
    Goran Cengic
    mailto:cengic@s2.chalmers.se
    ----------------------------------
    Have a nice day :)
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