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    SubjectRe: [PATCH] Add CONFIG for -mregparm=3
    On Wed, Jan 14, 2004 at 08:25:06PM +0100, Adrian Bunk wrote:
    > On Wed, Jan 14, 2004 at 10:35:56AM +0100, Andi Kleen wrote:
    > >...
    > > I think the popular modules like nvidia or ATI could be fixed
    > > relatively easily. They usually consist of a glue layer with source and a
    > > binary blob that is only called from the glue layer. Basically all you
    > > have to do is the mark the prototypes for the binary blob in the glue layer
    > > as "asmlinkage". In addition this can be done without any ifdefs
    > > because asmlinkage does the right thing on a non regparm kernel.
    > >
    > > Of course true binary only modules without glue layer would be more
    > > difficult, but for those the vendors just have to recompile. Conceivable
    > > it would be possible to write a glue layer even for them.
    > >...
    >
    > Did I miss Linus announcing a stable ABI between kernel versions?
    >
    > If some binary module vendor tries to support more than one kernel
    > version it's his problem - this is nothing that is officially supported
    > by the Linux kernel.

    agreed.

    this is the sort of stuff that shouldn't be a config option, it
    exercises new paths in gcc as well, _all_ the userbase has to use it, or
    it's not worth the risk/pain IMHO.
    -
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