Re: [PATCH] Gerd Hoffman's move-vsyscall-into-user-address-range patch

Adrian Bunk
2006-05-22T19:14:23Z

On Mon, May 22, 2006 at 10:46:33AM -0700, Linus Torvalds wrote:
>...
> > is it really a big problem to add "vdso=0" to the long list of
> > requirements you need to run a 2.6 kernel on an old distribution (or to
> > disable CONFIG_VDSO)? FC1 wasnt even 2.6-ready, it used a 2.4 kernel!
>
> Backwards compatibility is absolutely paramount. Much more important than
> just about anything else.

Unless I'm misunderstanding this issue, no official glibc release was
ever affected which makes the probability of other people being affected
pretty small.

And this issue is about backwards compatibility only insofar, that it
works around a bug in some ancient cvs versions of glibc.

Is it a new policy that the kernel mustn't break any buggy userspace
code?

> Linus

cu
Adrian

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