Re: [patch] paravirt: VDSO page is essential

Andi Kleen
2007-03-05T13:59:20Z

On Mon, Mar 05, 2007 at 02:48:54PM +0100, Ingo Molnar wrote:
>
> * Andi Kleen <ak@suse.de> wrote:
>
> > The problem is not the syscall instruction, but some problem with the
> > way the vDSO mapping is set up with CONFIG_PARAVIRT that broke older
> > glibc.
>
> the problem is that CONFIG_PARAVIRT silently turns off
> CONFIG_COMPAT_VDSO, which of course breaks 'old' glibc. This too is a
> must-have fix for v2.6.21.

We seem to have different definitions of must-have.

I think we would need to have a paravirt ops callback to decide this
first. But it doesn't look critical to me anyways.

-Andi