Re: X15 alpha release: as fast as TUX but in user space (fwd)

Gregory Maxwell
2001-05-03T15:45:11Z

On Thu, May 03, 2001 at 05:44:36PM +1000, Keith Owens wrote:
> On 03 May 2001 09:13:00 +0200,
> kaih@khms.westfalen.de (Kai Henningsen) wrote:
> >pavel@suse.cz (Pavel Machek) wrote on 30.04.01 in <20010430104231.C3294@bug.ucw.cz>:
> >
> >> PS: Hmm, how do you do timewarp for just one userland appliation with
> >> this installed?
> >
> >1. What on earth for?
>
> Y10K testing :)
>
> >2. How do you do it today, and why wouldn't that work?
>
> LD_PRELOAD on a library that overrides gettimeofday(). I can see no
> reason why that would not continue to work. What would stop working
> are timewarp modules that intercepted the syscall at the kernel level
> instead of user space level.

It would just have to be done a differnt way.. For those applications you
make a differnt magic page and redirect them there.