Re: [PATCH] swapcontext vs libpthread, round 9

[Joerg Sonnenberger <joerg%britannica.bec.de@localhost>]

On Thu, Sep 06, 2012 at 03:26:13AM +0000, YAMAMOTO Takashi wrote:
> hi,
> 
> > On Fri, Aug 31, 2012 at 04:45:48PM +0000, Emmanuel Dreyfus wrote:
> >> After a few round behind the scenes with portmasters (Hi Nick, hi Martin!),
> >> here is the latest incarnation of swpacontext vs libpthread patch.
> >> 
> >> If there are no concerns left, I plan to commit within 2 days.
> > 
> > I still object to adding _UC_TLSBASE to ports that don't need it. This
> > can be done entire in userland, so no kernel change should be required
> > or done.
> > 
> > Joerg
> 
> can you elaborate a bit more?
> 
> implement the entire setcontext in userland where possible?
> 
> or something like the following?
> 
>       setcontext(ucp)
>       {
>       #ifdef(__i386__)
>               ucp->uc_mcontext._mc_tlsbase = __lwp_getprivate_fast();
>       #else
>               ...
>       #endif
>               return sys_setcontext(ucp);
>       }

The latter, essentially.

Joerg