Re: [uml-devel] Re: Needed arch_copy_tls? Not done by dup_task_struct?

[Blaisorblade <blaisorblade@yahoo.it>]

On Thursday 19 January 2006 00:38, Jeff Dike wrote:
> On Wed, Jan 18, 2006 at 08:53:29PM +0100, Blaisorblade wrote:
> > I looked at my patch's comment and noticed that arch_copy_tls, your
> > introduction, shouldn't indeed be needed, because dup_task_struct should
> > do that (it copies the whole task_struct, and it seems that arch_thread
> > is included in that blob rather than pointed too).
> >
> > I'm fairly puzzled at that. Have you any idea on this?
>
> I wondered about that, too, but hadn't bothered looking into it yet.  I'm
> suspicious that we initialize p.thread with INIT_THREAD, which would
> obviously wipe it out.

> > Also, since you have a good test FS (Fedora), can I send you the updated
> > versions I put out / can you test them? My Sarge isn't good any more,
> > likely because glibc was updated by apt-get, and it works well with the
> > LDT fallback.

> I have - they are on my patches page.  I added back the
> user_desc -> modify_ldt_t thing because I don't have a user_desc here.

I'm fixing this by copying the structure definition into sysdep/tls.h header 
files with a different name and using that one in os-Linux/tls.c.

> Other than that (and the O_FORCE succeeded message), it seems to be working
> fine.

> > I've just uploaded 2.6.15-bs1-tls for people to test.

> What I grabbed is what was there this morning.  If you changed anything
> significant, let me know, and I'll pull again.
I'll notify you when needed.
-- 
Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!".
Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894)
http://www.user-mode-linux.org/~blaisorblade

		
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