All my amd64 problems appear to be KSE

[Daniel Eischen]

On Sun, 6 Jun 2004, Tim Robbins wrote:

> On Sat, Jun 05, 2004 at 12:06:01PM -0400, Daniel Eischen wrote:
> > 
> > Is it something recent that broke?  Last I knew, libpthread was working
> > on amd64 with mozilla & kde.
> 
> KDE works flawlessly. Mozilla almost works, but suffers from the "mysterious
> vanishing" I mentioned.
> 
> If you want to reproduce the problems, either:
> (a) Fire up gnome-terminal, open a few new tabs, close them again, repeat
>     until it crashes. It often takes only 2-3 invocations of "Open Tab"
>     to make it happen.
> (b) Load a handful of MP3 files into XMMS, click the next/previous
>     track buttons once every few seconds until it crashes.
> 
> Everything seems to work fine if I build libpthread with SYSTEM_SCOPE_ONLY
> (at least it hasn't crashed so far.) My current guess is that there's a
> bug in context manipulation or signals. I initially thought we weren't
> saving enough FPU context in _amd64_save_context, but adding an fxsave
> in there didn't help.

If KDE & mozilla work, then context switching would work (unless they
are specifically creating system-scope threads, but I don't think that
is the case).  I just ran a simple test case on sledge that created a
few cpu bound threads doing FPU operations and it didn't crash.

-- 
Dan Eischen