On 18/08/2011 12:45, Richard Weinberger wrote:

quoted

You might try the patch posted in
http://thread.gmane.org/gmane.linux.uml.devel/12158
(I don't have the environment to test it anymore)

Cool, saving the FP registers explicitly on each task switch solves the
issue.
Do you know why Ingo's patch was never applied?
Ingo?

I don't know why it was never applied, I guess it just slipped between 
the cracks. I've been using the patch for several months back in 2009, 
and it reliably fixed the observed problems.

My employer switched from UML to QEMU/KVM since then, so I eventually 
lost interest.

Cheers,
Ingo