Hi all,

There's not much improvements this week. I've been
working on research how to properly save and restore
userspace windows. It seems that I need to make userspace
window traps preemptible. However, it will be best to
have very fast, non-preemptible handler when it's possible
(eg. when the stack is mapped on the MMU) and fall back
to preemptible one when page fault will occur. I'm
now working together with Jakub J. to solve that problem.

Other things done:
* many uspace/lib/c/arch/sparc32 fixes and improvements.
* fixed bug in userspace context_set()
* started working on kernel timer driver

Things to do next week:
* Implement clever solution for userspace window trap
  handlers

Regards,
Jakub

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