K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2001-02-05T19:34:25.000000Z
K 7
svn:log
V 525
- Minimize the amount of duplicated code for the PREEMPTION #ifdef, it now
  only covers about 3-4 lines.
- Don't lower the IPL while we are on the interrupt stack.  Instead, save
  the raised IPL and change the saved IPL in sched_lock to IPL_0 before
  calling mi_switch().  When we are resumed, restore the saved IPL in
  sched_lock to the saved raised IPL so that when we release sched_lock
  we won't lower the IPL.  Without this, we would get nested interrupts
  that would overflow the kernel stack.

Tested by:	mjacob

END