> sparc is fixed now.

   But if I understand the commit comment correctly only for 
   uniprocessor-configurations?

yes.

i tried an MP kernel once and it failed.  it has been broken
since newlock2 was merged - something is wrong with the
mutex_spin_{enter,exit}() stubs.  turning them off either
explicitly or implicitly via LOCKDEBUG worked but i have not
had a chance to look closer since yamt-idlelwp.


.mrg.