PERFORCE change 63396 for review

[John Baldwin]

http://perforce.freebsd.org/chv.cgi?CH=63396

Change 63396 by jhb at jhb_tibook on 2004/10/19 21:58:24

	Update.

Affected files ...

.. //depot/projects/smpng/sys/notes#21 edit

Differences ...

==== //depot/projects/smpng/sys/notes#21 (text+ko) ====

@@ -33,6 +33,10 @@
   - Untested
 - Don't allow kthreads to get signalled and do bad things
   - Untested
+- Change amd64 to use [ls]fence instructions for memory barriers.
+  - Untested (and no hardware, maybe peter can test)
+- Turn off the ipiwakeups in 4BSD since the currently implementation can
+  lead to IPI deadlocks
 - Add a kproc API that does what kthread does right now
 - Add a real kthread API that creates just another thread inside of a kproc
   - Figure out what needs to be done to make a new kthread.. should each