Clean up the SMP AP bootstrap and eliminate the wretched idle procs.

- We now have enough per-cpu idle context, the real idle loop has been
revived (cpu's halt now with nothing to do).
- Some preliminary support for running some operations outside the
global lock (eg: zeroing "free but not yet zeroed pages") is present
but appears to cause problems.  Off by default.
- the smp_active sysctl now behaves differently. It's merely a 'true/false'
option.  Setting smp_active to zero causes the AP's to halt in the idle
loop and stop scheduling processes.
- bootstrap is a lot safer.  Instead of sharing a statically compiled in
stack a number of times (which has caused lots of problems) and then
abandoning it, we use the idle context to boot the AP's directly.  This
should help >2 cpu support since the bootlock stuff was in doubt.
- print physical apic id in traps.. helps identify private pages getting
out of sync.  (You don't want to know how much hair I tore out with this!)

More cleanup to follow, this is more of a checkpoint than a
'finished' thing.

1 files changed, 1 insertions, 2 deletions

diff --git a/sys/sys/smp.h b/sys/sys/smp.h
index f433b2f..276b838 100644
--- a/sys/sys/smp.h
+++ b/sys/sys/smp.h
@@ -6,7 +6,7 @@
  * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
  * ----------------------------------------------------------------------------
  *
- * $Id: smp.h,v 1.24 1997/08/24 20:17:05 smp Exp smp $
+ * $Id: smp.h,v 1.29 1997/08/24 20:33:24 fsmp Exp $
  *
  */
 
@@ -100,7 +100,6 @@ extern int			cpu_num_to_apic_id[];
 extern int			io_num_to_apic_id[];
 extern int			apic_id_to_logical[];
 extern u_int			all_cpus;
-extern u_int			SMP_prvpt[];
 extern u_char			SMP_ioapic[];
 
 /* functions in mp_machdep.c */