K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2007-07-03T18:37:06.000000Z
K 7
svn:log
V 493
Tweak the low-level MI SMP code some:
- Use cpu_spinwait() in the spin loops in stop_cpus(), restart_cpus(), and
  smp_rendezvous_action().
- Remove unneeded acq memory barriers in stop_cpus(), restart_cpus(), and
  smp_rendezvous_action().
- Add an additional synch point in smp_rendezvous() to ensure that all the
  CPUs will always see an up-to-date value of smp_rv_setup_func.

Reviewed by:	attilio
Approved by:	re (kensmith)
Tested on:	alpha, amd64, i386, sparc64 SMP (for several years)

END