4947394 (x86: if a CPU fails to start, machine hangs)
        in progress, bug

What's the state of bugs, what kind of additional information is available
for these bugs (especially 4947394) that isn't visible on bugs.opensolaris.org?

4947394 should be closed, as the code in start_other_cpus() is already
skipping CPUs that fail to start.  It didn't used to do that before Dan Mick's
putback of 4951784.  So I've closed 4947394 as a dup.

- boot with kmdb, use F1-A to break into kmdb while the startup attempt for the
  second core is hanging, and simply ":c" continue:
  system startup continues and both cpu cores are online

  (why does dropping into kmdb fix this problem?)

What does ::cpuinfo -v show when you drop in kmdb in this case?

- Andrei
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