John Baldwin 1432aa0c5e Add a new kernel option RESTARTABLE_PANICS. If this option is present,
then one can restart from a panic by resetting the panicstr variable to
NULL.  This commit conditionalizes the previously committed functionality
on this variable.  It also removes the __dead2 attribute from the panic()
function so that when one continues from a panic() the behavior will
be predictable.
2001-08-23 20:32:21 +00:00
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