[Bug 203166] [wbwd][patch] Stop watchdog timer in attach routine if it is already started

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203166

Xin LI <delphij at FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |delphij at FreeBSD.org

--- Comment #2 from Xin LI <delphij at FreeBSD.org> ---
Please make this one optional via a loader tunable or compile time setting (I
have no strong option with the default and if it helps people, let's enable it
by default).

The problem with doing resets unconditionally in kernel is that if e.g. the
user is using nextboot(8) and the kernel stuck at a later time, there is
nothing that resets the system to recover it to a previously known good state,
and that would defeat a good fraction of legitimate usage of watchdogs.

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