[Bug 260868] possible i386 regression after ce35a3bc852d25cb989bc1f3dc4ddb723d7d5117

From: <bugzilla-noreply_at_freebsd.org>
Date: Sat, 01 Jan 2022 21:17:19 UTC

Mark Johnston <markj@FreeBSD.org> changed:

           What    |Removed                     |Added
                 CC|                            |markj@FreeBSD.org
             Status|New                         |Open

--- Comment #1 from Mark Johnston <markj@FreeBSD.org> ---
I think I see the problem.  We're calibrating using the i8254 timer, and the
corresponding timecounter has a pretty narrow mask so wraparound can occur
multiple times.  I wonder if we should just skip late calibration if the i8254
is the only reference clock.

Could you please show a verbose dmesg from the broken kernel?

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