[Bug 222234] head -r323246 aarch64 (Pine64+ 2GB) boot time context, sometimes: acquiring blockable sleep lock with spinlock or critical section held

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=222234

--- Comment #7 from Mark Millard <markmi at dsl-only.net> ---
One of the two patches had a variant
checked-in at -r324207: the one to
allow non-debug kernel's to boot.
(-r324207 did not use the just-"ish"
dsb variant and I've not tested the
change. But I expect that it was a
fix.)

This still leaves the identcpu.c's sev
instruction not having a dsb form
of memory barrier before it (which is
what ARM documents as always
recommended before sev).

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