[Bug 217994] Kernel panic in native_lapic_setup with 12-CURRENT on EC2 machine

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=217994

--- Comment #14 from Andriy Gapon <avg at FreeBSD.org> ---
(In reply to Sylvain Garrigues from comment #13)
Thanks! I suspect that the problem is with BEXTR instruction that is available
on Haswell, but does not seem to provided by (at least some) EC2 instances. 
Not sure if it requires any support from the hypervisor or if it's a problem
with underlying hardware not supporting the instruction.
So, I bet on your guess from comment #9.

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