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Date:      Thu, 03 Aug 2017 18:56:17 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 221029] AMD Ryzen: strange compilation failures using poudriere or plain buildkernel/buildworld
Message-ID:  <bug-221029-8-aNl8vK4jSV@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-221029-8@https.bugs.freebsd.org/bugzilla/>
References:  <bug-221029-8@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D221029

--- Comment #50 from Don Lewis <truckman@FreeBSD.org> ---
(In reply to Conrad Meyer from comment #48)
Interesting link.  I've been hearing rumors about this, but this is the fir=
st
detailed info that I've seen.

Speculative execution is one of the things that came to mind with the signal
trampoline issue.  In this case, I would think that speculative execution w=
ould
not get past the ret instruction.

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