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From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no>
To: Attilio Rao <attilio@freebsd.org>
References: <200911040132.nA41WxtQ012750@svn.freebsd.org>
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Date: Wed, 04 Nov 2009 17:09:05 +0100
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	(Attilio Rao's message of "Wed, 4 Nov 2009 17:06:00 +0100")
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Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org,
	src-committers@freebsd.org
Subject: Re: svn commit: r198868 - in head/sys: amd64/amd64 i386/i386
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Attilio Rao <attilio@freebsd.org> writes:
> Dag-Erling Sm=C3=B8rgrav <des@des.no> writes:
> > According to the reference you gave, OpenSolaris has a workaround for
> > this issue.  Perhaps we should adopt it?
> IIRC, based on what I readed on-line, it could be still a WARNING msg,
> but I didn't double-check for it.

Uh, apparently, it can be worked around with an additional lfence
instruction...  See the first couple of comments on that bugzilla page
you linked to.  If the cost is too high, we could make it conditional on
"options BROKEN_OPTERON_E" or something.

DES
--=20
Dag-Erling Sm=C3=B8rgrav - des@des.no