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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>
Date: Wed, 04 Nov 2009 16:25:25 +0100
In-Reply-To: <200911040132.nA41WxtQ012750@svn.freebsd.org> (Attilio Rao's
	message of "Wed, 4 Nov 2009 01:32:59 +0000 (UTC)")
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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:
> Log:
>   Opteron rev E family of processor expose a bug where, in very rare
>   ocassions, memory barriers semantic is not honoured by the hardware
>   itself. As a result, some random breakage can happen in uninvestigable
>   ways (for further explanation see at the content of the commit itself).

According to the reference you gave, OpenSolaris has a workaround for
this issue.  Perhaps we should adopt it?

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