Date: Wed, 04 Nov 2009 16:25:25 +0100 From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no> To: Attilio Rao <attilio@FreeBSD.org> 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 Message-ID: <863a4ugvmi.fsf@ds4.des.no> In-Reply-To: <200911040132.nA41WxtQ012750@svn.freebsd.org> (Attilio Rao's message of "Wed, 4 Nov 2009 01:32:59 %2B0000 (UTC)") References: <200911040132.nA41WxtQ012750@svn.freebsd.org>
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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
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