Re: svn commit: r198868 - in head/sys: amd64/amd64 i386/i386

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From
Dag-Erling Smørgrav <des@des.no>
Date
4 Nov 2009 15:25:27
Subject
Re: svn commit: r198868 - in head/sys: amd64/amd64 i386/i386
Message-ID
863a4ugvmi.fsf@ds4.des.no


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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
--
Dag-Erling Smrgrav - des@des.no


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