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

[Dag-Erling Smørgrav]

Attilio Rao <attilio at 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 Smørgrav - des at des.no