Date: Sat, 10 Jul 2010 12:37:12 -0500 From: Alan Cox <alan.l.cox@gmail.com> To: Markus Gebert <markus.gebert@hostpoint.ch> Cc: freebsd-stable@freebsd.org, John Baldwin <jhb@freebsd.org> Subject: Re: 8.1-RC2 - PCI fatal error or MCE triggered by USB/ehci on Sun X4100M2? Message-ID: <AANLkTinhQq9V8qIlD68l7LRLf1P5Iz5Kq5XDuIYzLOim@mail.gmail.com> In-Reply-To: <08562D52-02AA-46CF-BFCD-00D0A3C4DC34@hostpoint.ch> References: <6B57591F-9FA2-45EB-825F-1DB025C0635D@hostpoint.ch> <201007091603.31843.jhb@freebsd.org> <08562D52-02AA-46CF-BFCD-00D0A3C4DC34@hostpoint.ch>
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On Fri, Jul 9, 2010 at 6:53 PM, Markus Gebert <markus.gebert@hostpoint.ch>wrote: [snip] > > Yes, this hardware comes from Sun directly, but getting Sun (/Oracle) > support for this issue is gonna be tough. FreeBSD is unsupported, and in a > short test we couldn't reproduce the problem with a Linux kernel. While I > agree that a hardware issue has always been and still is a possibility to be > considered, the fact that we tested this on two machines remains as well as > the fact that 6.x, 7.x do not show the behavior. Another possibility is of > course, that the X4100 is prone to such issues and somehow 6.x and 7.x have > workarounds we're not aware of or just do something different in way so that > this issue does not get triggered. > > 8.1 is our first release to have the driver for configuring and reporting machine check exceptions enabled by default. Prior to 8.1, you had to explicitly enable the driver at boot time. Alan
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