MCE on AMD64

[dwhite at gumbysoft.com (Doug White)]

On Sun, 27 Feb 2005, Takeharu KATO wrote:

> Hi
>
> Thank you for your response.
> > There is little or no MCE support in either i386 or amd64 kernels.  The code
> > in i386 has never even been tested, because CR4.MCE was never actually turned
> > on.
> >
> Appearantly, my AMD64 box turn on MCE feature in the CPU.
> I will start to try to write MCE feature support functions.

Make sure you test your code on a Rioworks HDAMA-based AMD64 if you get
the chance. I turned on MCE on our 2.4.25 Linux i386 kernels and they
trapped during the boot.  Apparently there's something goofy with that
board (or Opteron 244 processors?) and MCE.

-- 
Doug White                    |  FreeBSD: The Power to Serve
dwhite_(_at_)_gumbysoft_(_dot_)_com          |  www.FreeBSD.org