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SubjectRe: memtest86 on the opteron
FromWarren Togami <>
Date07 Jun 2003 20:44:51 -1000
On Sat, 2003-06-07 at 20:27, Andi Kleen wrote:
> Bryan O'Sullivan <bos@serpentine.com> writes:
> 
> > On Sat, 2003-06-07 at 14:43, Pavel Machek wrote:
> > 
> > > Well, as opteron is i386-compatible, you should be able to simply use
> > > i386 memtest...
> > 
> > It doesn't work.  Crashes and reboots the system shortly after it
> > starts.  The serial console support appears to have bit-rotted, too, so
> > I've not been able to capture an output screen to diagnose the problem.
> 
> The problem is the CPUID handling in memtest86. It does not expect
> the 15 model number on AMD systems. Someone did a patch for it, but
> I don't remember where they put it. Anyways should be easy to fix again
> given the source.
> 

If you find the patch I am interested in it.  Please CC me.

I am guessing that a normal 32bit compiled memtest86 wont be able to
test beyond 4GB of RAM on AMD64?

Warren

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