On Sat, Jan 14, 2006 at 07:43:27PM +0100, Andi Kleen wrote:
> On Saturday 14 January 2006 07:52, Dave Jones wrote:
> > Andi,
> > Sometime in the last week something was introduced to Linus'
> > tree which makes my dual EM64T go nuts when X tries to start.
> > By "go nuts", I mean it does various random things, seen so
> > far..
> > - Machine check. (I'm convinced this isn't a hardware problem
> > despite the new addition telling me otherwise :)
>
> Normally it should be impossible to cause machine checks from software
> on Intel systems.
-git7+ is the only time I've ever seen one on this box.
> > - Reboot
> > - Total lockup
> > - NMI watchdog firing, and then lockup
> >
> > I've tried backing out a handful of the x86-64 patches, and
> > didn't get too far, as some of them are dependant on others,
> > it quickly became a real mess to try to bisect where exactly it broke.\
>
> Shouldn't be too bad - i did a binary search for something else and it worked
> pretty well.
The patches reverted, but I hit problems like modprobe segfaulting during
boot, or reboots during APIC init.
> > Any ideas for potential candidates to try & back out ?
> Does it work when you revert all x86-64 changes?
-git6 which was the last one not to include the x86-64 changes boots and runs fine.
I'll try a latest -git with x86-64 backed out when I get a chance.
Dave
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