Re: I'd have assumed that their test code suite would catch something like that...
I think it's obviously a fairly trivial and straightforward exercise for the Test Dept boffins at AMD to semi-automatically create
This isn't a bug that's caused by "Execute instruction X followed by instruction Y and get the wrong results".
It's a very precise timing bug between an NMI and the processor being in a certain state. These corner cases are *very* hard to find and reproduce.
As several other commentards have noted, CPUs nowadays are *very* complex and testing every state is almost impossible.
Biting the hand that feeds IT
