Re: [BUG] x86 kenel won't boot under Virtual PC

[H. Peter Anvin]

Ingo Molnar wrote:
> * Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> >  - Move the optimized nop definitions (K7_NOPx etc) to the only place that 
> >    cares - asm/x86/kernel/alternative.c. When we do things _dynamically_, 
> >    it can actually make sense to pick a nop more precisely, but for this 
> >    whole static thing it's just a pain.
> >
> > IOW, if it actually _worked_ reasonably, I wouldn't care. But clearly 
> > it doesn't. And once it's not working reasonably, it should be fixed.
>
> yes - we had 3-4 tries already and while it looked worthwile initially 
> it's clearly not showing signs of getting more robust and whatever 
> benefits there might be slightly better NOPs is dwarved by all these 
> robustness problems. Peter?

There is already a fix for this based on a first-principles test in tip.

	-hpa


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