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SubjectRe: [BUG] x86 kenel won't boot under Virtual PC
Ingo Molnar wrote:
> * Linus Torvalds <torvalds@linux-foundation.org> 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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