Hi!
> while looking for loop places to apply cpu_relax() to, I found the
> following gems:
>
> arch/i386/kernel/crash.c/crash_nmi_callback():
>
> /* Assume hlt works */
> halt();
> for(;;);
>
> return 1;
> }
>
> arch/i386/kernel/doublefault.c/doublefault_fn():
>
> for (;;) /* nothing */;
> }
>
> Let's assume that we have a less than moderate fan failure that causes
> the CPU to heat up beyond the critical limit...
> That might result in - you guessed it - crashes or doublefaults.
> In which case we enter the corresponding handler and do... what?
> Exactly, we accelerate the CPUs happy march into bit heaven by letting it
...
> Am I completely missing something here?
Yes. You are missing that modern hw already protects itself. See my blog on planet.kernel.org.
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64 bytes from 195.113.31.123: icmp_seq=28 ttl=51 time=448769.1 ms
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