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SubjectRe: [PATCH] ftrace: use only 5 byte nops for x86
Ingo Molnar wrote:
>>>
>>> TODO: Examine the cpuid to determine the nop to use.
>>>
>> Don't think that will help in general. qemu claims its a Pentium II.
>
> ok. I've applied Steve's patch as it's a good bugfix. The extra paranoia
> about faulting on 0x90 seems excessive but doesnt hurt ;-)
>

I think what we need to do is to test the NOPL instruction and create a
Linux-specific CPUID bit for it. I'll do that and submit to tip:x86/cpu.

-hpa


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