Re: [PATCH 00/13] jump label v9

From: H. Peter Anvin
Date: Tue Jun 15 2010 - 13:29:06 EST

On 06/15/2010 10:13 AM, David Miller wrote:
> From: Jason Baron <jbaron@xxxxxxxxxx>
> Date: Tue, 15 Jun 2010 10:28:11 -0400
>> For example, the reason I have it in the code is b/c x86 determines
>> the best no-op at run-time. Are other architectures going to have to
>> require this kind of functionality. Or like sparc, are we going to
>> be able to generally hard-code the nops on non-x86 at compile-time?
> I think most architectures will use a constant nop sequence, in fact
> x86 is the only one I can think of that needs variable nop sequences.

One could potentially see that for other variable-length-instructions
architectures, e.g. S390, m68k or ARM/Thumb2 as well.

For fixed-length-instructions architectures, well, it shouldn't be an issue.

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