How best get rid of SELinux?

[Mike McCarty]

Alan M. Evans wrote:
> On Fri, 2007-09-21 at 13:37 -0500, Mike McCarty wrote:
> 
> 
>>Usually[*], the NOP is the smallest instruction, so it may be used
>>to nullify other instructions, all of which are made to be multiples
>>of the size of a NOP. A jump type instruction needs at least
>>an opcode and an address (even if only relative), so is usually
>>larger than a NOP. On some machines, some short form of jump
>>may be just one machine word (a couple of architectures come
>>to mind, like the Z8000 for instance).
>>
>>[*] I can't think of a counter example, and it wouldn't make sense
>>for it to be otherwise.
> 
> 
> The counter-example is a processor I used some time ago that included a
> short jump instruction that was one word in length. That is, the JMP
> instruction included the jump distance. I don't know if recent x86 has
> such a thing.

That is not a counter example. A counter example would be a
machine on which the NOP[*] is larger than another instruction.
That wouldn't make sense. I pointed out that I know of two
architectures offhand which have a one-word-long short
relative jump, and even mentioned the Z8000 as an example.

[*] I'm not referring to "effective NOP" like

jump-using-largest-possible-address-mode-to address-of-next-instruction

Mike
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