Re: [PATCH 0/5] ftrace: to kill a daemon

[Steven Rostedt]

On Fri, 8 Aug 2008, Jeremy Fitzhardinge wrote:

> Steven Rostedt wrote:
> > I wish we had a true 5 byte nop. 
> 
> 0x66 0x66 0x66 0x66 0x90
> 

But I quote you:

> Unfortunately, aside from P6_NOP5, none of the standard asm/nops.h nops 
> are suitable.  Something like "0x66, 0x66, 0x66, 0x66, 0x90" would work
> everywhere, but its possible putting more than 3 prefixes on the 
> instruction will kick the decoder into a slow path, which may have a 
> noticable effect.

I guess the next step is to test if it is slow.

-- Steve

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