Messages in this thread | | | Date | Fri, 8 Aug 2008 20:51:23 -0400 (EDT) | From | Steven Rostedt <> | Subject | Re: [PATCH 0/5] ftrace: to kill a daemon |
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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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