Subject: Re: [RFC PATCH] powerpc: Emulate nop too

From: Ananth N Mavinakayanahalli <[email-masked]>
Date: Fri, 28 May 2010 09:22:05 +0530

On Thu, May 27, 2010 at 03:22:45PM -0500, Kumar Gala wrote:
> 
> On May 27, 2010, at 9:12 AM, Ananth N Mavinakayanahalli wrote:
> 
> > Hi Paul,
> > 
> > While we are at it, can we also add nop to the list of emulated
> > instructions?
> 
> Dare I ask why we need to emulate nop?

We are close to getting userspace probes done. Some userspace apps
that've gained 'markers' from DTrace or elsewhere, are being enabled to
expose those in through debuginfo on Linux and the underlying instruction
there is a nop.

Ananth