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Subject: Re: disabling group leader perf_event
From: Peter Zijlstra <peterz@infradead.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: Pekka Enberg <penberg@kernel.org>, Paul Mackerras <paulus@samba.org>,
        Avi Kivity <avi@redhat.com>, Pekka Enberg <penberg@cs.helsinki.fi>,
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Date: Wed, 08 Sep 2010 09:30:48 +0200
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On Wed, 2010-09-08 at 08:44 +0200, Ingo Molnar wrote:
> Thus instructions like 'mov (%rax), ...' would be handled by not 
> allowing them, only addresses which do not change from execution
> state.

> Do you know some interesting usecase that would be excluded via such 
> address restrictions? 

my_array[i] = foo;

usually ends up wanting to do something with a register offset.