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Date: Sun, 12 Sep 2010 22:32:58 +0200
From: Ingo Molnar <mingo@elte.hu>
To: Pavel Machek <pavel@ucw.cz>
Cc: Avi Kivity <avi@redhat.com>, Pekka Enberg <penberg@cs.helsinki.fi>,
        Tom Zanussi <tzanussi@gmail.com>,
        Fr?d?ric Weisbecker <fweisbec@gmail.com>,
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        Peter Zijlstra <peterz@infradead.org>,
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        linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: disabling group leader perf_event
Message-ID: <20100912203258.GC16751@elte.hu>
References: <4C84D77B.6040600@redhat.com>
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* Pavel Machek <pavel@ucw.cz> wrote:

> On Sun 2010-09-12 20:48:43, Ingo Molnar wrote:
> > 
> > * Avi Kivity <avi@redhat.com> wrote:
> > 
> > >  On 09/12/2010 08:46 AM, Pavel Machek wrote:
> > > >  1- Most (least abstract) specific code: a block of bytecode in the form
> > > >     of a simplified, executable, kernel-checked x86 machine code block -
> > > >     this is also the fastest form. [yes, this is actually possible.]
> > > >Well... if we want to be a bit x86-entric.... can we just reuse ACPI
> > > >interpretter?
> > > 
> > > I hope this was a joke, ACPI won the academy awards for ugliness, 
> > > ..., bad specification, non-generality, and 
> 
> As did i386 instruction set :-).

Are you kidding? The i386 instruction set may be ugly, but it's 
implemented in hardware, which has obvious upsides.

The ACPI AML code is just plain ugly.

	Ingo