From mboxrd@z Thu Jan  1 00:00:00 1970
From: Avi Kivity <avi@redhat.com>
Subject: Re: [PATCH 1/3] perf: add context field to perf_event
Date: Thu, 21 Jul 2011 18:59:00 +0300
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Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Frederic Weisbecker <fweisbec@gmail.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
	Ingo Molnar <mingo@elte.hu>,
	"acme@ghostprotocols.net" <acme@ghostprotocols.net>,
	Jason Wessel <jason.wessel@windriver.com>
To: Will Deacon <will.deacon@arm.com>
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On 07/21/2011 06:46 PM, Will Deacon wrote:
> >
> >  This is (and must be) called from a preempt disabled context, no mutexes
> >  around here.
>
> Bah, yes, that is essential if you're dealing with current. Maybe use a
> spinlock instead?

Could work.  Not thrilled about adding it to the kvm hot path, but I 
can't say it will make a measurable impact.

-- 
error compiling committee.c: too many arguments to function