linux-kernel - Re: [PATCHv2 2/9] KVM: Expose a version 2 architectural PMU to a guests

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Message-ID: <1320675725.18053.40.camel@twins>
Date:	Mon, 07 Nov 2011 15:22:05 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Gleb Natapov <gleb@...hat.com>
Cc:	kvm@...r.kernel.org, avi@...hat.com, mtosatti@...hat.com,
	linux-kernel@...r.kernel.org, mingo@...e.hu,
	acme@...stprotocols.net, Frederic Weisbecker <fweisbec@...il.com>
Subject: Re: [PATCHv2 2/9] KVM: Expose a version 2 architectural PMU to a
 guests

On Thu, 2011-11-03 at 14:33 +0200, Gleb Natapov wrote:
> @@ -35,6 +35,7 @@ config KVM
>         select KVM_MMIO
>         select TASKSTATS
>         select TASK_DELAY_ACCT
> +       select PERF_EVENTS 

Do you really want to make that an unconditional part of KVM? I know we
can't currently build x86 without perf due to that hw breakpoint
trainwreck, but people were actually wanting to solve that.


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