From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Zijlstra Subject: Re: [PATCH 2/4] perf: Allow guest PEBS for KVM owned counters Date: Fri, 30 May 2014 09:31:53 +0200 Message-ID: <20140530073153.GA20167@laptop.programming.kicks-ass.net> References: <1401412327-14810-1-git-send-email-andi@firstfloor.org> <1401412327-14810-3-git-send-email-andi@firstfloor.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: gleb@kernel.org, pbonzini@redhat.com, eranian@google.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Andi Kleen To: Andi Kleen Return-path: Content-Disposition: inline In-Reply-To: <1401412327-14810-3-git-send-email-andi@firstfloor.org> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org On Thu, May 29, 2014 at 06:12:05PM -0700, Andi Kleen wrote: > From: Andi Kleen > > Currently perf unconditionally disables PEBS for guest. > > Now that we have the infrastructure in place to handle > it we can allow it for KVM owned guest events. For > the perf needs to know that a event is owned by > a guest. Add a new state bit in the perf_event for that. > This doesn't make sense; why does it need to be owned?