From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andi Kleen Subject: Re: [PATCH 2/4] perf: Allow guest PEBS for KVM owned counters Date: Fri, 30 May 2014 09:03:57 -0700 Message-ID: <20140530160357.GB8876@tassilo.jf.intel.com> References: <1401412327-14810-1-git-send-email-andi@firstfloor.org> <1401412327-14810-3-git-send-email-andi@firstfloor.org> <20140530073153.GA20167@laptop.programming.kicks-ass.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Andi Kleen , gleb@kernel.org, pbonzini@redhat.com, eranian@google.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org To: Peter Zijlstra Return-path: Content-Disposition: inline In-Reply-To: <20140530073153.GA20167@laptop.programming.kicks-ass.net> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org On Fri, May 30, 2014 at 09:31:53AM +0200, Peter Zijlstra wrote: > 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? Please read the complete patch kit -Andi -- ak@linux.intel.com -- Speaking for myself only