From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [PATCH 6/9] perf, intel: Use GO/HO bits in perf-ctr Date: Tue, 04 Oct 2011 11:21:37 +0200 Message-ID: <4E8AD021.1030602@redhat.com> References: <1317649795-18259-1-git-send-email-gleb@redhat.com> <1317649795-18259-7-git-send-email-gleb@redhat.com> <4E89CF73.4020208@redhat.com> <20111003154113.GB3225@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, joerg.roedel@amd.com, mingo@elte.hu, a.p.zijlstra@chello.nl To: Gleb Natapov Return-path: In-Reply-To: <20111003154113.GB3225@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org On 10/03/2011 05:41 PM, Gleb Natapov wrote: > > Would be better to calculate these when the host msrs are > > calculated, instead of here, every vmentry. > > > For arch PMU v2 and greater it is precalculated. For v1 (which is almost > non existent, even my oldest cpu with VMX has v2 PMU) I am not sure it > will help since we need to copy information to perf_guest_switch_msr > array anyway here. > Okay. -- error compiling committee.c: too many arguments to function