From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752637Ab2CLK3S (ORCPT ); Mon, 12 Mar 2012 06:29:18 -0400 Received: from damascus.uab.es ([158.109.168.135]:34856 "EHLO damascus.uab.es" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751293Ab2CLK3O (ORCPT ); Mon, 12 Mar 2012 06:29:14 -0400 Date: Mon, 12 Mar 2012 12:29:41 +0100 From: Davidlohr Bueso Subject: Re: [PATCH] KVM: VMX: add tracepoint for vpids In-reply-to: <4F5DB245.9060205@redhat.com> To: Avi Kivity Cc: Marcelo Tosatti , lkml , KVM Message-id: <1331551781.1334.3.camel@offworld> Organization: GNU MIME-version: 1.0 X-Mailer: Evolution 3.0.3-2 Content-type: text/plain; charset=UTF-8 Content-transfer-encoding: 7BIT X-Spam-Tests: ALL_TRUSTED=-1 X-imss-version: 2.054 X-imss-result: Passed X-imss-scanInfo: M:P L:N SM:0 X-imss-tmaseResult: TT:0 TS:0.0000 TC:00 TRN:0 TV:6.5.1024(18768.006) X-imss-scores: Clean:99.90000 C:2 M:3 S:5 R:5 X-imss-settings: Baseline:3 C:3 M:3 S:3 R:3 (0.5000 0.5000) References: <1331481472.17316.1.camel@offbook> <4F5DB245.9060205@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2012-03-12 at 10:22 +0200, Avi Kivity wrote: > On 03/11/2012 05:57 PM, Davidlohr Bueso wrote: > > From: Davidlohr Bueso > > > > Add a new tracepoint for vpid allocation and freeing associated to all vCPUs. > > > > Why? > We have been using this tracepoint for some time now to help debug vpids and simulating tagged TLB behavior and performance. This gets to be non trivial when working with large amounts of guests and vCPUs. Thanks, Davidlohr