Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754593AbXJ3L7G (ORCPT ); Tue, 30 Oct 2007 07:59:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752154AbXJ3L6z (ORCPT ); Tue, 30 Oct 2007 07:58:55 -0400 Received: from mx1.redhat.com ([66.187.233.31]:57595 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751770AbXJ3L6y (ORCPT ); Tue, 30 Oct 2007 07:58:54 -0400 Message-ID: <47271CAE.8000907@redhat.com> Date: Tue, 30 Oct 2007 09:59:42 -0200 From: Glauber de Oliveira Costa User-Agent: Thunderbird 2.0.0.6 (X11/20070811) MIME-Version: 1.0 To: Zachary Amsden CC: Ingo Molnar , linux-kernel@vger.kernel.org, tglx@linutronix.de, rusty@rustcorp.com.au, jeremy@goop.org, --cc@redhat.com, avi@quramnet.com, kvm-devel@lists.sourceforge.net, Glauber de Oliveira Costa , Dan Hecht , Garrett Smith Subject: Re: [PATCH] raise tsc clocksource rating References: <11936994092607-git-send-email-gcosta@redhat.com> <1193697734.9793.86.camel@bodhitayantram.eng.vmware.com> <20071029224852.GA27547@elte.hu> <1193698505.9793.90.camel@bodhitayantram.eng.vmware.com> In-Reply-To: <1193698505.9793.90.camel@bodhitayantram.eng.vmware.com> X-Enigmail-Version: 0.95.3 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1115 Lines: 31 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Zachary Amsden escreveu: > On Mon, 2007-10-29 at 23:48 +0100, Ingo Molnar wrote: >> * Zachary Amsden wrote: > >> if it's inaccurate why are you exposing it to the guest then? Native >> only uses the TSC if it's safe and accurate to do so. > > Not every guest support paravirt, but for correctness, all guests > require TSC, which must be exposed all the way up to userspace, no > matter what the efficiency or accuracy may be. > > Zach > However, with such accuracy, it will fail the tsc clocksources tests. If it passes, it'a good clocksource to use. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Using GnuPG with Remi - http://enigmail.mozdev.org iD8DBQFHJxyujYI8LaFUWXMRAhI5AKCDl/O7iA3TdtpvElVg8NoSDVfKpgCeNvz3 ZEZDMxg8T7FA2R+5cgH/uKI= =8qSH -----END PGP SIGNATURE----- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/