From mboxrd@z Thu Jan 1 00:00:00 1970 From: Glauber de Oliveira Costa Subject: Re: [PATCH] raise tsc clocksource rating Date: Tue, 30 Oct 2007 09:59:42 -0200 Message-ID: <47271CAE.8000907@redhat.com> 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> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: jeremy-TSDbQ3PG+2Y@public.gmane.org, avi-i/T1Zxg06OZWk0Htik3J/w@public.gmane.org, kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, Dan Hecht , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Glauber de Oliveira Costa , --cc-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, Garrett Smith To: Zachary Amsden Return-path: In-Reply-To: <1193698505.9793.90.camel-cxY/u30q8FloTgUnLF1by8fTvwmfpRNyZeezCHUQhQ4@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: kvm.vger.kernel.org -----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----- ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/