From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753247AbYG1Odw (ORCPT ); Mon, 28 Jul 2008 10:33:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751444AbYG1Odo (ORCPT ); Mon, 28 Jul 2008 10:33:44 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:47329 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751454AbYG1Odn (ORCPT ); Mon, 28 Jul 2008 10:33:43 -0400 Date: Mon, 28 Jul 2008 16:33:26 +0200 From: Ingo Molnar To: Jeremy Fitzhardinge Cc: Linux Kernel Mailing List , the arch/x86 maintainers Subject: Re: [PATCH] xen: suppress known wrmsrs Message-ID: <20080728143326.GG18144@elte.hu> References: <4888EABA.1030608@goop.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4888EABA.1030608@goop.org> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Jeremy Fitzhardinge wrote: > In general, Xen doesn't support wrmsr from an unprivileged domain; it > just ends up ignoring the instruction and printing a message on the > console. > > Given that there are sets of MSRs we know the kernel will try to write > to, but we don't care, just eat them in xen_write_msr to cut down on > console noise. > > Signed-off-by: Jeremy Fitzhardinge applied to tip/x86/xen - thanks, Ingo