Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752172Ab2FSKWe (ORCPT ); Tue, 19 Jun 2012 06:22:34 -0400 Received: from s15943758.onlinehome-server.info ([217.160.130.188]:41103 "EHLO mail.x86-64.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751768Ab2FSKWd (ORCPT ); Tue, 19 Jun 2012 06:22:33 -0400 Date: Tue, 19 Jun 2012 12:22:50 +0200 From: Borislav Petkov To: Peter Zijlstra Cc: Borislav Petkov , "H. Peter Anvin" , Henrique de Moraes Holschuh , LKML , x86 , Ingo Molnar , Andreas Herrmann , Dimitri Sivanich , Dmitry Adamushko , Greg Kroah-Hartman Subject: Re: [PATCH] x86, microcode: Make reload interface per system Message-ID: <20120619102250.GA787@aftab.osrc.amd.com> References: <20120613123649.GA26012@khazad-dum.debian.net> <20120613161139.GA18450@aftab.osrc.amd.com> <20120615123749.GC6083@aftab.osrc.amd.com> <1339764161.2559.63.camel@twins> <20120615125240.GD6083@aftab.osrc.amd.com> <20120615165231.GA9169@aftab.osrc.amd.com> <20120619024639.GB6186@khazad-dum.debian.net> <4FDFF27C.5000205@zytor.com> <20120619051116.GB31591@aftab.osrc.amd.com> <1340093864.21745.6.camel@twins> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1340093864.21745.6.camel@twins> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1034 Lines: 29 On Tue, Jun 19, 2012 at 10:17:44AM +0200, Peter Zijlstra wrote: > On Tue, 2012-06-19 at 07:11 +0200, Borislav Petkov wrote: > > $ rmmod microcode; modprobe microcode > > > > but then the same guys come :-) and say they don't want to reload > > modules for security reasons. > > Nah, they built their kernel without modules, much more secure! Not secure enough - they don't get microcode then (ucode loader uses request_firmware()) and has to be module for the initial load, at least. But I haven't tested what happens when it is built in and I use the reload interface, hehe something to play with today. -- Regards/Gruss, Boris. Advanced Micro Devices GmbH Einsteinring 24, 85609 Dornach GM: Alberto Bozzo Reg: Dornach, Landkreis Muenchen HRB Nr. 43632 WEEE Registernr: 129 19551 -- 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/