From owner-freebsd-stable@freebsd.org Mon Feb 26 22:47:21 2018 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id D1EACF2A035 for ; Mon, 26 Feb 2018 22:47:21 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from kib.kiev.ua (kib.kiev.ua [IPv6:2001:470:d5e7:1::1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 51BD770BA6 for ; Mon, 26 Feb 2018 22:47:21 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from tom.home (kib@localhost [127.0.0.1]) by kib.kiev.ua (8.15.2/8.15.2) with ESMTPS id w1QMlAVp074687 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Tue, 27 Feb 2018 00:47:14 +0200 (EET) (envelope-from kostikbel@gmail.com) DKIM-Filter: OpenDKIM Filter v2.10.3 kib.kiev.ua w1QMlAVp074687 Received: (from kostik@localhost) by tom.home (8.15.2/8.15.2/Submit) id w1QMlAmL074686; Tue, 27 Feb 2018 00:47:10 +0200 (EET) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: tom.home: kostik set sender to kostikbel@gmail.com using -f Date: Tue, 27 Feb 2018 00:47:10 +0200 From: Konstantin Belousov To: Rainer Duffner Cc: freebsd-stable@FreeBSD.org Subject: Re: Now that the meltdown-patches are in STABLE... Message-ID: <20180226224710.GU94212@kib.kiev.ua> References: <9167F335-70C1-4289-B94D-C13900FAD323@ultra-secure.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <9167F335-70C1-4289-B94D-C13900FAD323@ultra-secure.de> User-Agent: Mutt/1.9.3 (2018-01-21) X-Spam-Status: No, score=-2.0 required=5.0 tests=ALL_TRUSTED,BAYES_00, DKIM_ADSP_CUSTOM_MED,FREEMAIL_FROM,NML_ADSP_CUSTOM_MED autolearn=no autolearn_force=no version=3.4.1 X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on tom.home X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 26 Feb 2018 22:47:22 -0000 On Mon, Feb 26, 2018 at 09:47:26PM +0100, Rainer Duffner wrote: > Am I right to assume they aren???t being backported to 11.1 and we have to wait for 11.2? > > > Don???t get me wrong - I???d rather have a stable system when random reboots during the daily or weekly runs. > > But for my own planing, I???d really like to know what the way forward is going to look like. > > > https://wiki.freebsd.org/SpeculativeExecutionVulnerabilities > > Isn???t too helpful in this matter. I put the snapshot of the WIP of the merge to 11.1 at https://kib.kiev.ua/kib/amd64_11.1_meltdown.1.patch I only compiled this on the stable/11, not even booted. I suspect that it is not compilable on 11.1 because apparently the patch depends on some features of assembler only added in clang 5.0. If somebody does the runtime test of the patch, it would be useful.