Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752758AbeADS4R (ORCPT + 1 other); Thu, 4 Jan 2018 13:56:17 -0500 Received: from mail.skyhub.de ([5.9.137.197]:51370 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751899AbeADS4Q (ORCPT ); Thu, 4 Jan 2018 13:56:16 -0500 Date: Thu, 4 Jan 2018 19:56:13 +0100 From: Borislav Petkov To: Dave Hansen Cc: Andrea Arcangeli , Tim Chen , Thomas Gleixner , Andy Lutomirski , Linus Torvalds , Greg KH , Andi Kleen , Arjan Van De Ven , linux-kernel@vger.kernel.org, Tom Lendacky Subject: Re: [PATCH 6/7] x86/spec_ctrl: Add sysctl knobs to enable/disable SPEC_CTRL feature Message-ID: <20180104185613.kpv2k7e64tdz3776@pd.tnic> References: <4d4b3752e8e533201c6983d8473eea95c747ea33.1515086770.git.tim.c.chen@linux.intel.com> <20180104183345.od2o4hsfu2tv6nc4@pd.tnic> <20180104183826.GL13348@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20170609 (1.8.3) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Return-Path: + Tom. On Thu, Jan 04, 2018 at 10:54:38AM -0800, Dave Hansen wrote: > On 01/04/2018 10:38 AM, Andrea Arcangeli wrote: > >> And then, if at all, this needs to be connected to the retpolines fun, > >> methinks, so that it can be decided at boot what to use. > Yes, we need to reconcile this with the retpoline. I've tried to > capture what we do where in here: > > > https://docs.google.com/document/d/e/2PACX-1vSMrwkaoSUBAFc6Fjd19F18c1O9pudkfAY-7lGYGOTN8mc9ul-J6pWadcAaBJZcVA7W_3jlLKRtKRbd/pub > > Any feedback on this, especially on the CPUs that aren't specifically > covered would be welcome. -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply.