From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A7D8CC43610 for ; Tue, 20 Nov 2018 23:44:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D65CC2148E for ; Tue, 20 Nov 2018 23:44:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D65CC2148E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726702AbeKUKPo (ORCPT ); Wed, 21 Nov 2018 05:15:44 -0500 Received: from mga12.intel.com ([192.55.52.136]:12404 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725913AbeKUKPo (ORCPT ); Wed, 21 Nov 2018 05:15:44 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 20 Nov 2018 15:43:58 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,258,1539673200"; d="scan'208";a="97837766" Received: from avandeve-mobl.amr.corp.intel.com (HELO [10.249.65.218]) ([10.249.65.218]) by FMSMGA003.fm.intel.com with ESMTP; 20 Nov 2018 15:43:54 -0800 Subject: Re: STIBP by default.. Revert? To: Jiri Kosina Cc: Linus Torvalds , Thomas Gleixner , Peter Zijlstra , Josh Poimboeuf , Andrea Arcangeli , David Woodhouse , Andi Kleen , Tim Chen , "Schaufler, Casey" , Linux List Kernel Mailing , the arch/x86 maintainers , "stable@vger.kernel.org" References: <51127fd4-5dcc-b2b9-4873-72098d2a77d9@linux.intel.com> From: Arjan van de Ven Message-ID: <6624874d-3e5b-1d41-7962-9291dd2eaa1a@linux.intel.com> Date: Wed, 21 Nov 2018 07:43:50 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/20/2018 11:27 PM, Jiri Kosina wrote: > On Mon, 19 Nov 2018, Arjan van de Ven wrote: > >> In the documentation, AMD officially recommends against this by default, >> and I can speak for Intel that our position is that as well: this really >> must not be on by default. > > Thanks for pointing to the AMD doc, it's indeed clearly stated there. > > Is there any chance this could perhaps be added to Intel documentation as > well, so that we avoid cases like this in the future? absolutely that's now already in progress; the doc publishing process is a bit on the long side unfortunately so it won't be today ;)