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=-12.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 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 BB5B6C4361B for ; Tue, 8 Dec 2020 17:59:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7888B23B3E for ; Tue, 8 Dec 2020 17:59:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730863AbgLHR71 (ORCPT ); Tue, 8 Dec 2020 12:59:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41932 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726810AbgLHR70 (ORCPT ); Tue, 8 Dec 2020 12:59:26 -0500 Received: from merlin.infradead.org (merlin.infradead.org [IPv6:2001:8b0:10b:1231::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 44034C061749; Tue, 8 Dec 2020 09:58:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=Content-Transfer-Encoding:Content-Type: In-Reply-To:MIME-Version:Date:Message-ID:From:References:Cc:To:Subject:Sender :Reply-To:Content-ID:Content-Description; bh=xpPrMtRvHw9uqYWab0h0BufwacaQTlL6o1POPE2Agm0=; b=ujqn2sNEqBW65hdKJbVwhyiG1I q4h6IPSVJMUPyS8qmJfMk3lQTvdUQ/axMqLnNICqsLCh3A0jm7G1ifHG9cR3Fnsh0HhGPojPvl39k VEoEAIS6jB/Ik5kgCUOspdU6i/lw2M5sWEvMVtApWv4YoTC/HjtWgLGR/T7UP/Z5x9swPOVQSnCOd a+DFbupqke6wOcA6HjN+2ufyF2MqIkGP4Ic6ZhPUpaR5lDQyWUgKCtjp1wSLWZPOyDicUUYPwel6B 0kjRicsFxiqa7Rqrhr3nGXAB2PfMNCXELi13TMqybrAjLsIQr0JG9/IXRhxNOrWJn1DfcfSv+aOJm x18Tfs8g==; Received: from [2601:1c0:6280:3f0::1494] by merlin.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kmhG3-0007v4-7W; Tue, 08 Dec 2020 17:58:39 +0000 Subject: Re: [PATCH] Update documentation to reflect what TAINT_CPU_OUT_OF_SPEC means nowadays To: Jonathan Corbet , Mathieu Chouquet-Stringer Cc: Borislav Petkov , Stephen Kitt , Andrew Morton , Kees Cook , "Guilherme G. Piccoli" , Eric Biggers , Qais Yousef , Naoki Hayama , Yue Hu , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org References: <20201202153244.709752-1-me@mathieu.digital> <20201208105439.23e2349b@lwn.net> From: Randy Dunlap Message-ID: <1254edd7-25ee-b73d-da2c-194d38ba7890@infradead.org> Date: Tue, 8 Dec 2020 09:58:32 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.4.0 MIME-Version: 1.0 In-Reply-To: <20201208105439.23e2349b@lwn.net> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/8/20 9:54 AM, Jonathan Corbet wrote: > On Wed, 2 Dec 2020 16:32:43 +0100 > Mathieu Chouquet-Stringer wrote: > >> Hello Jonathan, >> >> Here's a patch updating the meaning of TAINT_CPU_OUT_OF_SPEC after >> Borislav introduced changes in a7e1f67ed29f and upcoming patches in tip. >> >> TAINT_CPU_OUT_OF_SPEC now means a bit more what it implies as the >> flag isn't set just because of a CPU misconfiguration or mismatch. >> Historically it was for SMP kernel oops on an officially SMP incapable >> processor but now it also covers CPUs whose MSRs have been incorrectly >> poked at from userspace, drivers being used on non supported >> architectures, broken firmware, mismatched CPUs, ... >> >> Update documentation and script to reflect that. >> >> Signed-off-by: Mathieu Chouquet-Stringer > > Hearing no objection, I've applied this. Hm, I was glad to read this new info since my old testing laptop now tells me that it needs a microcode update. :( -- ~Randy