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=-5.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 B3075C433EF for ; Wed, 15 Sep 2021 13:00:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 945086135D for ; Wed, 15 Sep 2021 13:00:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233205AbhIONB4 (ORCPT ); Wed, 15 Sep 2021 09:01:56 -0400 Received: from mga11.intel.com ([192.55.52.93]:59959 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229670AbhIONBw (ORCPT ); Wed, 15 Sep 2021 09:01:52 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10107"; a="219125340" X-IronPort-AV: E=Sophos;i="5.85,295,1624345200"; d="scan'208";a="219125340" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Sep 2021 06:00:33 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.85,295,1624345200"; d="scan'208";a="472391558" Received: from ranerica-svr.sc.intel.com ([172.25.110.23]) by orsmga007.jf.intel.com with ESMTP; 15 Sep 2021 06:00:32 -0700 Date: Wed, 15 Sep 2021 06:00:07 -0700 From: Ricardo Neri To: Marcus =?iso-8859-1?Q?R=FCckert?= Cc: Borislav Petkov , X86 ML , LKML Subject: Re: [PATCH] x86/umip: Add a umip= cmdline switch Message-ID: <20210915130007.GA7946@ranerica-svr.sc.intel.com> References: <20210907200454.30458-1-bp@alien8.de> <20210911011459.GA11980@ranerica-svr.sc.intel.com> <20210913213836.GA10627@ranerica-svr.sc.intel.com> <20210915113410.GA7130@ranerica-svr.sc.intel.com> <20210915142123.49f8137b@fortress.home.nordisch.org> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20210915142123.49f8137b@fortress.home.nordisch.org> User-Agent: Mutt/1.9.4 (2018-02-28) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Sep 15, 2021 at 02:21:23PM +0200, Marcus Rückert wrote: > On Wed, 15 Sep 2021 04:34:10 -0700 > Ricardo Neri wrote: > > > They're all likely old, arcane applications or games run in wine > > > which people have no access to the source code anyway so come to > > > think of it, the once thing is starting to make more sense to me > > > now. > > > > Indeed, no one has reported "modern" application using these > > instructions. > > I am not sure if Blizzard Entertainment would tell us why they use this > CPU instruction in Overwatch. And that game is "only" 5 years old. Ah! 5 years old does not seem too old to me. Then it is not only old applications. Then the warning did catch an app that could in theory be fixed (if Overwatch is still maintained). Thanks and BR, Ricardo