Received: by 2002:a25:1985:0:0:0:0:0 with SMTP id 127csp3718250ybz; Mon, 20 Apr 2020 08:13:09 -0700 (PDT) X-Google-Smtp-Source: APiQypI+3oVod9NoIzSWqmze4VVSOi8oE3W3qboQ84sm+n7df1vALoEw9XWu2+H4vKq/3dlUC+YM X-Received: by 2002:a05:6402:7d6:: with SMTP id u22mr14482149edy.149.1587395589050; Mon, 20 Apr 2020 08:13:09 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1587395589; cv=none; d=google.com; s=arc-20160816; b=CX92PDDoy/O9vOCVCIiZd4YT2Y7NDvakq49BhgzBPAoqjb+9D6qWK5x1dJM9m+6tBw R5JLBP2eErY/HH9T2x/QL7ZEW1oAebFhakXG9/Mt9p8FYhOM+AYwf3f6W27oQUbxPHNQ C2JLHAwXICVhuy1moSF3Y90jmVhy9WDYmFd535ZaL0SlC1Ds/T/HL33zoohfusNDnbMc 6eZXQCIKO2D7rgHqecsX5JxMNV1tPXBZf23BYVAvkVTDGPAq61IxUECWJWelmkZ2nVLF kB2sMi+5p5ezbGFoUsElGwsut3XVlWIwLweKMv8EQWpWPirodYaW8CS1H2VDEr+9vkmC CCSA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :ironport-sdr:ironport-sdr; bh=rwNwvXL+VG+WJOpExwkfLFKbT4SzpFQq6q371bELtqI=; b=O6UuDbc4q/S2Ol/iV6ZX8zKPfZB8ECk9GRwGsVBdToLpTOHVTn9uHaAUW41F8RwoZQ KAncepYbGQ+LeSFG0myoSFo2BPS0LxY9te9liIFIdTFIrXRHgo8qaeZPkx8G2Hr5bU45 oJ7hcDAwJZUxk5mZJUwTOJXjokC4nrHqoIw7jcBIK7bwAvo0yf0dSIgKVs/9vJM+0qGl wAptlVHz37h5frTEsKbh0s4HDZk9Cg/0fXELwOGOCgqRQ5xfBE0KMFeh+Ejw+ZytBT6J 5GSb4UtBb1s6I7t03/iQs58EiDL/KRB4pl3QpgbUhI6I1VVaUVLA/hjL5Lv7FhHk/65h rLcQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id dc18si716695edb.498.2020.04.20.08.12.42; Mon, 20 Apr 2020 08:13:09 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728634AbgDTONY (ORCPT + 99 others); Mon, 20 Apr 2020 10:13:24 -0400 Received: from mga18.intel.com ([134.134.136.126]:35570 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725989AbgDTONV (ORCPT ); Mon, 20 Apr 2020 10:13:21 -0400 IronPort-SDR: VES5JTzJEPlEsMu7awp9pQ1kfKCm4eE+4lEyhNjrlOnr+gXmlaA2T71/YoBsy2zPM1czYbqzQs 94NuKmvf7pYA== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Apr 2020 07:13:20 -0700 IronPort-SDR: C5YEjk16KLceQ2xbcuHuxxgUq8Hl+pWRxukmQvSdIVbsp/4O33LXueqrv+89YaMIrfAgeqKblO eXZHU++Va91A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.72,406,1580803200"; d="scan'208";a="245378864" Received: from tassilo.jf.intel.com (HELO tassilo.localdomain) ([10.7.201.21]) by fmsmga007.fm.intel.com with ESMTP; 20 Apr 2020 07:13:20 -0700 Received: by tassilo.localdomain (Postfix, from userid 1000) id 4D8943019B5; Mon, 20 Apr 2020 07:13:20 -0700 (PDT) Date: Mon, 20 Apr 2020 07:13:20 -0700 From: Andi Kleen To: Andy Lutomirski Cc: Sasha Levin , "Bae, Chang Seok" , "Metzger, Markus T" , "hpa@zytor.com" , Thomas Gleixner , "bp@alien8.de" , "Hansen, Dave" , "Luck, Tony" , Pedro Alves , Simon Marchi , "Shankar, Ravi V" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH v9 00/17] Enable FSGSBASE instructions Message-ID: <20200420141320.GC608746@tassilo.jf.intel.com> References: <20191115191200.GD22747@tassilo.jf.intel.com> <29FD6626-4347-4B79-A027-52E44C7FDE55@intel.com> <20200413200336.GA11216@sasha-vm> <20200414003205.GF397326@tassilo.jf.intel.com> <20200417133021.GT1068@sasha-vm> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > Now maybe no one cares about #4. Yes noone cares. Selectors are largely obsolete. > the *gdb developers* don't care. But gdb isn't exactly a good example > of a piece of software that tries to work correctly when dealing with > unusual software. Maybe other things like rr will care more. It rr is used to replay modern software, and modern software doesn't care about selectors, thus rr doesn't care either. Please stop the FUD. Thanks, -Andi