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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 8BD31C3A5A0 for ; Mon, 20 Apr 2020 14:13:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 73B3A20B1F for ; Mon, 20 Apr 2020 14:13:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728668AbgDTONZ (ORCPT ); Mon, 20 Apr 2020 10:13:25 -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