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=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 52B2FC17441 for ; Tue, 12 Nov 2019 18:37:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 22F7B21A49 for ; Tue, 12 Nov 2019 18:37:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573583843; bh=Lvy4XTOQ7GGxUfbT/8C8wSIhdjF7sD5Vaz52aFvJGwM=; h=References:In-Reply-To:From:Date:Subject:To:Cc:List-ID:From; b=R9Ur4wWS1yyBke56DHWlH6gl/TpDeARBnBre04KI0ZrVqGnGALkFVsNKDgfGNO6vL Ekuj3sZHHTOSL2oazSurY1TaVSoKGK0lxN7I2oZXKUrpacw4o0sNVzsnXyfT3yRW5f DaSOZlPeOUKbbemQdOw5rXJ+Ud5aW+2MNB1LKzPs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727337AbfKLShW (ORCPT ); Tue, 12 Nov 2019 13:37:22 -0500 Received: from mail.kernel.org ([198.145.29.99]:56098 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726952AbfKLShV (ORCPT ); Tue, 12 Nov 2019 13:37:21 -0500 Received: from mail-wm1-f44.google.com (mail-wm1-f44.google.com [209.85.128.44]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C1F92222C5 for ; Tue, 12 Nov 2019 18:37:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573583841; bh=Lvy4XTOQ7GGxUfbT/8C8wSIhdjF7sD5Vaz52aFvJGwM=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=lYXqhODX4CTLOMAeg96i8HpOo2f+BT9urGtJ0c0BgQPMN5DoSeCazZONFNfEXVZ7A i0h22T98XfJK9hWokMlxAUXtmBvk5yyrF4qoELEmoBohzHuzQBXOlhYclWRn9nM6YG 60HT3NFZEbyU+JENvZ3W3T7ZVIIAiIcb8RDxq7NI= Received: by mail-wm1-f44.google.com with SMTP id l1so4379259wme.2 for ; Tue, 12 Nov 2019 10:37:20 -0800 (PST) X-Gm-Message-State: APjAAAUrwnc10pBLoXLoIbvsnmPZQQ/d/BKjOjMKEzpYg9CImcplqAxj NqjskV1xkq6ofGnk9SM2ePF5dq2uHv7CQ1+GcfH7iw== X-Google-Smtp-Source: APXvYqwUfcHuWCDDKcAWpJ/cAbvkX3JmAvIbFGgBeuBaLKkbf4657GK0B+Gp3FFR/AkLf84UMnbK3uoBaAmUE5CsujQ= X-Received: by 2002:a05:600c:1002:: with SMTP id c2mr5288493wmc.79.1573583839351; Tue, 12 Nov 2019 10:37:19 -0800 (PST) MIME-Version: 1.0 References: <20191111220314.519933535@linutronix.de> <20191111223052.990437835@linutronix.de> In-Reply-To: <20191111223052.990437835@linutronix.de> From: Andy Lutomirski Date: Tue, 12 Nov 2019 10:37:08 -0800 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [patch V2 15/16] x86/iopl: Remove legacy IOPL option To: Thomas Gleixner Cc: LKML , X86 ML , Linus Torvalds , Andy Lutomirski , Stephen Hemminger , Willy Tarreau , Juergen Gross , Sean Christopherson , "H. Peter Anvin" Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Nov 11, 2019 at 2:35 PM Thomas Gleixner wrote: > > From: Thomas Gleixner > > The IOPL emulation via the I/O bitmap is sufficient. Remove the legacy > cruft dealing with the (e)flags based IOPL mechanism. Acked-by: Andy Lutomirski But I think you could simplify a little bit and have a single config option that controls the iopl() and iopl() syscalls.