Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754901AbaDKS3r (ORCPT ); Fri, 11 Apr 2014 14:29:47 -0400 Received: from terminus.zytor.com ([198.137.202.10]:46131 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754599AbaDKS3p (ORCPT ); Fri, 11 Apr 2014 14:29:45 -0400 Message-ID: <53483487.6030103@zytor.com> Date: Fri, 11 Apr 2014 11:29:27 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 MIME-Version: 1.0 To: Brian Gerst , Ingo Molnar , Linux Kernel Mailing List , Linus Torvalds , Thomas Gleixner , stable@vger.kernel.org, "H. Peter Anvin" Subject: Re: [tip:x86/urgent] x86-64, modify_ldt: Ban 16-bit segments on 64-bit kernels References: In-Reply-To: X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 04/11/2014 11:27 AM, Brian Gerst wrote: > Is this bug really still present in modern CPUs? This change breaks > running 16-bit apps in Wine. I have a few really old games I like to > play on occasion, and I don't have a copy of Win 3.11 to put in a VM. It is not a bug, per se, but an architectural definition issue, and it is present in all x86 processors from all vendors. Yes, it does break running 16-bit apps in Wine, although Wine could be modified to put 16-bit apps in a container. However, this is at best a marginal use case. -hpa -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/