From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S932210AbbHUKRT (ORCPT <rfc822;w@1wt.eu>);
	Fri, 21 Aug 2015 06:17:19 -0400
Received: from mx1.redhat.com ([209.132.183.28]:40758 "EHLO mx1.redhat.com"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S1753416AbbHUKRO (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
	Fri, 21 Aug 2015 06:17:14 -0400
Message-ID: <55D6FAA6.7020307@redhat.com>
Date: Fri, 21 Aug 2015 12:17:10 +0200
From: Denys Vlasenko <dvlasenk@redhat.com>
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0
MIME-Version: 1.0
To: Ingo Molnar <mingo@kernel.org>, "H. Peter Anvin" <hpa@zytor.com>
CC: Linus Torvalds <torvalds@linux-foundation.org>,
        Juergen Gross <jgross@suse.com>, Andy Lutomirski <luto@kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Brian Gerst <brgerst@gmail.com>,
        Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [GIT PULL] x86 fixes
References: <20150814071500.GA2678@gmail.com> <CA+55aFwP6gJ5Qh7btvf_gME35nvR-se==MuRcvctDqdxEQ9SJA@mail.gmail.com> <20150817080143.GA16928@gmail.com> <CA+55aFw4pjStVG6zqqS7VCeWvqH+mKcGV_CwqqyRbB1NGcZqug@mail.gmail.com> <F96A2BC9-B57F-4360-9DF2-A252BB9462B7@zytor.com> <CA+55aFwjbXFKE0u0stUV1s0E-3MrQ4HAcXMCPiaOjqZps5wWJQ@mail.gmail.com> <55D25D7F.40503@zytor.com> <20150819055931.GD32338@gmail.com> <20150819065056.GB28292@gmail.com>
In-Reply-To: <20150819065056.GB28292@gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On 08/19/2015 08:50 AM, Ingo Molnar wrote:
> I get some instances of:
> 
>    /etc/rc3.d/S99local: line 26:  1626 Illegal instruction 
> 
> due to user-space presuming modern FPU capabilities:
> 
>   Program received signal SIGILL, Illegal instruction.                                                                                                                                  
>   0xb76be371 in RAND_SSLeay () from /lib/libcrypto.so.6                    
> 
>   0xb76be371 <RAND_SSLeay+1297>:  fucomip %st(1),%st
> 
> FUCOMPIP is a P6+ FPU instruction.

I have a patch which adds support for emulating it. Will post now.