From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755661Ab1HRLgz (ORCPT ); Thu, 18 Aug 2011 07:36:55 -0400 Received: from mailout-de.gmx.net ([213.165.64.22]:42422 "HELO mailout-de.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1755198Ab1HRLgx (ORCPT ); Thu, 18 Aug 2011 07:36:53 -0400 X-Authenticated: #3035711 X-Provags-ID: V01U2FsdGVkX18QwP8+jmMQyIxHQQINqMsNDNJsC24pmZgEaOgyGt ayvAJ095gf15hg Message-ID: <4E4CF94B.4010803@gmx.de> Date: Thu, 18 Aug 2011 13:36:43 +0200 From: Ingo van Lil User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.21) Gecko/20090320 Fedora/2.0.0.21-1.fc10 Thunderbird/2.0.0.21 Mnenhy/0.7.6.666 MIME-Version: 1.0 To: Richard Weinberger CC: Stanislav Meduna , linux-kernel@vger.kernel.org, gunnarlindroth@hotmail.com, user-mode-linux-devel@lists.sourceforge.net Subject: Re: [uml-devel] Floating point problems on UML - help needed References: <4E4C2B6F.7000800@nod.at> <4E4CB13C.7010502@meduna.org> <4E4CED56.1030100@nod.at> In-Reply-To: <4E4CED56.1030100@nod.at> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 18/08/2011 12:45, Richard Weinberger wrote: >> You might try the patch posted in >> http://thread.gmane.org/gmane.linux.uml.devel/12158 >> (I don't have the environment to test it anymore) > > Cool, saving the FP registers explicitly on each task switch solves the > issue. > Do you know why Ingo's patch was never applied? > Ingo? I don't know why it was never applied, I guess it just slipped between the cracks. I've been using the patch for several months back in 2009, and it reliably fixed the observed problems. My employer switched from UML to QEMU/KVM since then, so I eventually lost interest. Cheers, Ingo