From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758048AbbCDTMF (ORCPT ); Wed, 4 Mar 2015 14:12:05 -0500 Received: from mga03.intel.com ([134.134.136.65]:31961 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753486AbbCDTMD (ORCPT ); Wed, 4 Mar 2015 14:12:03 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.09,689,1418112000"; d="scan'208";a="660475860" Message-ID: <54F75900.8070906@intel.com> Date: Wed, 04 Mar 2015 11:12:00 -0800 From: Dave Hansen User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0 MIME-Version: 1.0 To: Oleg Nesterov , Quentin Casasnovas CC: Andy Lutomirski , Borislav Petkov , Ingo Molnar , Linus Torvalds , Pekka Riikonen , Rik van Riel , Suresh Siddha , LKML , "Yu, Fenghua" Subject: Re: Oops with tip/x86/fpu References: <54F74F59.5070107@intel.com> <20150304190651.GA5589@redhat.com> In-Reply-To: <20150304190651.GA5589@redhat.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/04/2015 11:06 AM, Oleg Nesterov wrote: > On 03/04, Dave Hansen wrote: >> > I'm running a commit from the tip/x86/fpu branch: ae486033b98. It's on >> > a system which I normally boot with 'noxsaves'. When I boot without >> > 'noxsaves' it is getting a GPF around the time that init is forked off. > And I assume that (before this commit) the kernel runs fine if you boot > without 'noxsaves'? Before this commit without 'noxsaves': GOOD Before this commit with 'noxsaves': GOOD After this commit with 'noxsaves': GOOD After this commit without 'noxsaves': BAD