From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933629AbbCRVtT (ORCPT ); Wed, 18 Mar 2015 17:49:19 -0400 Received: from mail-wg0-f47.google.com ([74.125.82.47]:35676 "EHLO mail-wg0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932921AbbCRVtP (ORCPT ); Wed, 18 Mar 2015 17:49:15 -0400 Message-ID: <5509F2D7.1050900@message-id.googlemail.com> Date: Wed, 18 Mar 2015 22:49:11 +0100 From: Stefan Seyfried User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 MIME-Version: 1.0 To: Linus Torvalds , Andy Lutomirski CC: Takashi Iwai , Denys Vlasenko , X86 ML , LKML , Tejun Heo Subject: Re: PANIC: double fault, error_code: 0x0 in 4.0.0-rc3-2, kvm related? References: <5505400B.8050300@message-id.googlemail.com> <5509CBF7.3040602@message-id.googlemail.com> In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am 18.03.2015 um 22:32 schrieb Linus Torvalds: > Is PARAVIRT enabled? The three nop's at the beginning of 'page_fault' > makes me suspect it is, and that that is some paravirt rewriting > area. What does paravirt go for that USERGS_SYSRET64 (or for > SWAPGS_UNSAFE_STACK, for that matter). This from the newer kernel package, but I doubt this configuration has been changed in the openSUSE kernel: susi:~ # grep PARAVIRT /boot/config-4.0.0-rc4-1.g126fc64-desktop CONFIG_PARAVIRT=y # CONFIG_PARAVIRT_DEBUG is not set # CONFIG_PARAVIRT_SPINLOCKS is not set # CONFIG_PARAVIRT_TIME_ACCOUNTING is not set CONFIG_PARAVIRT_CLOCK=y So yes, PARAVIRT is enabled. Best regards, Stefan -- Stefan Seyfried Linux Consultant & Developer -- GPG Key: 0x731B665B B1 Systems GmbH Osterfeldstraße 7 / 85088 Vohburg / http://www.b1-systems.de GF: Ralph Dehner / Unternehmenssitz: Vohburg / AG: Ingolstadt,HRB 3537