From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6D6D3C433DF for ; Wed, 3 Jun 2020 15:42:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5369020772 for ; Wed, 3 Jun 2020 15:42:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726112AbgFCPmC (ORCPT ); Wed, 3 Jun 2020 11:42:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39520 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726084AbgFCPmC (ORCPT ); Wed, 3 Jun 2020 11:42:02 -0400 Received: from Galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 74E91C08C5C0; Wed, 3 Jun 2020 08:42:02 -0700 (PDT) Received: from p5de0bf0b.dip0.t-ipconnect.de ([93.224.191.11] helo=nanos.tec.linutronix.de) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1jgVWf-0003C6-9q; Wed, 03 Jun 2020 17:41:57 +0200 Received: by nanos.tec.linutronix.de (Postfix, from userid 1000) id 54A3410108D; Wed, 3 Jun 2020 17:41:55 +0200 (CEST) From: Thomas Gleixner To: Miklos Szeredi Cc: kvm@vger.kernel.org, Paolo Bonzini , Vincenzo Frascino , Juergen Gross , linux-kernel@vger.kernel.org Subject: Re: system time goes weird in kvm guest after host suspend/resume In-Reply-To: References: <875zcfoko9.fsf@nanos.tec.linutronix.de> <87r1v3lynm.fsf@nanos.tec.linutronix.de> Date: Wed, 03 Jun 2020 17:41:55 +0200 Message-ID: <87sgfcf96k.fsf@nanos.tec.linutronix.de> MIME-Version: 1.0 Content-Type: text/plain X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Miklos Szeredi writes: > On Fri, May 29, 2020 at 2:31 PM Miklos Szeredi wrote: > >> > Can you please describe the setup of this test? >> > >> > - Host kernel version > > 5.5.16-100.fc30.x86_64 > >> > - Guest kernel version > > 75caf310d16c ("Merge branch 'akpm' (patches from Andrew)") > >> > - Is the revert done on the host or guest or both? > > Guest. > >> > - Test flow is: >> > >> > Boot host, start guest, suspend host, resume host, guest is screwed >> > >> > correct? >> >> Yep. Of course this does not reproduce here. What kind of host is this running on? Can you provide a full demsg of the host please from boot to post resume? Thanks, tglx