Received: by 2002:a25:683:0:0:0:0:0 with SMTP id 125csp599002ybg; Wed, 3 Jun 2020 08:46:31 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyTimzT+BHH18y1faOKlMJ2VYjR6oo6p9jIX8UVFxnoj3UHa7fzgkcDCxNQtuxRfhKjmr5s X-Received: by 2002:a50:cc85:: with SMTP id q5mr81998edi.62.1591199190837; Wed, 03 Jun 2020 08:46:30 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1591199190; cv=none; d=google.com; s=arc-20160816; b=jpYt/595ex3tEYUM8cNvfhtu+NpBVtfoSsNII01yET7S4XB3YWQs8ptWlJIDsNK6/M isDqkvrSeN5KHv3pv9sieBNpkUyTBAqC3WurINAXRlomuMD8UnykpCxADPPsz8Up8bDZ JTCGdfTuesvWbSY+ZFAq9TctUKtmwimF4FXTJI5kvPPZlLIJ4maFzPuGpaP7jscJm/Au PENQZKanOrmi9H6Nb46WVkxfConWRSkMFvOeE+yeDjJCPdxFPjX+B7rorG9BWsau3BCH 1SxoxekIzMxH7nWned1K9Lt76BxKciCHMbyGUM3o6wa3wUF+JibbPYSqON2EPAPHvN+4 2KLw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:message-id:date:references :in-reply-to:subject:cc:to:from; bh=ptSvPerYdhUoVeyTdRw/2PZ3BiZ2gRGx8F2WW1/m2tg=; b=RU30+Gap7/9ylsY4ViRz+3/+D3ss8hokNbQb83HgF39eK0oa0oGkLF9t9InNd/4Rmn 0FNK0fKYUwfI+6JkyilJg7EhkJDQLRB9vIiujxTtMtKI9l3GjR3NgtJibDSUe1knyVDJ nWfbD5ehBQ9v72aI8GEFCtLfkcSxuGAmLY9XlRo6Akv0QonJRW9mBadHbjyj6tEv25XL w+sq2LJVlcjQvoAQUTmFppQv3cssZ70Qz7tmPQM9HndW+gMBapjp9/MMrTCanZNxl/HK VwGrM/7uK3K93aAZEwbrNIoNX1oNjHR5AIDdnpTDlUarpBqaB19INGOeOklyySlAd6RU 8wvg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id d11si1284796eds.416.2020.06.03.08.46.07; Wed, 03 Jun 2020 08:46:30 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726118AbgFCPmC (ORCPT + 99 others); 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: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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