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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_2 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 8FE0BC43603 for ; Mon, 9 Dec 2019 11:01:27 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5F00B20726 for ; Mon, 9 Dec 2019 11:01:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5F00B20726 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kaod.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:38492 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ieGn8-0003gb-Dc for qemu-devel@archiver.kernel.org; Mon, 09 Dec 2019 06:01:26 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:38514) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ieGlq-0002pf-K8 for qemu-devel@nongnu.org; Mon, 09 Dec 2019 06:00:07 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ieGll-0007Hv-JZ for qemu-devel@nongnu.org; Mon, 09 Dec 2019 06:00:06 -0500 Received: from 10.mo173.mail-out.ovh.net ([46.105.74.148]:32817) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ieGll-0007Fn-BK for qemu-devel@nongnu.org; Mon, 09 Dec 2019 06:00:01 -0500 Received: from player688.ha.ovh.net (unknown [10.109.146.19]) by mo173.mail-out.ovh.net (Postfix) with ESMTP id 3FA42125608 for ; Mon, 9 Dec 2019 11:59:59 +0100 (CET) Received: from kaod.org (lns-bzn-46-82-253-208-248.adsl.proxad.net [82.253.208.248]) (Authenticated sender: groug@kaod.org) by player688.ha.ovh.net (Postfix) with ESMTPSA id B9248CFA6F68; Mon, 9 Dec 2019 10:59:49 +0000 (UTC) Date: Mon, 9 Dec 2019 11:59:47 +0100 From: Greg Kurz To: David Gibson Subject: Re: [for-5.0 PATCH 0/4] ppc: Fix interrupt controller emulation Message-ID: <20191209115947.2fb92760@bahia.w3ibm.bluemix.net> In-Reply-To: <20191209011428.GE2482@umbus.fritz.box> References: <157548861171.3650476.14824062174573272058.stgit@bahia.lan> <20191209011428.GE2482@umbus.fritz.box> X-Mailer: Claws Mail 3.17.4 (GTK+ 2.24.32; x86_64-redhat-linux-gnu) MIME-Version: 1.0 Content-Type: multipart/signed; boundary="Sig_/oFphr_KlpW15DPoGg++c/8R"; protocol="application/pgp-signature"; micalg=pgp-sha256 X-Ovh-Tracer-Id: 2967309204854905318 X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: -100 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedufedrudeltddgvddvucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuqfggjfdpvefjgfevmfevgfenuceurghilhhouhhtmecuhedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhepfffhvffukfgjfhfogggtsehgtderreertddvnecuhfhrohhmpefirhgvghcumfhurhiiuceoghhrohhugheskhgrohgurdhorhhgqeenucfkpheptddrtddrtddrtddpkedvrddvheefrddvtdekrddvgeeknecurfgrrhgrmhepmhhouggvpehsmhhtphdqohhuthdphhgvlhhopehplhgrhigvrheikeekrdhhrgdrohhvhhdrnhgvthdpihhnvghtpedtrddtrddtrddtpdhmrghilhhfrhhomhepghhrohhugheskhgrohgurdhorhhgpdhrtghpthhtohepqhgvmhhuqdguvghvvghlsehnohhnghhnuhdrohhrghenucevlhhushhtvghrufhiiigvpedt X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 46.105.74.148 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Laurent Vivier , Cornelia Huck , qemu-devel@nongnu.org, qemu-ppc@nongnu.org, =?UTF-8?B?Q8OpZHJpYw==?= Le Goater , Satheesh Rajendran Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" --Sig_/oFphr_KlpW15DPoGg++c/8R Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Mon, 9 Dec 2019 12:14:28 +1100 David Gibson wrote: > On Wed, Dec 04, 2019 at 08:43:31PM +0100, Greg Kurz wrote: > > Guest hangs have been observed recently on POWER9 hosts, specifically L= C92x > > "Boston" systems, when the guests are being rebooted multiple times. The > > issue isn't POWER9 specific though. It is caused by a very long standin= g bug > > when using the uncommon accel=3Dkvm,kernel-irqchip=3Doff machine config= uration > > which happens to be enforced on LC92x because of a host FW limitation. = This > > affects both the XICS and XIVE emulated interrupt controllers. > >=20 > > The actual fix is in patch 1. Patch 2 is a followup cleanup. The other > > patches are unrelated cleanups I came up with while investigating. > >=20 > > Since this bug always existed and we're already in rc4, I think it is b= etter > > to fix it in 5.0 and possibly backport it to stable and downstream if n= eeded. >=20 > Applied to ppc-for-5.0. >=20 >=20 According to Cornelia's comments, it seems I need to respin this against the s390-next branch to avoid conflicts. --Sig_/oFphr_KlpW15DPoGg++c/8R Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEtIKLr5QxQM7yo0kQcdTV5YIvc9YFAl3uKSMACgkQcdTV5YIv c9aKwA//RIoJ1A9HYWkERQRxIEPPzBYNh1y/3BYb1Qigzq3IFXN3VOEua/OgEPXe mGXMmljm4HRHwBYiWETR9M8QxwEN0pI8B7ZjOfx8LV1iJobnQbGiljtx8TRYTtOJ h+OxPSEwJQqrlM9xREnzoTIMGFTrs37af7FJasMc/F6sKLpGIEq4V/iBBotZub9A DjEKL8Psg/IOJCu0cxynkAtAzAG+X5BRf/tzHMt2EITi8R8PKJhYav+kwNoqTGRX Gb/9PqibO8y/BQH1JphbMIBLenzV/stZkzieBxwP/XkCvparhjDYH4grAL2dS+9h DBFXkDZQJfNP0XR/pldSkQq7PCK19qCFtPQT2SHBsCzwNO0yqbFfsokXDBUn4jcc TTjlnlXS56i01CXrcwP65QthUf0y+bsyAa5N7dmpZiv+krwNQmQ7XguL2HTtGgM8 1TIgXZxaW/3ANlgvZNwkuSP8FhLwU6feqhPWeCIRPJ9R8ZYA5N6Zx5cF6ArPbMM0 k3CD4OF5apWOu6H/7p9dLGyTUQPOrloFywFhwQl/S0qqhS5TfDBMcoIIS4j3Tix6 4zx0dG2YbOQJ4kpMvdAPucWf7eiF+bhYAzehl9mU/OR9tDRd7hmbH1D2rVeF8YKz KeppUA823tmLldVlDYsWWvzVc6whC/KrKkJbck+uSzih6g48In4= =cJK+ -----END PGP SIGNATURE----- --Sig_/oFphr_KlpW15DPoGg++c/8R--