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=-7.6 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 43191C433E2 for ; Mon, 31 Aug 2020 13:16:22 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (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 F0C4720707 for ; Mon, 31 Aug 2020 13:16:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F0C4720707 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4Bg9h32sGqzDqTx for ; Mon, 31 Aug 2020 23:16:19 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=suse.de (client-ip=195.135.220.15; helo=mx2.suse.de; envelope-from=ro@suse.de; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=suse.de Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4Bg9d00scqzDqQ1 for ; Mon, 31 Aug 2020 23:13:39 +1000 (AEST) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 9BF91B8FD; Mon, 31 Aug 2020 13:13:35 +0000 (UTC) Subject: Re: KVM on POWER8 host lock up since 10d91611f426 ("powerpc/64s: Reimplement book3s idle code in C") To: Michael Ellerman , Nicholas Piggin , linuxppc-dev@lists.ozlabs.org, =?UTF-8?Q?Michal_Such=c3=a1nek?= References: <20200830201145.GA29521@kitsune.suse.cz> <1598835313.5688ngko4f.astroid@bobo.none> <50693d7e-6c8b-4908-d003-25b99a867850@suse.de> <87v9gz0y5y.fsf@mpe.ellerman.id.au> From: Ruediger Oertel Autocrypt: addr=ro@suse.de; prefer-encrypt=mutual; keydata= xsDiBDt+kCkRBADQ0wJSOQmW5oI8mdaLGd8eVOO27KfSVmVmswqqg6387sSWcuHdHgT9197a HUAL+rJ0mq+raR+zhbmC8WTxwQbBOufDcedGdPj+ueviSoW8ouDx5OJSg7QnMeiTsewU1JoG Wwfmavvh1vUCQvqXeLR7f3MHuRcdQkBdF+JxFC5cRwCg3k/JthNqkWXj59VokaHUDaRuq/0D /2/5UxV9cPVGgPczVsjOaHzp7Fw0aQtprqqylAcDbHuS2TPd2Uz+2jAqo9A2+u6q25ZVhWME 9P2F7DeI7s+FPdSwI74JWWpq3vKQ7k0zV9sD/HGK3YWpAcMnSErqdw6SVn/1selb3pK3Qzkp 6WeQlNbxAYGDKVjSVlzlDvdUosvRA/0YzmJZofVgtB2VDx1vaECXV//NWHOrOYmPWLVZ8INu 0wIwa/DA1FajCNt5LvyK4hEmrHKU4McqKIXE48g609Ukm7VR9TuGv3W47oDlOEpGaQTiebJr GdhAoRfwMoZc3wknevDCf1ORzU9QsFlrnZ/lBHKlwfmHOoOeMOXXmgsFpc0cUnVlZGlnZXIg T2VydGVsIDxyb0BzdXNlLmRlPsKOBBMRAgA3BQsHCgMEAxUDAgMWAgECF4ACGQEWIQQX3GVT hqc4S1PFylw85PLnI/K0FwUCXIG1fgUJKIfzVQAhCRA85PLnI/K0FxYhBBfcZVOGpzhLU8XK XDzk8ucj8rQXspIAnRc8obSdLDbkae9gww7ThdezsdhfAJ92sp0zGaZP0Wkd5q1p5h/iu4sG 8s7BTQRU7Qd+ARAA20INyzAu6fSz3kwXtBxoe8uEJANmpQQrYdBiNN0DpoWE/oBbo8UA0ntV HxfLepM8wVT/KpnGAeT4wFhyNrowWvQ6wODLl7t1/dyV/o8i6MNy713x5cZrn7uQS5wxRKeh w3vGpz0Ub/n2g3ME2kYmWW2YdaB2rQX8omVdpfMvfp6nl8CiyoE7yAMelWc9gAYihaTULITl LuZiQK/a2ZJRhi1dc/CXHM2BeTj6pLXG1kY/9y+uj5IjmcvfXVZW3XBOCsIHhe+bBuLXVH7b lvF1fJFcNqBNztulB/n7Dbd2LsuYwp9R+6AYZr0P4TpFiwijvAJE5M4bTW2zNGfym0kkmaiN UAmpi1y2H7AIJr6SIhVHAi7pG659DuQMANeOdqER12rvVL8RP5K3f5IiLc9hT8/q8Ytm7Iza 8+nyMJ84SY6DP+WKvlTil+Ka+vZyS+0pR3BI+Co6CW6mPobX82Vq/FWGXnlSp42Hge3EqnB5 86e5cAvmkLiDDRk7fyKYRiJpXOCa93WcjzkHsaxxy2ws2es5nv96H27qqmEh8szo3oRKVSeS DYKNxac/xB5ohrx93MbptROVLID+qph5PrskSR/3i77Bc0EmTSUMlwlb4px2/IKceuUlNKyp lR4hBo4pZZo7nVza/8PuveJQWbE8lwpy80E74mYYs07oiAE/wg8AEQEAAcJ9BBgRCAAmAhsM FiEEF9xlU4anOEtTxcpcPOTy5yPytBcFAlyBs3IFCQ8ZefQAIQkQPOTy5yPytBcWIQQX3GVT hqc4S1PFylw85PLnI/K0Fxc8AKCHdFGQ2izXAozTL8h69GDcxTR/DgCeIvMsdG/Uhb3HnS4g p2dYyL7hZ88= Organization: =?UTF-8?Q?SUSE_Linux_Products_GmbH=2c_GF=3a_Jeff_Hawn=2c_Jenni?= =?UTF-8?Q?fer_Guild=2c_Felix_Imend=c3=b6rffer=2c_HRB_21284_=28AG_N=c3=bcrnb?= =?UTF-8?Q?erg=29?= Message-ID: Date: Mon, 31 Aug 2020 15:13:22 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 In-Reply-To: <87v9gz0y5y.fsf@mpe.ellerman.id.au> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="q9yhtfAJ3u6bsFfqkSE188itn9m8rlRYJ" X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --q9yhtfAJ3u6bsFfqkSE188itn9m8rlRYJ Content-Type: multipart/mixed; boundary="xzeqa8skyzNMH4xh5rDAu3E0vxemOiLyF" --xzeqa8skyzNMH4xh5rDAu3E0vxemOiLyF Content-Type: text/plain; charset=utf-8 Content-Language: de-DE Content-Transfer-Encoding: quoted-printable Am 31.08.20 um 14:58 schrieb Michael Ellerman: [...] >> The machines are running in OPAL/PowerNV mode, with "ppc64_cpu --smt=3D= off". >> The number of VMs varies across the machines: >> obs-power8-01: 18 instances, "-smp 16,threads=3D8" >> obs-power8-02: 20 instances, "-smp 8,threads=3D8" >> obs-power8-03: 30 instances, "-smp 8,threads=3D8" >> obs-power8-04: 20 instances, "-smp 8,threads=3D8" >=20 > Can you send us the output of: >=20 > # grep . /sys/module/kvm_hv/parameters/* of course, the current values are: /sys/module/kvm_hv/parameters/dynamic_mt_modes:6 /sys/module/kvm_hv/parameters/h_ipi_redirect:1 /sys/module/kvm_hv/parameters/indep_threads_mode:Y /sys/module/kvm_hv/parameters/kvm_irq_bypass:1 /sys/module/kvm_hv/parameters/nested:Y /sys/module/kvm_hv/parameters/one_vm_per_core:N /sys/module/kvm_hv/parameters/target_smt_mode:0 (actually identical on all 5 above) --=20 with kind regards (mit freundlichem Grinsen), Ruediger Oertel (ro@suse.com,ro@suse.de,bugfinder@t-online.de) --------Do-Not-Accept-Binary-Blobs.----Ever.----From-Anyone.------------ Key fingerprint =3D 17DC 6553 86A7 384B 53C5 CA5C 3CE4 F2E7 23F2 B41= 7 SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 N=C3=BCrnberg,= Germany, (HRB 36809, AG N=C3=BCrnberg), Gesch=C3=A4ftsf=C3=BChrer: Feli= x Imend=C3=B6rffer --xzeqa8skyzNMH4xh5rDAu3E0vxemOiLyF-- --q9yhtfAJ3u6bsFfqkSE188itn9m8rlRYJ Content-Type: application/pgp-signature; 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