Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A85D6C4332F for ; Thu, 13 Jan 2022 12:31:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233374AbiAMMbj (ORCPT ); Thu, 13 Jan 2022 07:31:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37144 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231237AbiAMMbi (ORCPT ); Thu, 13 Jan 2022 07:31:38 -0500 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 64CA1C061748; Thu, 13 Jan 2022 04:31:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=MIME-Version:Content-Type:References: In-Reply-To:Date:Cc:To:From:Subject:Message-ID:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=O5U2AgH0G1kVu5MM4GuHWevFtiWkqtv8f/2+gNyvH7g=; b=hK373tEwlMl8kUaVVQWmHQAFaL Rws0QqjNP4WtId14hycos4InPbWKyYQbzuSxgxa+BYIX0RkeEsbpPiKE9Zg6umUKOIv1JXoERONKt UKGroDl1GaEs+7UqIFHtn13JHypESzH19+18KZEAbTYQW+BUt2+LDpl9e9pB/0HMvp77RCle2bF4H ocEb8wbtUjoCn6Ue7/jXDFvFIIAIfpECie2qagbIKrY5VS8riZ2O9YxBjgmQDVvo8VCJiQui15oGt kUI+ycQajCKwNlAEPti+yzrUK9kG/Lv99OpCq0NKTXE0X8JhAOOImSykwY2KIMva0KHFK/IihehuC iiiMLT0Q==; Received: from [2001:8b0:10b:1:4a2a:e3ff:fe14:8625] (helo=u3832b3a9db3152.ant.amazon.com) by bombadil.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1n7zGQ-005pid-T9; Thu, 13 Jan 2022 12:31:35 +0000 Message-ID: Subject: Re: [PATCH] KVM: avoid warning on s390 in mark_page_dirty From: David Woodhouse To: Christian Borntraeger , pbonzini@redhat.com Cc: butterflyhuangxx@gmail.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, seanjc@google.com, Cornelia Huck , Janosch Frank , David Hildenbrand , linux-s390 , Thomas Huth , Claudio Imbrenda Date: Thu, 13 Jan 2022 12:31:31 +0000 In-Reply-To: <20220113122924.740496-1-borntraeger@linux.ibm.com> References: <20220113122924.740496-1-borntraeger@linux.ibm.com> Content-Type: multipart/signed; micalg="sha-256"; protocol="application/pkcs7-signature"; boundary="=-1zpgKsU+ZHMndk060dAW" User-Agent: Evolution 3.36.5-0ubuntu1 MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-1zpgKsU+ZHMndk060dAW Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Thu, 2022-01-13 at 13:29 +0100, Christian Borntraeger wrote: > Avoid warnings on s390 like > [ 1801.980931] CPU: 12 PID: 117600 Comm: kworker/12:0 Tainted: G = E 5.17.0-20220113.rc0.git0.32ce2abb03cf.300.fc35.s390x+next #1 > [ 1801.980938] Workqueue: events irqfd_inject [kvm] > [...] > [ 1801.981057] Call Trace: > [ 1801.981060] [<000003ff805f0f5c>] mark_page_dirty_in_slot+0xa4/0xb0 [k= vm] > [ 1801.981083] [<000003ff8060e9fe>] adapter_indicators_set+0xde/0x268 [k= vm] > [ 1801.981104] [<000003ff80613c24>] set_adapter_int+0x64/0xd8 [kvm] > [ 1801.981124] [<000003ff805fb9aa>] kvm_set_irq+0xc2/0x130 [kvm] > [ 1801.981144] [<000003ff805f8d86>] irqfd_inject+0x76/0xa0 [kvm] > [ 1801.981164] [<0000000175e56906>] process_one_work+0x1fe/0x470 > [ 1801.981173] [<0000000175e570a4>] worker_thread+0x64/0x498 > [ 1801.981176] [<0000000175e5ef2c>] kthread+0x10c/0x110 > [ 1801.981180] [<0000000175de73c8>] __ret_from_fork+0x40/0x58 > [ 1801.981185] [<000000017698440a>] ret_from_fork+0xa/0x40 >=20 > when writing to a guest from an irqfd worker as long as we do not have > the dirty ring. >=20 > Signed-off-by: Christian Borntraeger Reluctantly-acked-by: David Woodhouse ... with a bucket nearby just in case. --=-1zpgKsU+ZHMndk060dAW Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCEkQw ggYQMIID+KADAgECAhBNlCwQ1DvglAnFgS06KwZPMA0GCSqGSIb3DQEBDAUAMIGIMQswCQYDVQQG EwJVUzETMBEGA1UECBMKTmV3IEplcnNleTEUMBIGA1UEBxMLSmVyc2V5IENpdHkxHjAcBgNVBAoT FVRoZSBVU0VSVFJVU1QgTmV0d29yazEuMCwGA1UEAxMlVVNFUlRydXN0IFJTQSBDZXJ0aWZpY2F0 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