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=-0.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, T_DKIMWL_WL_HIGH,URIBL_BLOCKED autolearn=ham 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 85942C43334 for ; Sun, 2 Sep 2018 13:18:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2238720652 for ; Sun, 2 Sep 2018 13:18:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=microsoft.com header.i=@microsoft.com header.b="ccsjeBdu" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2238720652 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=microsoft.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729947AbeIBRds (ORCPT ); Sun, 2 Sep 2018 13:33:48 -0400 Received: from mail-dm3nam03on0125.outbound.protection.outlook.com ([104.47.41.125]:63162 "EHLO NAM03-DM3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1730340AbeIBRc2 (ORCPT ); Sun, 2 Sep 2018 13:32:28 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=LwQxm8ClCFf40U22JboGywpZa3Zk5VzMq/wHIeq37I8=; b=ccsjeBduo6R9PyszklAa54gQPMkx1uOVEa+36nKZkIetN5XV3JHT26DvMR4sMKaek+oONsx4Ktf+vB3hBRHnpwtR4x4CdBi4Yq6XWYUTyGDYdgdBVCNJ8mnY5Rn09Wz2D4Dldji7TeWFudA7xCXbC4Ih3AMUwWQ2au6aEWfJT54= Received: from CY4PR21MB0776.namprd21.prod.outlook.com (10.173.192.22) by CY4PR21MB0629.namprd21.prod.outlook.com (10.175.115.19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1122.7; Sun, 2 Sep 2018 13:16:24 +0000 Received: from CY4PR21MB0776.namprd21.prod.outlook.com ([fe80::7c3a:eea8:1391:1611]) by CY4PR21MB0776.namprd21.prod.outlook.com ([fe80::7c3a:eea8:1391:1611%7]) with mapi id 15.20.1143.000; Sun, 2 Sep 2018 13:16:24 +0000 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Joerg Roedel , Thomas Gleixner , "H . Peter Anvin" , "linux-mm@kvack.org" , Linus Torvalds , Andy Lutomirski , Dave Hansen , Josh Poimboeuf , Juergen Gross , Peter Zijlstra , Borislav Petkov , Jiri Kosina , Boris Ostrovsky , Brian Gerst , David Laight , Denys Vlasenko , Eduardo Valentin , Greg KH , Will Deacon , "aliguori@amazon.com" , Daniel Gruss , "hughd@google.com" , "keescook@google.com" , Andrea Arcangeli , Waiman Long , Pavel Machek , Arnaldo Carvalho de Melo , Alexander Shishkin , Jiri Olsa , Namhyung Kim , "joro@8bytes.org" , Sasha Levin Subject: [PATCH AUTOSEL 4.4 22/47] x86/mm: Remove in_nmi() warning from vmalloc_fault() Thread-Topic: [PATCH AUTOSEL 4.4 22/47] x86/mm: Remove in_nmi() warning from vmalloc_fault() Thread-Index: AQHUQr8ZwHH5zWIWXkO0DAcu1pbC9Q== Date: Sun, 2 Sep 2018 13:16:04 +0000 Message-ID: <20180902131533.184092-22-alexander.levin@microsoft.com> References: <20180902131533.184092-1-alexander.levin@microsoft.com> In-Reply-To: <20180902131533.184092-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;CY4PR21MB0629;6:9KdxX4LYk7KXOSgZiQ8V6sc3IN/VBHyNPWVabowE1lXLpiYyZ0r8qgz/ET6CUBLexMdbG960camrT51hpDrTpYQPUPGM4iOkUlBN90L+XCeygAm5RJZLAA4yfVkqmQvwNrjwUlzsZCB54QeXxQwPNvI40zwv9F/+raTSDJIP69M4V1kCaAPLHHOvzXYBOrQnezQz7GeP32MoKXCZjHXMyi0O/HlKaYjW9mfhKdbPZAAzOGP/stqzGFcTm90emwrGKFBxrIoI6T43wUSItsktIgkGjW5KbBvSmmryvR35oYZ0Iy1Gb3oouRIIhfSdZXjGfRu3yDBvmdAHhY5zSoIhERswtP04U+GzVyVw/ZCd7WT1AKR8Bjq/bRkmAgyM9gc6zC2o3a7+dOrIUSBPmbMUkirr53SRoN8GCGDqLskKCe2UsocyKY/EtyQD5NflZKzJCTzZw1CRJlLOCZx3RrlOjA==;5:F7zYUEGeloKqvrA7U52SF3+QWPswazizs++sbOQfggM27SXfQ9zORF/dGoucT5Ddr3WoraQIqyE2+pece3rd/0KxpMIume42nxTo92zyIsaKYn+T5iLLx23URlf0GmuAWMrtGSrSk89AOJI4OZ5ygCr7MmPopuxGGOOegRgtxPk=;7:gP5wTrE3JJVQQNsV3j3GthfBlYsRN/KSt/mZy/72TRmRQRA2s8Nd3E2DHVEy/qSYhKoKCw7skKuZj7NI+h7LsJ8+ipwEW8eg788H+Hfr0D4ltzerkoJHEG4frEFwM3XpyKij3jBcoqhC+iujDLqpt0TV9EIxpkKMVfUw40RQsYtTmf8cUq/+htfvT23dWVTMsXwNM0cSPtO/oVK/tX1Q4uufQmSeotVUnvcOPwmmcO95ZUOaLKu3pOFmrUzZmJPy x-ms-office365-filtering-correlation-id: e9915882-c72c-4619-2136-08d610d6484b x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(7020095)(4652040)(4534165)(4627221)(201703031133081)(201702281549075)(5600074)(711020)(4618075)(2017052603328)(7193020);SRVR:CY4PR21MB0629; 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received-spf: None (protection.outlook.com: microsoft.com does not designate permitted sender hosts) authentication-results: spf=none (sender IP is ) smtp.mailfrom=Alexander.Levin@microsoft.com; x-microsoft-antispam-message-info: 7m7OBPJHhDOnEJZWf4gBID65omfBrE5USSl/vJ9XUFgagn4xjR3hRDa+FGZDCT+S/MESLgO/pPaavR/Vif4YzcP6DkIWM2eY3k0cWqZ5MCapK1gczRzZVsgSMStoAzKafaDDS1QMl0OqYz+CpSxbe8a69yxnfZQfynpxvhicv5H4pC1c3OkbdmWr64b/R41ud+iLpWZpw+aGGGt4K46KuprSI8ekgNrTT/1UzXdTJuoCJLdzl0krQRXy0E0m4GdD1V5HLwwnGS5dT92HfkRKLTFYSVqiXdWePDSdh5dSohxZ3jCDYaJoCPX1j71AxLpkIebzldFWJSlE/gFBrlb2YgyN4koF8C6H28vf9DrGyXE= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: e9915882-c72c-4619-2136-08d610d6484b X-MS-Exchange-CrossTenant-originalarrivaltime: 02 Sep 2018 13:16:04.3199 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR21MB0629 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Joerg Roedel [ Upstream commit 6863ea0cda8725072522cd78bda332d9a0b73150 ] It is perfectly okay to take page-faults, especially on the vmalloc area while executing an NMI handler. Remove the warning. Signed-off-by: Joerg Roedel Signed-off-by: Thomas Gleixner Tested-by: David H. Gutteridge Cc: "H . Peter Anvin" Cc: linux-mm@kvack.org Cc: Linus Torvalds Cc: Andy Lutomirski Cc: Dave Hansen Cc: Josh Poimboeuf Cc: Juergen Gross Cc: Peter Zijlstra Cc: Borislav Petkov Cc: Jiri Kosina Cc: Boris Ostrovsky Cc: Brian Gerst Cc: David Laight Cc: Denys Vlasenko Cc: Eduardo Valentin Cc: Greg KH Cc: Will Deacon Cc: aliguori@amazon.com Cc: daniel.gruss@iaik.tugraz.at Cc: hughd@google.com Cc: keescook@google.com Cc: Andrea Arcangeli Cc: Waiman Long Cc: Pavel Machek Cc: Arnaldo Carvalho de Melo Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Namhyung Kim Cc: joro@8bytes.org Link: https://lkml.kernel.org/r/1532533683-5988-2-git-send-email-joro@8byte= s.org Signed-off-by: Sasha Levin --- arch/x86/mm/fault.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index e0a34b0d381e..c4dffae5d939 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -273,8 +273,6 @@ static noinline int vmalloc_fault(unsigned long address= ) if (!(address >=3D VMALLOC_START && address < VMALLOC_END)) return -1; =20 - WARN_ON_ONCE(in_nmi()); - /* * Synchronize this task's top level page-table * with the 'reference' page table. --=20 2.17.1