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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 415D4EC8733 for ; Thu, 7 Sep 2023 15:07:48 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 7D5A48D0008; Thu, 7 Sep 2023 11:07:47 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 70E568D0001; Thu, 7 Sep 2023 11:07:47 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 539328D0008; Thu, 7 Sep 2023 11:07:47 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 3F0D38D0001 for ; Thu, 7 Sep 2023 11:07:47 -0400 (EDT) Received: from smtpin06.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id F279914014E for ; Thu, 7 Sep 2023 15:07:46 +0000 (UTC) X-FDA: 81210130932.06.E05F157 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.120]) by imf09.hostedemail.com (Postfix) with ESMTP id 694F014001A for ; Thu, 7 Sep 2023 15:07:44 +0000 (UTC) Authentication-Results: imf09.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b=TkkQjplK; dmarc=pass (policy=none) header.from=intel.com; spf=pass (imf09.hostedemail.com: domain of dave.hansen@intel.com designates 192.55.52.120 as permitted sender) smtp.mailfrom=dave.hansen@intel.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1694099264; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=tegXt8H4GqIs9pd9JuwuDFIteUSWjZ+yfenTAdbahT8=; b=4Y5XvlH2aEFzbF77TBq6p5rZP32ghF5dtMM4xQ/vtYWddhMSFw/MtnFhSNDM+XLVKZ5C/J SZqi7MmF1fGa/+kUCRN6ogHFRGGRg1BK6Z/JGohDYmUUPGcG4MjjQ5Mkj29/8gxziicGmP 4PG1ydnjvJ+zkov6YbRu7kPa7dTuHf8= ARC-Authentication-Results: i=1; imf09.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b=TkkQjplK; dmarc=pass (policy=none) header.from=intel.com; spf=pass (imf09.hostedemail.com: domain of dave.hansen@intel.com designates 192.55.52.120 as permitted sender) smtp.mailfrom=dave.hansen@intel.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1694099264; a=rsa-sha256; cv=none; b=GFFmhobrwtd7h1Ycy8l5Pi2TMMAdZ5qe09KX6XjcZ6PeCA3wPfWVw39RRm1G2EUEA3DGQ2 z15n8jkrWHzejs3sUWG3ScDRHGDZNT9g5DVs/DpTXBc6U/0RUxf4wgrRVzM/xzn4T4OBKb Rcgzw9LroFRIHkxu+O3wEaOH4/gYJrM= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694099264; x=1725635264; h=message-id:date:mime-version:subject:from:to:cc: references:in-reply-to:content-transfer-encoding; bh=tegXt8H4GqIs9pd9JuwuDFIteUSWjZ+yfenTAdbahT8=; b=TkkQjplKrD7qgInFzXw3Jce+NMCijvnENhoVnh+ld+zOA/micJ7xaNCA RKO0+p3RaM/UwoIzJ0oqdk1XUq3z2D7L+myB9vTSmBsp9PHK4BMpbMCNL xJY6ebjelaOaQzeo2DgVektLXEHtELCQMQSuSMjmYOrZXb5QwqE/a6DZ3 p0TZhmi1Cva9+gxdQTHU/cjj8CIL8DV/jDlBxjIPw4SNdIYXTI5p88Z37 /8mh6hdpCjVpSijI/1psW00shKc5+N6SkQGQGHZzlM9NW8Qo24/gZxHsz ArldF4Fin4VF2LDbSKEsS6fYd4MRQ5af7XgszaFvwGQ87T2lHQhGPDQkO A==; X-IronPort-AV: E=McAfee;i="6600,9927,10826"; a="376286323" X-IronPort-AV: E=Sophos;i="6.02,235,1688454000"; d="scan'208";a="376286323" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Sep 2023 08:04:38 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10826"; a="988806618" X-IronPort-AV: E=Sophos;i="6.02,235,1688454000"; d="scan'208";a="988806618" Received: from ningle-mobl2.amr.corp.intel.com (HELO [10.209.13.77]) ([10.209.13.77]) by fmsmga006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Sep 2023 08:04:37 -0700 Message-ID: <81379d2d-4bb4-2384-5612-fdc82828cb0f@intel.com> Date: Thu, 7 Sep 2023 08:04:36 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.15.0 Subject: Re: [PATCH 3/3] /dev/mem: Do not map unaccepted memory Content-Language: en-US From: Dave Hansen To: "Kirill A. Shutemov" Cc: Adrian Hunter , Borislav Petkov , Andrew Morton , Vlastimil Babka , Mike Rapoport , Lorenzo Stoakes , Tom Lendacky , Baoquan He , Vivek Goyal , Dave Young , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-coco@lists.linux.dev, linux-efi@vger.kernel.org, kexec@lists.infradead.org References: <20230906073902.4229-1-adrian.hunter@intel.com> <20230906073902.4229-4-adrian.hunter@intel.com> <9ffb7a3b-cf20-617a-e4f1-8a6a8a2c5972@intel.com> <20230907142510.vcj57cvnewqt4m37@box.shutemov.name> <7a50d04f-63ee-a901-6f39-7d341e423a77@intel.com> In-Reply-To: <7a50d04f-63ee-a901-6f39-7d341e423a77@intel.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 694F014001A X-Rspam-User: X-Rspamd-Server: rspam02 X-Stat-Signature: ryq6pon4ndw7a6zbp53x5ks649gijopk X-HE-Tag: 1694099264-241397 X-HE-Meta: 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 xf8JH56h uIeRlKup02iy88qtU76x3XFR4oaSWLRO5rNl+Vgc1GSSqMishJ+ivCRTxxuBzGaEqbiwlgqYRgGkHSkgFSitVUCxbsXWWKP+bPckryba77i47kyEStpBY4eF8b/9pTHtOGP+Tm8PvmcMY89nbzimoUGq5X0C+DY5+a5bA1HlKQajOLVo= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 9/7/23 07:46, Dave Hansen wrote: > Can a line of code in this patch even run in the face of IO_STRICT_DEVMEM=y? Gah, I meant plain old STRICT_DEVMEM=y.