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=-3.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 816D9C3A59C for ; Fri, 16 Aug 2019 06:54:52 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 473BB21655 for ; Fri, 16 Aug 2019 06:54:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="PpvYvAH+" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 473BB21655 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 6F9086B0007; Fri, 16 Aug 2019 02:54:50 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 6A9DC6B0008; Fri, 16 Aug 2019 02:54:50 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 59B966B000A; Fri, 16 Aug 2019 02:54:50 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0065.hostedemail.com [216.40.44.65]) by kanga.kvack.org (Postfix) with ESMTP id 307FB6B0008 for ; Fri, 16 Aug 2019 02:54:50 -0400 (EDT) Received: from smtpin21.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with SMTP id D3370181AC9AE for ; Fri, 16 Aug 2019 06:54:49 +0000 (UTC) X-FDA: 75827378298.21.twig97_4739b0ab4471d X-HE-Tag: twig97_4739b0ab4471d X-Filterd-Recvd-Size: 2448 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf41.hostedemail.com (Postfix) with ESMTP for ; Fri, 16 Aug 2019 06:54:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=GereEEuIF570EiKueg45SrscGAcsm53Jmc8D7sejksY=; b=PpvYvAH+KP58nV6izstqduOxt 6xZbDzbpIZtPEsO9CQjgqucxq7ocLr0SIseaBoGaJY4NFwkG+IubSesgQwLQBlyQE3QsLPmjVLVfY GmuBb7lhlEtEosRF0w8bMzrYlcr4QdtE+hmgmB54j6YH/sFwlDhne3pDBbJ/V4GtymNSSSbJVKDdF pelq9A1cESIRK5Y7ix33Fs7hOIYdzquVSs7ZiqG/uL2n4RaGVkxFDL4C94ertZYqFI3nEFVCoZA7F Y6FcG+haPB/P3GUmrdK2i7hzOmUO2/m5N1zpZf9U/PzEfFf4snYbd23glYY5wlJvTPC7/fEyFlLeX t8QFPJsVg==; Received: from [2001:4bb8:18c:28b5:44f9:d544:957f:32cb] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92 #3 (Red Hat Linux)) id 1hyW8D-0008H2-1p; Fri, 16 Aug 2019 06:54:40 +0000 From: Christoph Hellwig To: Dan Williams , Jason Gunthorpe Cc: Bharata B Rao , Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org Subject: add a not device managed memremap_pages v2 Date: Fri, 16 Aug 2019 08:54:30 +0200 Message-Id: <20190816065434.2129-1-hch@lst.de> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Content-Transfer-Encoding: quoted-printable 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: Hi Dan and Jason, Bharata has been working on secure page management for kvmppc guests, and one I thing I noticed is that he had to fake up a struct device just so that it could be passed to the devm_memremap_pages instrastructure for device private memory. This series adds non-device managed versions of the devm_request_free_mem_region and devm_memremap_pages functions for his use case. Changes since v1: - don't overload devm_request_free_mem_region - export the memremap_pages and munmap_pages as kvmppc can be a module