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 CA562C433FE for ; Mon, 10 Jan 2022 22:32:18 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 2BB236B0073; Mon, 10 Jan 2022 17:32:17 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 20D6D6B0078; Mon, 10 Jan 2022 17:32:17 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D76B06B0073; Mon, 10 Jan 2022 17:32:16 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0042.hostedemail.com [216.40.44.42]) by kanga.kvack.org (Postfix) with ESMTP id C12B86B0074 for ; Mon, 10 Jan 2022 17:32:16 -0500 (EST) Received: from smtpin23.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 7E223181E7860 for ; Mon, 10 Jan 2022 22:32:16 +0000 (UTC) X-FDA: 79015827072.23.BCF83F6 Received: from NAM12-DM6-obe.outbound.protection.outlook.com (mail-dm6nam12on2047.outbound.protection.outlook.com [40.107.243.47]) by imf17.hostedemail.com (Postfix) with ESMTP id DFA1F40004 for ; Mon, 10 Jan 2022 22:32:15 +0000 (UTC) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=hK8HDs+RD7t1s6C//7qIiwFsPGzl2sxScZmSJY4hReRjjUd/s5GLWWn8X+9Dmaq3m1juJTi62gulRfzJ0TdlIl1vAqu7nT3La2XN07fZX4ofvOIWHykKcqghHuhSb2f4Ik1l/64x3wD3fIpe1VLt7x7T3QHxH5xcqRWiW69bIwDYgzWvjT6HkvpKzJ+2je13a+EDPl2hzfIKfAfFm411yddmM5sIVmbIahTJyoomRSZDnplx6XQHcYMzgEvfM1s9jFi30In9tveQ/5bReZD6b/CO6b+gr6Xamj9bAUDmASYyznmhoYCPMuuTcWm8/gJ92ud8zzqMtFlbfPBFN/tm5Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=YCjffP+SLGBP+BPzjKXa0wwbDZVs3L1+wYtZx6zZPY0=; b=JT6ajjG/TR4/EpukFpiVTf/56mxXMfAfqv8HIqpyQioNfYmhub9cGa6ItiHw9VuYX+aP7dgxzlF9eTSM+K+A/VnszXRuLWBJpsJQ7BJzNnn73JWAcX6pyXc00UQvXE3AzJHFhEAvjt0UwRfneNYv6HR4NbvnbHdVFug0TqZQxZiXrotpp/ERPDfosg4my+zzLCFCAb4/VPO6hcRFOfN5Q7hrIWa9gK6ODa7BBy4y08I728njzMp4hhL48D3PUGYnyIouPwTBHOk34ynzoDJKQfh6b6hgzKaJMVZ4mxAYz2aqywUAogu//IVfpiAy7lfB4JTXZKbiXevgB1+yFmLQ/g== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=linux-foundation.org smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=YCjffP+SLGBP+BPzjKXa0wwbDZVs3L1+wYtZx6zZPY0=; b=Y0purfcJGylh5kjE9r7RnrQzmp5mpdFSuTkOR5AmL9uKF22FOhszaVCtJ5P8FoCmK/R1LSsyUit3fiDVo2LnnejfS6TOxOfPoxOIec4KTDnONDIi9AsuI9YO4WVnzlPH+kfLK6eUGvjvAj+vyLZdY8WQV/h85R8R7ebk/owW/M8= Received: from BN0PR04CA0143.namprd04.prod.outlook.com (2603:10b6:408:ed::28) by BN6PR12MB1777.namprd12.prod.outlook.com (2603:10b6:404:104::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4867.7; Mon, 10 Jan 2022 22:32:14 +0000 Received: from BN8NAM11FT013.eop-nam11.prod.protection.outlook.com (2603:10b6:408:ed:cafe::9f) by BN0PR04CA0143.outlook.office365.com (2603:10b6:408:ed::28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4867.9 via Frontend Transport; Mon, 10 Jan 2022 22:32:14 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; Received: from SATLEXMB04.amd.com (165.204.84.17) by BN8NAM11FT013.mail.protection.outlook.com (10.13.176.182) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.4867.9 via Frontend Transport; Mon, 10 Jan 2022 22:32:14 +0000 Received: from alex-MS-7B09.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.17; Mon, 10 Jan 2022 16:32:13 -0600 From: Alex Sierra To: , , , , , CC: , , , , , , Subject: [PATCH v3 03/10] mm/gup: fail get_user_pages for LONGTERM dev coherent type Date: Mon, 10 Jan 2022 16:31:54 -0600 Message-ID: <20220110223201.31024-4-alex.sierra@amd.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220110223201.31024-1-alex.sierra@amd.com> References: <20220110223201.31024-1-alex.sierra@amd.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 65a6ba3b-82c1-44c8-53ea-08d9d4890ced X-MS-TrafficTypeDiagnostic: BN6PR12MB1777:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:3276; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(4636009)(36840700001)(46966006)(40470700002)(508600001)(40460700001)(36756003)(8936002)(81166007)(5660300002)(86362001)(316002)(6666004)(1076003)(356005)(54906003)(7416002)(7696005)(110136005)(4326008)(8676002)(44832011)(2616005)(70206006)(426003)(2906002)(70586007)(336012)(186003)(26005)(16526019)(36860700001)(47076005)(82310400004)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Jan 2022 22:32:14.1655 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 65a6ba3b-82c1-44c8-53ea-08d9d4890ced X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT013.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR12MB1777 X-Rspamd-Queue-Id: DFA1F40004 X-Stat-Signature: 71zhd98qf9s6dwgairpepczjtdigqbee Authentication-Results: imf17.hostedemail.com; dkim=pass header.d=amd.com header.s=selector1 header.b=Y0purfcJ; dmarc=pass (policy=quarantine) header.from=amd.com; spf=pass (imf17.hostedemail.com: domain of Alex.Sierra@amd.com designates 40.107.243.47 as permitted sender) smtp.mailfrom=Alex.Sierra@amd.com X-Rspamd-Server: rspam08 X-HE-Tag: 1641853935-37213 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.004103, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Avoid long term pinning for Coherent device type pages. This could interfere with their own device memory manager. For now, we are just returning error for PIN_LONGTERM Coherent device type pages. Eventually, these type of pages will get migrated to system memory, once the device migration pages support is added. Signed-off-by: Alex Sierra --- mm/gup.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/mm/gup.c b/mm/gup.c index 886d6148d3d0..9c8a075d862d 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -1720,6 +1720,12 @@ static long check_and_migrate_movable_pages(unsign= ed long nr_pages, * If we get a movable page, since we are going to be pinning * these entries, try to move them out if possible. */ + if (is_device_page(head)) { + WARN_ON_ONCE(is_device_private_page(head)); + ret =3D -EFAULT; + goto unpin_pages; + } + if (!is_pinnable_page(head)) { if (PageHuge(head)) { if (!isolate_huge_page(head, &movable_page_list)) @@ -1750,6 +1756,7 @@ static long check_and_migrate_movable_pages(unsigne= d long nr_pages, if (list_empty(&movable_page_list) && !isolation_error_count) return nr_pages; =20 +unpin_pages: if (gup_flags & FOLL_PIN) { unpin_user_pages(pages, nr_pages); } else { --=20 2.32.0