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=-3.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 B06EBC48BD6 for ; Thu, 27 Jun 2019 16:29:48 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 7775D2133F for ; Thu, 27 Jun 2019 16:29:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=Mellanox.com header.i=@Mellanox.com header.b="gFFEYLwE" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7775D2133F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mellanox.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 1617E8E0006; Thu, 27 Jun 2019 12:29:48 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 1398F8E0002; Thu, 27 Jun 2019 12:29:48 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0006B8E0006; Thu, 27 Jun 2019 12:29:47 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from mail-ed1-f70.google.com (mail-ed1-f70.google.com [209.85.208.70]) by kanga.kvack.org (Postfix) with ESMTP id A8DA58E0002 for ; Thu, 27 Jun 2019 12:29:47 -0400 (EDT) Received: by mail-ed1-f70.google.com with SMTP id f19so6318999edv.16 for ; Thu, 27 Jun 2019 09:29:47 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:dkim-signature:from:to:cc:subject:thread-topic :thread-index:date:message-id:references:in-reply-to:accept-language :content-language:content-id:content-transfer-encoding:mime-version; bh=Acwz3hHPfD+Le/jb5+cmcROosiINY+hQq7uRwwksQzk=; b=KtLmIF+le9p2NyuGkRBxHc2AD24LG/bT6ZTtGO9oIHQsYTB3c3Isoio2B+QYkALrWK UtT8onyrNQTG0weopzKQ9p/Kse7qY7yy0ys7b9NycTczeoEGnkypWiNOvdL013ncCi1N VTvb05Dq8YNPC3deWY/JPMfiU8HRHbLKV0hkM1vR/fVHPNgyaXTTiP2w/1d2cOLmjv3L gnYqN+yZ28HRpNTF6fmWECGr+0KXWdddsy7qx22+872ZSdUBPhyvKqhUJeUiCJmROQuZ kXiENSbgs0CbVD2cU2DieRv7+R0qukzn0AzFEmn6JoX0NjeSaM/FF7c9uvjhHHKZ/oDv pPNQ== X-Gm-Message-State: APjAAAVLiw9QBbEp2CjWOvm9eMXTx8S7wCIgg/sAFHjSJEDbyuA5MOuk oRrUlvwawqGZ9rxjjY99qQElQ9TlVD6Ael7BF/jZodmrv28EnpP1gH3XD76Z9I5YweUjLA/cWSM Y5kXbW8kVWZIKxa/L7JP2KhVIjsaFOBi4pZgp7GUwYqmHXR6TDwK2nCO6x/QwzFPayw== X-Received: by 2002:a50:ec03:: with SMTP id g3mr5388218edr.233.1561652987280; Thu, 27 Jun 2019 09:29:47 -0700 (PDT) X-Google-Smtp-Source: APXvYqwiWrM0TgK45T17ozTbiJqUqph/Dqyr6lsb4hi6s1dAvJSp+QgW5p7wep0ftMwen5Mc8NL0 X-Received: by 2002:a50:ec03:: with SMTP id g3mr5388165edr.233.1561652986680; Thu, 27 Jun 2019 09:29:46 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1561652986; cv=none; d=google.com; s=arc-20160816; b=jGNBbxyI/3Ax2iURYSC2SgF2pdyLhh+DhDLkSOdbAQ9TCoXMyDhAB0gS0VQ4JV8mbo dti9ESrXdSRnzqKcdE08cdNT12jPx9M9Q6FYg0iu4tXVk09VxFlMOvKLgQjUtyY9Xkz/ l/9qf7QrrleaLo5v8QPa6RSnPMf46Yk0M5il3oKfKbiL2xuO+8vnRqloH/mi4xscYJza 6essEahFUM4LY52YKoXP3kC1Q2iFpmW2Q+hqqZalp7nrlNbcDi3Bo0zmQvryV8p4xTB5 cAbNWmpGpSrMAv8dccx4PXHo3r2TD1Wh5AdQpK6fanHvD1tHeWNC1DGba48Vi/i7aGN/ 0gTA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:content-transfer-encoding:content-id:content-language :accept-language:in-reply-to:references:message-id:date:thread-index :thread-topic:subject:cc:to:from:dkim-signature; bh=Acwz3hHPfD+Le/jb5+cmcROosiINY+hQq7uRwwksQzk=; b=MMR0gry9oe+Mi3Hlxc3zIrtf5zxwMB1n4yWq+GzqcN5xeUgKnAH/g8NZA3/ECf3KH5 TAgO5zscx8HajeDC2mTSHw/MdHwqOejZdBbEL56bzz/itrjqksffglw279mKvMv/mwnn YFFApa2iVk7RUG1Z7SqJRVLkueC4WnYETUyELZRTDSRR8ZWbgtbmmaCzLwWzsOkIHdDr DPX6yWEobRaOxiK0R9xj2mkAIhAQzYHoGzz4G4m6C2UlzRahbcf0/Z2Wu7NwLsWBwhDM 18BWKnllTRDae5Wbyl8u6vFH1jGnxd2b5eytjkQAV9WlLKPz/HnowwQCeAU8OdCtZKf9 Twyg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@Mellanox.com header.s=selector2 header.b=gFFEYLwE; spf=pass (google.com: domain of jgg@mellanox.com designates 40.107.4.62 as permitted sender) smtp.mailfrom=jgg@mellanox.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=mellanox.com Received: from EUR03-DB5-obe.outbound.protection.outlook.com (mail-eopbgr40062.outbound.protection.outlook.com. [40.107.4.62]) by mx.google.com with ESMTPS id z9si2370025edz.403.2019.06.27.09.29.46 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 27 Jun 2019 09:29:46 -0700 (PDT) Received-SPF: pass (google.com: domain of jgg@mellanox.com designates 40.107.4.62 as permitted sender) client-ip=40.107.4.62; Authentication-Results: mx.google.com; dkim=pass header.i=@Mellanox.com header.s=selector2 header.b=gFFEYLwE; spf=pass (google.com: domain of jgg@mellanox.com designates 40.107.4.62 as permitted sender) smtp.mailfrom=jgg@mellanox.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=mellanox.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Mellanox.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Acwz3hHPfD+Le/jb5+cmcROosiINY+hQq7uRwwksQzk=; b=gFFEYLwEZzcaYgGPwF102oxi9KMrRut1jd93LscZWuscZkJ7vz97pan3/8x2vEXXJM9WtbJlA14NR8UcJbAkHW9w3JeIedSKTFFPtORHMOvOGhoGZb7RAvRv/Y5BxudV1nlvg+ILuTvFuVVL0MF4CwUE0spAe6YVXUlUxB7bc6I= Received: from VI1PR05MB4141.eurprd05.prod.outlook.com (10.171.182.144) by VI1PR05MB6032.eurprd05.prod.outlook.com (20.178.127.217) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2008.16; Thu, 27 Jun 2019 16:29:45 +0000 Received: from VI1PR05MB4141.eurprd05.prod.outlook.com ([fe80::f5d8:df9:731:682e]) by VI1PR05MB4141.eurprd05.prod.outlook.com ([fe80::f5d8:df9:731:682e%5]) with mapi id 15.20.2008.014; Thu, 27 Jun 2019 16:29:45 +0000 From: Jason Gunthorpe To: Christoph Hellwig CC: Dan Williams , =?iso-8859-1?Q?J=E9r=F4me_Glisse?= , Ben Skeggs , "linux-mm@kvack.org" , "nouveau@lists.freedesktop.org" , "dri-devel@lists.freedesktop.org" , "linux-nvdimm@lists.01.org" , "linux-pci@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Ralph Campbell Subject: Re: [PATCH 12/25] memremap: add a migrate_to_ram method to struct dev_pagemap_ops Thread-Topic: [PATCH 12/25] memremap: add a migrate_to_ram method to struct dev_pagemap_ops Thread-Index: AQHVLBqZBQCOhXKkekmD+Za0eny3n6avsW2A Date: Thu, 27 Jun 2019 16:29:45 +0000 Message-ID: <20190627162439.GD9499@mellanox.com> References: <20190626122724.13313-1-hch@lst.de> <20190626122724.13313-13-hch@lst.de> In-Reply-To: <20190626122724.13313-13-hch@lst.de> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: BYAPR03CA0020.namprd03.prod.outlook.com (2603:10b6:a02:a8::33) To VI1PR05MB4141.eurprd05.prod.outlook.com (2603:10a6:803:4d::16) authentication-results: spf=none (sender IP is ) smtp.mailfrom=jgg@mellanox.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [12.199.206.50] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 910ae93e-1c98-4933-e059-08d6fb1caa3b x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600148)(711020)(4605104)(1401327)(4618075)(2017052603328)(7193020);SRVR:VI1PR05MB6032; x-ms-traffictypediagnostic: VI1PR05MB6032: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:9508; x-forefront-prvs: 008184426E x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(366004)(396003)(346002)(39860400002)(376002)(136003)(199004)(189003)(6512007)(102836004)(5660300002)(7736002)(305945005)(6116002)(486006)(478600001)(476003)(81156014)(256004)(386003)(11346002)(53936002)(76176011)(3846002)(2616005)(52116002)(446003)(81166006)(6436002)(8936002)(68736007)(66066001)(6246003)(316002)(2906002)(54906003)(229853002)(99286004)(36756003)(6486002)(26005)(6506007)(186003)(64756008)(6916009)(8676002)(7416002)(66946007)(1076003)(66476007)(14454004)(4326008)(86362001)(66556008)(66446008)(73956011)(71190400001)(71200400001)(25786009)(33656002);DIR:OUT;SFP:1101;SCL:1;SRVR:VI1PR05MB6032;H:VI1PR05MB4141.eurprd05.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: mellanox.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: FQumiSKh7GVdRl14hBXAy3T/ENWqYM4HWMyt/KiMQB3yuvYG+MOIrLUCPq4S72Bqu5H/LaAUqWhI7Tr8MmgAWraK9rbKVPCD7phnzfo27BCXksIEnr+JiI8gC8Dkz4BoJWEulCIXVdw0MTHsUNYkf4YaA37Jj+hVFrb/3EAHXH56uihx5XRp67A0kIrQyIzowuvy9TMI00/W3AAZlgs8xR6rTn2nfawvNYsN6H0PQmYbU+RUQ2+60Uw5GlYfhzxUkZUBXL3GTMM2930c4vcFAHzQj/BOGwGVL7BXrCUqVPtvAy7rIu5zFs0PBD4C/zDx2ySDvoXcIZjXKZZtgXHwP25hvbKI4+zkbxKJn/yyiRnclDN67c5oFNBFejLblul4zRdK/fFAbZIVtSb6UpmyMqIdIxc06082NQNUV3bmkIg= Content-Type: text/plain; charset="iso-8859-1" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: Mellanox.com X-MS-Exchange-CrossTenant-Network-Message-Id: 910ae93e-1c98-4933-e059-08d6fb1caa3b X-MS-Exchange-CrossTenant-originalarrivaltime: 27 Jun 2019 16:29:45.6208 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: a652971c-7d2e-4d9b-a6a4-d149256f461b X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: jgg@mellanox.com X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR05MB6032 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 Wed, Jun 26, 2019 at 02:27:11PM +0200, Christoph Hellwig wrote: > This replaces the hacky ->fault callback, which is currently directly > called from common code through a hmm specific data structure as an > exercise in layering violations. >=20 > Signed-off-by: Christoph Hellwig > Reviewed-by: Ralph Campbell > --- > include/linux/hmm.h | 6 ------ > include/linux/memremap.h | 6 ++++++ > include/linux/swapops.h | 15 --------------- > kernel/memremap.c | 35 ++++------------------------------- > mm/hmm.c | 13 +++++-------- > mm/memory.c | 9 ++------- > 6 files changed, 17 insertions(+), 67 deletions(-) Reviewed-by: Jason Gunthorpe =20 I'ver heard there are some other use models for fault() here beyond migrate to ram, but we can rename it if we ever see them. > +static vm_fault_t hmm_devmem_migrate_to_ram(struct vm_fault *vmf) > { > - struct hmm_devmem *devmem =3D page->pgmap->data; > + struct hmm_devmem *devmem =3D vmf->page->pgmap->data; > =20 > - return devmem->ops->fault(devmem, vma, addr, page, flags, pmdp); > + return devmem->ops->fault(devmem, vmf->vma, vmf->address, vmf->page, > + vmf->flags, vmf->pmd); > } Next cycle we should probably rename this fault to migrate_to_ram as well and pass in the vmf.. Jason