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Fri, 16 Aug 2019 12:34:02 +0000 From: Jason Gunthorpe To: Christoph Hellwig CC: Dan Williams , Bharata B Rao , Andrew Morton , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , "linux-nvdimm@lists.01.org" Subject: Re: add a not device managed memremap_pages v2 Thread-Topic: add a not device managed memremap_pages v2 Thread-Index: AQHVU/97vsv9UEZaeUmMAUjVp5ftIKb9tb4A Date: Fri, 16 Aug 2019 12:34:01 +0000 Message-ID: <20190816123356.GE5412@mellanox.com> References: <20190816065434.2129-1-hch@lst.de> In-Reply-To: <20190816065434.2129-1-hch@lst.de> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: YTOPR0101CA0030.CANPRD01.PROD.OUTLOOK.COM (2603:10b6:b00:15::43) 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: [156.34.55.100] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 224ca08e-6004-4106-d8d1-08d722460498 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:VI1PR05MB5566; 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charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: Mellanox.com X-MS-Exchange-CrossTenant-Network-Message-Id: 224ca08e-6004-4106-d8d1-08d722460498 X-MS-Exchange-CrossTenant-originalarrivaltime: 16 Aug 2019 12:34:01.8214 (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: /fDhP4GxnHZM4uuZzIFlZH+M7EkC9pc8INPfsdv9qElewU8t04CK+YcKKjbnobqaDoS8qN36DE52skQOdlqdYw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR05MB5566 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 Fri, Aug 16, 2019 at 08:54:30AM +0200, Christoph Hellwig wrote: > Hi Dan and Jason, >=20 > 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. >=20 > This series adds non-device managed versions of the > devm_request_free_mem_region and devm_memremap_pages functions for > his use case. >=20 > Changes since v1: > - don't overload devm_request_free_mem_region > - export the memremap_pages and munmap_pages as kvmppc can be a module What tree do we want this to go through? Dan are you running a pgmap tree still? Do we know of any conflicts? Thanks, Jason