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Wed, 13 Mar 2019 14:01:38 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Mellanox.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=bui4y6cUdhlgn0tx/U3KOjV3erH9xFwzkKyA1einVHM=; b=CI6X4c5+MHvzWre9bVqXZ8hzmF6ekWBQBzg3dYNZcsM+vMBerR46VvFjFaz38oqar5LLOIkt3HN0W0QAIKAdghQAFla00ZWTwC8897UxF9N/Q9N+2er6/uLnAWgXk7iQdQRwYMSlN/xWLYH4abhrK7ucxcrT6Xr9TN4zcV5axuM= Received: from DBBPR05MB6570.eurprd05.prod.outlook.com (20.179.44.81) by DBBPR05MB6490.eurprd05.prod.outlook.com (20.179.43.22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1709.13; Wed, 13 Mar 2019 18:01:33 +0000 Received: from DBBPR05MB6570.eurprd05.prod.outlook.com ([fe80::5d59:2e1c:c260:ea6f]) by DBBPR05MB6570.eurprd05.prod.outlook.com ([fe80::5d59:2e1c:c260:ea6f%2]) with mapi id 15.20.1709.011; Wed, 13 Mar 2019 18:01:33 +0000 From: Jason Gunthorpe To: Andrew Morton CC: Jerome Glisse , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , Felix Kuehling , =?iso-8859-1?Q?Christian_K=F6nig?= , Ralph Campbell , John Hubbard , Dan Williams Subject: Re: [PATCH 00/10] HMM updates for 5.1 Thread-Topic: [PATCH 00/10] HMM updates for 5.1 Thread-Index: AQHUt/NUbGfMj/dYmUKscdo97gNJJKYJB9YAgAD2swCAAB8gAA== Date: Wed, 13 Mar 2019 18:01:33 +0000 Message-ID: <20190313180128.GV19891@mellanox.com> References: <20190129165428.3931-1-jglisse@redhat.com> <20190313012706.GB3402@redhat.com> <20190313091004.b748502871ba0aa839b924e9@linux-foundation.org> In-Reply-To: <20190313091004.b748502871ba0aa839b924e9@linux-foundation.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: YQBPR0101CA0025.CANPRD01.PROD.OUTLOOK.COM (2603:10b6:c00::38) To DBBPR05MB6570.eurprd05.prod.outlook.com (2603:10a6:10:d1::17) x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [24.137.65.181] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: a97e40f5-0dbc-4a95-33ac-08d6a7dded59 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600127)(711020)(4605104)(4618075)(2017052603328)(7153060)(7193020);SRVR:DBBPR05MB6490; 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x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: 0PXsCFSIDI+UlkaRWtKtwu1Vfx3ZB8OMQsNDTdL3Ip2bSbOacsiEJWYGrNpEoh6y7wu/N6KNa1c7+oRNrsWmFoM9+7MtJCe0I/DuiUVVZnC9E90xp2x720KqodvXoJFlgPF1l2C3S6nQ1WAuZTPWtXgW987KJs5mgticawjUNN+lHvSKqJl1x1OUSXzYmpYRFD4cmrBlL8mVYbKTZ/c1fjMdX51pAa25NKXFXAwJyVpmtK+OeYjmoK0vcp7Dpu1gR3wDvjjS82rth2yrsQooyiXLFqKfQi2UVvfKXSvnv5j5O2ZBl5V4jAEevP4z7agcdbLUBv7Vhqv573AdrNgL1zZDt3ePYao/oDzdwnw2ByEfRh7aloXGKG092lxwa8avwKGh4nPgGd22s5Md12Is3xDJZdkX6m/ltlu+w76unQI= Content-Type: text/plain; charset="iso-8859-1" Content-ID: <6D1EB43616A9974BBFE6D51BAB60AD43@eurprd05.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: Mellanox.com X-MS-Exchange-CrossTenant-Network-Message-Id: a97e40f5-0dbc-4a95-33ac-08d6a7dded59 X-MS-Exchange-CrossTenant-originalarrivaltime: 13 Mar 2019 18:01:33.6344 (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-Transport-CrossTenantHeadersStamped: DBBPR05MB6490 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Mar 13, 2019 at 09:10:04AM -0700, Andrew Morton wrote: > On Tue, 12 Mar 2019 21:27:06 -0400 Jerome Glisse wro= te: >=20 > > Andrew you will not be pushing this patchset in 5.1 ? >=20 > I'd like to. It sounds like we're converging on a plan. >=20 > It would be good to hear more from the driver developers who will be > consuming these new features - links to patchsets, review feedback, > etc. Which individuals should we be asking? Felix, Christian and > Jason, perhaps? At least the Mellanox driver patch looks like a good improvement: https://patchwork.kernel.org/patch/10786625/ 5 files changed, 202 insertions(+), 452 deletions(-) In fact it hollows out the 'umem_odp' driver abstraction we already had in the RDMA core. So, I fully expect to see this API used in mlx5 and RDMA-core after it is merged. We've done some testing now, and there are still some outstanding questions on the driver parts, but I haven't seen anything fundamentally wrong with HMM mirror come up. Jason