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Fri, 10 May 2019 16:32:26 +0000 Received: from AT5PR8401MB1169.NAMPRD84.PROD.OUTLOOK.COM ([fe80::2884:44eb:25bf:b376]) by AT5PR8401MB1169.NAMPRD84.PROD.OUTLOOK.COM ([fe80::2884:44eb:25bf:b376%12]) with mapi id 15.20.1878.022; Fri, 10 May 2019 16:32:26 +0000 From: "Elliott, Robert (Servers)" To: Larry Bassel , "mike.kravetz@oracle.com" , "willy@infradead.org" , "dan.j.williams@intel.com" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , "linux-nvdimm@lists.01.org" Subject: RE: [PATCH, RFC 1/2] Add config option to enable FS/DAX PMD sharing Thread-Topic: [PATCH, RFC 1/2] Add config option to enable FS/DAX PMD sharing Thread-Index: AQHVBoGeTmkAemjoekib1TYYWlBJqqZkjkrQ Date: Fri, 10 May 2019 16:32:26 +0000 Message-ID: References: <1557417933-15701-1-git-send-email-larry.bassel@oracle.com> <1557417933-15701-2-git-send-email-larry.bassel@oracle.com> In-Reply-To: <1557417933-15701-2-git-send-email-larry.bassel@oracle.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [2601:2c3:877f:e23c:eda6:b2df:f285:610b] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: f23d3430-588f-45c8-b52f-08d6d56516c2 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600141)(711020)(4605104)(4618075)(2017052603328)(7193020);SRVR:AT5PR8401MB0785; 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charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: f23d3430-588f-45c8-b52f-08d6d56516c2 X-MS-Exchange-CrossTenant-originalarrivaltime: 10 May 2019 16:32:26.8565 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 105b2061-b669-4b31-92ac-24d304d195dc X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: AT5PR8401MB0785 X-OriginatorOrg: hpe.com X-HPE-SCL: -1 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-05-09_02:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1905100111 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > -----Original Message----- > From: Linux-nvdimm On Behalf Of > Larry Bassel > Sent: Thursday, May 09, 2019 11:06 AM > Subject: [PATCH, RFC 1/2] Add config option to enable FS/DAX PMD > sharing > > If enabled, sharing of FS/DAX PMDs will be attempted. > ... > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig ... > > +config MAY_SHARE_FSDAX_PMD > + def_bool y > + Is a config option really necessary - is there any reason to not choose to do this?