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Thu, 8 Nov 2018 10:35:57 +0000 Received: from AM6PR08MB3397.eurprd08.prod.outlook.com ([fe80::19c8:4ac3:f079:622c]) by AM6PR08MB3397.eurprd08.prod.outlook.com ([fe80::19c8:4ac3:f079:622c%2]) with mapi id 15.20.1294.034; Thu, 8 Nov 2018 10:35:57 +0000 From: Steve Capper To: Anshuman Khandual CC: "linux-mm@kvack.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , Suzuki Poulose , Punit Agrawal , Will Deacon , Steven Price , Catalin Marinas , "mhocko@kernel.org" , "akpm@linux-foundation.org" , "mike.kravetz@oracle.com" , "n-horiguchi@ah.jp.nec.com" , nd Subject: Re: [PATCH V3 4/5] arm64/mm: Enable HugeTLB migration Thread-Topic: [PATCH V3 4/5] arm64/mm: Enable HugeTLB migration Thread-Index: AQHUatC35ZDMGgpmQkaPS4VxvzQLUqVFx/wA Date: Thu, 8 Nov 2018 10:35:57 +0000 Message-ID: <20181108103545.c634kha6kpgpy34q@capper-debian.cambridge.arm.com> References: <1540299721-26484-1-git-send-email-anshuman.khandual@arm.com> <1540299721-26484-5-git-send-email-anshuman.khandual@arm.com> In-Reply-To: <1540299721-26484-5-git-send-email-anshuman.khandual@arm.com> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: NeoMutt/20170113 (1.7.2) x-originating-ip: [217.140.96.140] x-clientproxiedby: DM5PR18CA0062.namprd18.prod.outlook.com (2603:10b6:3:22::24) To AM6PR08MB3397.eurprd08.prod.outlook.com (2603:10a6:20b:43::30) authentication-results: spf=none (sender IP is ) smtp.mailfrom=Steve.Capper@arm.com; 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received-spf: None (protection.outlook.com: arm.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: ppIL7tPgE5AkJe4nf9UEocZOgFU7AHqPqLddANwzWuugqDMxDZOm3zzNxiIqW2DTJSsoPTiopDr1EqLfYl3GghUGAl0XAeRtB7Au3OAfLKgiUbRv4DWa288RjAoWG0i00AOyC/n0AvufGyL+tdYqDWOsTgIlsq1y54NwYsh4Prtd3VyQhMxdzSPyCpBrLO/I24bQhQjuV53X9BL9fjjHB6qEpx4ZkLCpTpLkqijE5lbCr7z6Xs9/zF+/p/QOj+z+QCaS2imqJXlHfCVDO4AejUoTHN+Ni/GuXHXksKka97xxK2ekjTc7CXweobscahv3Y937PIqYdcKKEiL+XKFMOVnfrLK3CI8nmvnZwG2gGq8= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="us-ascii" Content-ID: <1A8C0C0B04CEEA41863DB68C42ADF47C@eurprd08.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-Network-Message-Id: 7d708929-3311-4adb-b14b-08d64565f7e2 X-MS-Exchange-CrossTenant-originalarrivaltime: 08 Nov 2018 10:35:57.7349 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM6PR08MB3559 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Oct 23, 2018 at 06:32:00PM +0530, Anshuman Khandual wrote: > Let arm64 subscribe to generic HugeTLB page migration framework. Right no= w > this only works on the following PMD and PUD level HugeTLB page sizes wit= h > various kernel base page size combinations. >=20 > CONT PTE PMD CONT PMD PUD > -------- --- -------- --- > 4K: NA 2M NA 1G > 16K: NA 32M NA > 64K: NA 512M NA >=20 > Reviewed-by: Naoya Horiguchi > Signed-off-by: Anshuman Khandual Reviewed-by: Steve Capper > --- > arch/arm64/Kconfig | 4 ++++ > 1 file changed, 4 insertions(+) >=20 > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > index a8ae30f..4b3e269 100644 > --- a/arch/arm64/Kconfig > +++ b/arch/arm64/Kconfig > @@ -1331,6 +1331,10 @@ config SYSVIPC_COMPAT > def_bool y > depends on COMPAT && SYSVIPC > =20 > +config ARCH_ENABLE_HUGEPAGE_MIGRATION > + def_bool y > + depends on HUGETLB_PAGE && MIGRATION > + > menu "Power management options" > =20 > source "kernel/power/Kconfig" > --=20 > 2.7.4 >=20