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received-spf: None (protection.outlook.com: wavecomp.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: 8jt+BVppR0Vb816sAwTQVXEmfvJS8UX31/SIqi1LS8KwFNkItVuCccfF40InI0eRNBWGPv4swBJNshjxVoEHQDtGOhX4G0gYAROsy2nSssGrX0I/H4rvl+k04FCexW7PH+XVAZrTrYx5zp2SU2tW8MV3OqmBi9JGJDspSzC9k07uBg29cRCsH4iIECei9wRmxnl5D8gNdgcTJ8RFoI6YlHn1HQnsyfrHOZ4fUVQVt54hpD5JinFs3+D1Qmcd7f/uof7VU4fuYb0huPdKZFA8mZ/7KoxDYqqHRZ0bkvNvoupdOh51suwpeuVB7f+WzU3BbSMHuvhpHQM+QH4U7M0nZF5zXeDISYdiEnaKx410DahMzD+I4P3X/lE4krQssIstG19tQuYolI0vTraKLrnkQb6JJ9BeQ94tBl0AcetVoAs= Content-Type: text/plain; charset="iso-8859-1" Content-ID: <166FB649BE7A0943BDD8181B357816BB@namprd22.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: mips.com X-MS-Exchange-CrossTenant-Network-Message-Id: 49a42e8a-b36c-444c-b2f5-08d6a256fb2e X-MS-Exchange-CrossTenant-originalarrivaltime: 06 Mar 2019 17:12:58.7825 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 463607d3-1db3-40a0-8a29-970c56230104 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: MWHPR2201MB1261 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: Hi Steven, On Wed, Mar 06, 2019 at 03:50:15PM +0000, Steven Price wrote: > walk_page_range() is going to be allowed to walk page tables other than > those of user space. For this it needs to know when it has reached a > 'leaf' entry in the page tables. This information is provided by the > p?d_large() functions/macros. >=20 > For mips, we only support large pages on 64 bit. >=20 > For 64 bit if _PAGE_HUGE is defined we can simply look for it. When not > defined we can be confident that there are no large pages in existence > and fall back on the generic implementation (added in a later patch) > which returns 0. >=20 > CC: Ralf Baechle > CC: Paul Burton > CC: James Hogan > CC: linux-mips@vger.kernel.org > Signed-off-by: Steven Price Acked-by: Paul Burton Thanks, Paul