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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: mdpvv8Wg76jgS0g+vjM2ejjZh4TdJVU/PQHbDnP/ayCIKg2Ke1grvoVK2DV6DvjBXoEjZFhX2PuvXbd8rd5TU0O0mr4IAYkMCxj3RHZigtvAPyaOzlnF+jX0m4dRXGh6GuAqHn+KIkDU6veVTR3JqqH4SLn+g8GZG2Ut7Cn2xat1CvZ6rdI/CPCOoZeEGcT+GRQFWIMapodjL/9DP20oT+94gfAP2YLmtMSATTayWFhf5y8FiohZnXUCG+FtATBHle7xZuzpucaP0pAyylW4cAqPQlV0vSVAP0fsDVLacQDkQVvl24rhv2Vx4VVkAJsqbRWMt27BBihwMFfdlNR1ChCXCF844UDY7B4BuMrJqQjXOoEojwaZu4H+rE1GxaFOarStvHmI7O7Gw2GX2mPmjl7GSjmwYS6kVyPzTaf1Mb0= Content-Type: text/plain; charset="iso-8859-1" Content-ID: <54A1222541CC9C469C907705C8F0722E@namprd22.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: mips.com X-MS-Exchange-CrossTenant-Network-Message-Id: 227ba9c0-1117-4909-342c-08d69d229b80 X-MS-Exchange-CrossTenant-originalarrivaltime: 28 Feb 2019 02:15:28.2252 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-id: 463607d3-1db3-40a0-8a29-970c56230104 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MWHPR2201MB1469 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, Feb 27, 2019 at 05:05:45PM +0000, Steven Price wrote: > For mips, we don't support large pages on 32 bit so add stubs returning 0= . So far so good :) > For 64 bit look for _PAGE_HUGE flag being set. This means exposing the > flag when !CONFIG_MIPS_HUGE_TLB_SUPPORT. Here I have to ask why? We could just return 0 like the mips32 case when CONFIG_MIPS_HUGE_TLB_SUPPORT=3Dn, let the compiler optimize the whole thing out and avoid redundant work at runtime. This could be unified too in asm/pgtable.h - checking for CONFIG_MIPS_HUGE_TLB_SUPPORT should be sufficient to cover the mips32 case along with the subset of mips64 configurations without huge pages. Thanks, Paul