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AJvYcCWCcDz6JGe0m5UQL57QICNoYa1KqKntCw5kBfCXBXN6I9BRrMBOQv8ezpRoXX9Dddx7JVcFA6FcTg==@kvack.org X-Gm-Message-State: AOJu0Yx+jidELPXjXhQ8yUJiZYETNGd6RFw9F49/3mWUX+nVyb2aISjQ 4v945PqycY2N+PGJ78F8Wldjv2J70B8iRVWSbDwGYziPDxzlSl4SbEZr/XH7uD83HllY8ntAZIf 0vKDbCq0brCd3T3d6fsmi7GKzyr03BGByFNvEIwKntA== X-Gm-Gg: AY/fxX7rmQaY40XsNBRyV9zrGLCPBcTvIZdHhU2B2c47biDrpYMsWORd8ZPdbGWz7NT ANmAOXa97Z4aOLStxxebkifYM47ABiA1/ZzmjcNqq7c0Eetgo6ZO8YZTn+TvaluTNoibBItf03n NStHASqmewAvFwz/1XqkO8R4Pw6qpzBvy62sa6t+r9KEdL9Eru8JWV2zJebC7JpWXWP3XL/jM8n nbZ2QXC2H+FU8f1SXMkZgNgkxWOAIOoLAFd0yHtqOOtIfG+pKKOV/q5rJDQdWl2bgxiWZPWbPTb NFgG6h01Ci+UjK+lGrYNunJ1kGjQKSh2nCKa X-Google-Smtp-Source: AGHT+IG7R8OufzxbkFMNpnBpqEEtRO/h0PChaYqg3fbSuA3NHtdOdOdeSWlvgqHDikQUpiHUXPkzTwN9tQJ5alYq+AI= X-Received: by 2002:a05:6402:5112:b0:64b:ea6b:a884 with SMTP id 4fb4d7f45d1cf-64bea6baac4mr14256712a12.17.1766513853843; Tue, 23 Dec 2025 10:17:33 -0800 (PST) MIME-Version: 1.0 References: <20251206230222.853493-1-pratyush@kernel.org> <20251206230222.853493-9-pratyush@kernel.org> In-Reply-To: <20251206230222.853493-9-pratyush@kernel.org> From: Pasha Tatashin Date: Tue, 23 Dec 2025 13:16:57 -0500 X-Gm-Features: AQt7F2o9lKh-MiYjTN0jydTh4lXfEZrS5Ed5W1ywUvAOmrIraj_P1WZBiW42-WU Message-ID: Subject: Re: [RFC PATCH 08/10] mm: hugetlb: disable CMA if liveupdate is enabled To: Pratyush Yadav Cc: Mike Rapoport , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Suren Baghdasaryan , Michal Hocko , Jonathan Corbet , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Muchun Song , Oscar Salvador , Alexander Graf , David Matlack , David Rientjes , Jason Gunthorpe , Samiullah Khawaja , Vipin Sharma , Zhu Yanjun , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-doc@vger.kernel.org, kexec@lists.infradead.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Server: rspam02 X-Stat-Signature: k34bb18kwiw7a5ojhjrg6i8ycmuqpdio X-Rspam-User: X-Rspamd-Queue-Id: 5637C140013 X-HE-Tag: 1766513855-655997 X-HE-Meta: U2FsdGVkX19HOL7bj9wZvDe37tJvIQOsOzRjlbLFxpiowFUMqrDwlw7qxUS8+mruhFP6qnqSexnJdJjtXzzaqq7vneBAB8zRRYkY8xrlTd9XFb+Buz9ZpDVly+kasaBxe6FxxzHEZ4oeD/afttYOVpyFBuD9I9w4TvbBMnx52Kocb+GK1zpc5nVz3CJuoGSOLNg5HYkNccjrEFRRjaFtB71wmMoh5cctOWqt+sHYpTtaZhxGWM6Zv5Wy3o7WFJXRm/2Nxj2/nKBkAKmoqzBUhrY9pNPegsuUVt5oxvuN4+JiC9RfF+cQSMgOGnImcvy6iRo59y3WHtOcpIJYS7Js1kWBbEWrJUx7mN4uz3Y6k88uFS5H30j5TCp4ICCWJvN14s1LS4WQ1lkqOqKycR/e2rQqdCfygzhKISoordTBuJxfUKvOq24PwMEO5NE/0cYmmlIgtUMEvn0ynv+uhfhGDEp75qlrgesFmvmLaPQepXDM/S5FTIhhxlykTiZ2auMDjz+5uT0GDdQoCdZQ7zZrNYtrca77y5x0dcyURhuYZd9x6wJnAwFA3A/fnt7/kUL6tiELmI4mOni53nWcp9ekRhLA/VtfCIzlJh2r9uMP16SGtSOsIEoCPEsjQeq8+BLEKyLd13VvnCa1/eLBLKcRpAbdagSkbhw3lAhLrYUp+ouucvY2ajiFzkVnFt/ChpkKtDxNwetF14p10pErid2OytT6JCL8zjTqxwNvinzHIrAgxHsZUkeiXFxJgnoRxR/CQ3gBj0e9np2YglIKnaKZUvsauFry44EX+f8QLnn59ppygC1L5n0G/h3hg9oKQljQncgQ/++yifFca9oP/h4CVQy9yD6h4b5QiUVIH92pxDoz3n2uLgBvuK451nrCZPcOKzxTuTCq1IA602D3NpExG0FYSXXX/b1S 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: List-Subscribe: List-Unsubscribe: On Sat, Dec 6, 2025 at 6:03=E2=80=AFPM Pratyush Yadav = wrote: > > Hugetlb live update support does not yet work with CMA. Print a warning > and disable CMA if the config for live updating hugetlb is enabled, and > liveupdate is enabled at runtime. Could you please elaborate this commit to explain why it is not supported, and what it would take to support CMA. Thanks, Pasha