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Thu, 22 Oct 2026 01:38:29 -0700 (PDT) Received: from [192.168.1.18] ([83.231.69.9]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-48e25828e72sm10155819f8f.26.2026.10.22.01.38.28 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 22 Oct 2026 01:38:29 -0700 (PDT) Message-ID: <2f3e24cf-a09a-4355-a342-5eba8573d78c@gmail.com> Date: Thu, 22 Oct 2026 10:38:28 +0200 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 3/5] mm: hugetlb: track CMA reservations by pool To: Qi Zheng , muchun.song@linux.dev, david@kernel.org, osalvador@suse.de, akpm@linux-foundation.org Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Qi Zheng References: <29b35f7221c30f1dfa320a933f6095f37b612a37.1792651104.git.zhengqi.arch@bytedance.com> Content-Language: en-US From: "Jose A. Perez de Azpillaga" In-Reply-To: <29b35f7221c30f1dfa320a933f6095f37b612a37.1792651104.git.zhengqi.arch@bytedance.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 10/22/26 9:31 AM, Qi Zheng wrote: > From: Qi Zheng > > Introduce fixed default and PMD pool slots in preparation for PMD-sized > HugeTLB CMA support. Continue accepting only the architecture's existing > CMA page size and keep all gigantic sizes sharing the default pool. > PMD-sized pool support will be added in a subsequent patch. > > Select the pool for allocation, CMA-only checks and boot-time accounting. > Release folios through the CMA area that owns their physical memory, > including after demotion. > > Record each pool's successfully reserved capacity and remove > hugetlb_cma_validate_params(), since the per-pool CMA-only check handles > missing or empty reservations. > > Assisted-by: LLM > Signed-off-by: Qi Zheng LGTM so: Reviewed-by: Jose A. Perez de Azpillaga -- cheers, jose a. p-a