From: "Jose A. Perez de Azpillaga" <azpijr@gmail.com>
To: Qi Zheng <qi.zheng@linux.dev>,
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 <zhengqi.arch@bytedance.com>
Subject: Re: [PATCH v2 3/5] mm: hugetlb: track CMA reservations by pool
Date: Thu, 22 Oct 2026 10:38:28 +0200 [thread overview]
Message-ID: <2f3e24cf-a09a-4355-a342-5eba8573d78c@gmail.com> (raw)
In-Reply-To: <29b35f7221c30f1dfa320a933f6095f37b612a37.1792651104.git.zhengqi.arch@bytedance.com>
On 10/22/26 9:31 AM, Qi Zheng wrote:
> From: Qi Zheng <zhengqi.arch@bytedance.com>
>
> 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 <zhengqi.arch@bytedance.com>
LGTM so:
Reviewed-by: Jose A. Perez de Azpillaga <azpijr@gmail.com>
--
cheers,
jose a. p-a
next prev parent reply other threads:[~2026-10-22 8:38 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-22 7:31 [PATCH v2 0/5] mm: hugetlb: add CMA support for PMD-sized pages Qi Zheng
2026-10-22 7:31 ` [PATCH v2 1/5] mm: hugetlb: add explicit page size to hugetlb_cma Qi Zheng
2026-10-22 7:31 ` [PATCH v2 2/5] mm: hugetlb: group CMA pool and reservation state Qi Zheng
2026-10-22 7:31 ` [PATCH v2 3/5] mm: hugetlb: track CMA reservations by pool Qi Zheng
2026-10-22 8:38 ` Jose A. Perez de Azpillaga [this message]
2026-10-22 7:31 ` [PATCH v2 4/5] mm: hugetlb: avoid recursive CMA allocation during migration Qi Zheng
2026-10-22 8:51 ` Jose A. Perez de Azpillaga
2026-10-22 7:31 ` [PATCH v2 5/5] mm: hugetlb: enable CMA allocation for PMD-sized pages Qi Zheng
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