From: Qi Zheng <qi.zheng@linux.dev>
To: Muchun Song <songmuchun@bytedance.com>,
Andrew Morton <akpm@linux-foundation.org>,
Oscar Salvador <osalvador@suse.de>,
David Hildenbrand <david@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>,
Vlastimil Babka <vbabka@kernel.org>,
Lorenzo Stoakes <ljs@kernel.org>, Michal Hocko <mhocko@suse.com>,
David Laight <david.laight.linux@gmail.com>,
"Liam R . Howlett" <liam@infradead.org>,
Suren Baghdasaryan <surenb@google.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Muchun Song <muchun.song@linux.dev>
Subject: Re: [PATCH v5 09/17] mm/sparse: initialize memory sections earlier
Date: Tue, 25 Aug 2026 20:49:45 +0800 [thread overview]
Message-ID: <babba0e1-a07e-4e98-a69b-cbba8f201c00@linux.dev> (raw)
In-Reply-To: <20260825084608.47437-10-songmuchun@bytedance.com>
On 8/25/26 4:46 PM, Muchun Song wrote:
> Upcoming HugeTLB bootmem changes need sparsemem section metadata before
> the HugeTLB bootmem allocation path runs. The memory sections are
> initialized from sparse_init(), which is called too late for that setup.
>
> Move the code that initializes sparsemem section metadata for memblock
> ranges into mm_core_init_early(), before free_area_init() and the HugeTLB
> bootmem setup. Rename the helper to sparse_sections_init() so the new
> caller describes the sparsemem-specific initialization step.
>
> This is a preparatory change.
>
> Signed-off-by: Muchun Song <songmuchun@bytedance.com>
> Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: Qi Zheng <qi.zheng@linux.dev>
Thanks,
Qi
next prev parent reply other threads:[~2026-08-25 12:50 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-25 8:45 [PATCH v5 00/17] mm: Introduce section-based vmemmap optimization for HugeTLB Muchun Song
2026-08-25 8:45 ` [PATCH v5 01/17] mm/sparse: relax struct mem_section size constraints Muchun Song
2026-08-25 8:45 ` [PATCH v5 02/17] mm/sparse-vmemmap: rename HVO order macros Muchun Song
2026-08-25 10:05 ` Qi Zheng
2026-08-25 8:45 ` [PATCH v5 03/17] mm/mm_init: skip initializing shared vmemmap tail pages Muchun Song
2026-08-25 9:30 ` Mike Rapoport
2026-08-25 10:15 ` Qi Zheng
2026-08-25 8:45 ` [PATCH v5 04/17] mm/sparse-vmemmap: initialize shared tail vmemmap pages on allocation Muchun Song
2026-08-25 9:30 ` Mike Rapoport
2026-08-25 10:40 ` Qi Zheng
2026-08-25 8:45 ` [PATCH v5 05/17] mm/sparse-vmemmap: support section-based vmemmap accounting Muchun Song
2026-08-25 10:47 ` Qi Zheng
2026-08-25 8:45 ` [PATCH v5 06/17] mm/mm_init: factor out pfn_to_zone() Muchun Song
2026-08-25 10:51 ` Qi Zheng
2026-08-25 8:45 ` [PATCH v5 07/17] mm/sparse-vmemmap: move helpers ahead of future callers Muchun Song
2026-08-25 10:54 ` Qi Zheng
2026-08-25 8:45 ` [PATCH v5 08/17] mm/sparse-vmemmap: support section-based vmemmap optimization Muchun Song
2026-08-25 9:30 ` Mike Rapoport
2026-08-25 12:38 ` Qi Zheng
2026-08-25 8:46 ` [PATCH v5 09/17] mm/sparse: initialize memory sections earlier Muchun Song
2026-08-25 12:49 ` Qi Zheng [this message]
2026-08-25 8:46 ` [PATCH v5 10/17] mm/hugetlb: switch HugeTLB to section-based vmemmap optimization Muchun Song
2026-08-25 13:12 ` Qi Zheng
2026-08-25 8:46 ` [PATCH v5 11/17] mm/sparse-vmemmap: remove SPARSEMEM_VMEMMAP_PREINIT support Muchun Song
2026-08-25 13:16 ` Qi Zheng
2026-08-25 8:46 ` [PATCH v5 12/17] mm/sparse: inline usemap allocation into sparse_init_nid() Muchun Song
2026-08-25 8:46 ` [PATCH v5 13/17] mm/sparse: remove section_map_size() Muchun Song
2026-08-25 8:46 ` [PATCH v5 14/17] mm/hugetlb: remove HUGE_BOOTMEM_HVO Muchun Song
2026-08-25 13:28 ` Qi Zheng
2026-08-25 8:46 ` [PATCH v5 15/17] mm/hugetlb: remove HUGE_BOOTMEM_CMA Muchun Song
2026-08-25 13:42 ` Qi Zheng
2026-08-25 8:46 ` [PATCH v5 16/17] mm/hugetlb: localize struct huge_bootmem_page Muchun Song
2026-08-25 13:38 ` Qi Zheng
2026-08-25 8:46 ` [PATCH v5 17/17] mm/hugetlb: localize HUGE_BOOTMEM_ZONES_VALID Muchun Song
2026-08-25 13:40 ` Qi Zheng
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