From: Muchun Song <muchun.song@linux.dev>
To: "David Hildenbrand (Arm)" <david@kernel.org>
Cc: Muchun Song <songmuchun@bytedance.com>,
Andrew Morton <akpm@linux-foundation.org>,
Oscar Salvador <osalvador@suse.de>,
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>,
Qi Zheng <qi.zheng@linux.dev>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v5 09/17] mm/sparse: initialize memory sections earlier
Date: Wed, 9 Sep 2026 20:58:08 +0800 [thread overview]
Message-ID: <7A0F5F1F-F724-478A-A34A-E9F9771E2EB7@linux.dev> (raw)
In-Reply-To: <e6335c78-a20a-4024-8980-097a922eb257@kernel.org>
> On Sep 9, 2026, at 20:48, David Hildenbrand (Arm) <david@kernel.org> wrote:
>
>
>>
>>>
>>> I have patches to get rid of __section_mark_present() and just set them all to
>>> SECTION_IS_EARLY|SECTION_IS_ONLINE such that we can just iterate early sections
>>> and get rid of that PRESENT monstrosity.
>>>
>>> Apart from that LGTM, even though I don't particularly enjoy splitting us now
>>> having two init entry points
>>>
>>> sparse_init
>>
>> Maybe this one should be sparse_memmap_init? If yes, it could be another separate
>> cleanup patch.
>
> It does way more than that. In my patches I factor some of sparse_init out and
> call it sparse_metadata_init() -- memmap and usemap.
OK, I'll leave this part untouched since you've already done the perfect
renaming.
Thanks.
>
> --
> Cheers,
>
> David
next prev parent reply other threads:[~2026-09-09 12:58 UTC|newest]
Thread overview: 54+ 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
2026-09-09 9:33 ` David Hildenbrand (Arm)
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
2026-09-09 9:36 ` David Hildenbrand (Arm)
2026-09-09 11:30 ` Muchun Song
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
2026-09-09 9:39 ` David Hildenbrand (Arm)
2026-09-09 12:49 ` Muchun Song
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
2026-09-09 9:56 ` David Hildenbrand (Arm)
2026-09-09 12:29 ` Muchun Song
2026-09-09 12:48 ` David Hildenbrand (Arm)
2026-09-09 12:58 ` Muchun Song [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
2026-08-26 2:38 ` Muchun Song
2026-08-26 3:24 ` Qi Zheng
2026-09-09 9:58 ` David Hildenbrand (Arm)
2026-09-09 13:08 ` Muchun Song
2026-09-09 13:39 ` David Hildenbrand (Arm)
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
2026-09-09 9:59 ` David Hildenbrand (Arm)
2026-08-25 8:46 ` [PATCH v5 12/17] mm/sparse: inline usemap allocation into sparse_init_nid() Muchun Song
2026-09-09 10:01 ` David Hildenbrand (Arm)
2026-08-25 8:46 ` [PATCH v5 13/17] mm/sparse: remove section_map_size() Muchun Song
2026-09-09 10:02 ` David Hildenbrand (Arm)
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
2026-08-28 4:20 ` [PATCH v5 00/17] mm: Introduce section-based vmemmap optimization for HugeTLB Andrew Morton
2026-09-09 9:31 ` David Hildenbrand (Arm)
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