From: Usama Arif <usama.arif@linux.dev>
To: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>,
David Hildenbrand <david@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Madhavan Srinivasan <maddy@linux.ibm.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Mike Rapoport <rppt@kernel.org>, Lorenzo Stoakes <ljs@kernel.org>,
"Liam R. Howlett" <liam@infradead.org>,
Vlastimil Babka <vbabka@kernel.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Nicholas Piggin <npiggin@gmail.com>,
"Christophe Leroy (CS GROUP)" <chleroy@kernel.org>,
"Ritesh Harjani (IBM)" <ritesh.list@gmail.com>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>,
linuxppc-dev@lists.ozlabs.org,
Muchun Song <songmuchun@bytedance.com>
Subject: Re: [PATCH v3 15/19] mm/hugetlb_vmemmap: Move bootmem HVO setup to early init
Date: Wed, 3 Jun 2026 13:35:28 +0100 [thread overview]
Message-ID: <79118b43-78d2-42da-b552-ba8b5859fdc7@linux.dev> (raw)
In-Reply-To: <f9dd874a-b637-4740-9a63-8da66de323ca@linux.dev>
On 03/06/2026 13:24, Muchun Song wrote:
>
>
> On 2026/6/3 20:02, Usama Arif wrote:
>> On Tue, 2 Jun 2026 18:10:35 +0800 Muchun Song <songmuchun@bytedance.com> wrote:
>>
>>> Bootmem HugeTLB pages currently defer HVO setup to
>>> hugetlb_vmemmap_init_late(), because the optimization needs zone
>>> information.
>>>
>>> Now that zone initialization is available earlier, the bootmem HVO setup
>>> can be done directly from hugetlb_vmemmap_init_early(). This lets
>>> gigantic HugeTLB pages apply HVO as soon as they are allocated.
>>>
>>> Bootmem gigantic pages that span multiple zones are now filtered out
>>> when they are allocated, so the remaining bootmem gigantic pages seen by
>>> later hugetlb initialization are already zone-valid. As a result,
>>> hugetlb_vmemmap_init_late() no longer needs to handle bootmem HVO setup.
>>>
>>> Signed-off-by: Muchun Song <songmuchun@bytedance.com>
>>> ---
Acked-by: Usama Arif <usama.arif@linux.dev>
next prev parent reply other threads:[~2026-06-03 12:35 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-02 10:10 [PATCH v3 00/19] mm: Refactor bootmem gigantic hugepage allocation Muchun Song
2026-06-02 10:10 ` [PATCH v3 01/19] mm/hugetlb: Fix boot panic with CONFIG_DEBUG_VM and HVO bootmem pages Muchun Song
2026-06-02 10:10 ` [PATCH v3 02/19] mm/hugetlb_vmemmap: Fix __hugetlb_vmemmap_optimize_folios() Muchun Song
2026-06-02 10:10 ` [PATCH v3 03/19] powerpc/mm: Fix wrong addr_pfn tracking in compound vmemmap population Muchun Song
2026-06-03 14:36 ` Ritesh Harjani
2026-06-02 10:10 ` [PATCH v3 04/19] mm/hugetlb: Initialize gigantic bootmem hugepage struct pages earlier Muchun Song
2026-06-02 10:10 ` [PATCH v3 05/19] mm/mm_init: Simplify deferred_free_pages() migratetype init Muchun Song
2026-06-02 10:10 ` [PATCH v3 06/19] mm/sparse: Panic on memmap and usemap allocation failure Muchun Song
2026-06-02 10:10 ` [PATCH v3 07/19] mm/sparse: Move subsection_map_init() into sparse_init() Muchun Song
2026-06-02 10:10 ` [PATCH v3 08/19] mm/mm_init: Defer sparse_init() until after zone initialization Muchun Song
2026-06-02 10:10 ` [PATCH v3 09/19] mm/mm_init: Defer hugetlb reservation " Muchun Song
2026-06-02 10:10 ` [PATCH v3 10/19] mm/mm_init: Remove set_pageblock_order() call from sparse_init() Muchun Song
2026-06-02 10:10 ` [PATCH v3 11/19] mm/sparse: Move sparse_vmemmap_init_nid_late() into sparse_init_nid() Muchun Song
2026-06-02 10:10 ` [PATCH v3 12/19] mm/hugetlb_cma: Validate hugetlb CMA range by zone at reserve time Muchun Song
2026-06-02 10:10 ` [PATCH v3 13/19] mm/hugetlb: Refactor early boot gigantic hugepage allocation Muchun Song
2026-06-02 10:10 ` [PATCH v3 14/19] mm/hugetlb: Free cross-zone bootmem gigantic pages after allocation Muchun Song
2026-06-02 15:41 ` Mike Rapoport
2026-06-03 2:53 ` Muchun Song
2026-06-02 10:10 ` [PATCH v3 15/19] mm/hugetlb_vmemmap: Move bootmem HVO setup to early init Muchun Song
2026-06-02 15:41 ` Mike Rapoport
2026-06-03 2:42 ` Muchun Song
2026-06-03 12:02 ` Usama Arif
2026-06-03 12:24 ` Muchun Song
2026-06-03 12:35 ` Usama Arif [this message]
2026-06-02 10:10 ` [PATCH v3 16/19] mm/hugetlb: Remove obsolete bootmem cross-zone checks Muchun Song
2026-06-02 15:41 ` Mike Rapoport
2026-06-02 10:10 ` [PATCH v3 17/19] mm/sparse-vmemmap: Remove sparse_vmemmap_init_nid_late() Muchun Song
2026-06-02 15:41 ` Mike Rapoport
2026-06-02 10:10 ` [PATCH v3 18/19] mm/hugetlb: Remove unused bootmem cma field Muchun Song
2026-06-02 15:41 ` Mike Rapoport
2026-06-03 2:41 ` Muchun Song
2026-06-02 10:10 ` [PATCH v3 19/19] mm/mm_init: Fold __init_page_from_nid() into __init_deferred_page() Muchun Song
2026-06-02 14:46 ` Mike Rapoport
2026-06-02 15:41 ` Mike Rapoport
2026-06-03 2:39 ` Muchun Song
2026-06-02 10:34 ` [PATCH v3 00/19] mm: Refactor bootmem gigantic hugepage allocation Oscar Salvador (SUSE)
2026-06-02 12:01 ` Muchun Song
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