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Re: [PATCH v1 0/9] mm: vm_normal_page*() improvements
- To: David Hildenbrand <david@xxxxxxxxxx>
- From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
- Date: Tue, 15 Jul 2025 16:31:26 -0700
- Cc: linux-kernel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, nvdimm@xxxxxxxxxxxxxxx, Juergen Gross <jgross@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>, Dan Williams <dan.j.williams@xxxxxxxxx>, Matthew Wilcox <willy@xxxxxxxxxxxxx>, Jan Kara <jack@xxxxxxx>, Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>, Christian Brauner <brauner@xxxxxxxxxx>, Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>, "Liam R. Howlett" <Liam.Howlett@xxxxxxxxxx>, Vlastimil Babka <vbabka@xxxxxxx>, Mike Rapoport <rppt@xxxxxxxxxx>, Suren Baghdasaryan <surenb@xxxxxxxxxx>, Michal Hocko <mhocko@xxxxxxxx>, Zi Yan <ziy@xxxxxxxxxx>, Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>, Nico Pache <npache@xxxxxxxxxx>, Ryan Roberts <ryan.roberts@xxxxxxx>, Dev Jain <dev.jain@xxxxxxx>, Barry Song <baohua@xxxxxxxxxx>, Jann Horn <jannh@xxxxxxxxxx>, Pedro Falcato <pfalcato@xxxxxxx>, Hugh Dickins <hughd@xxxxxxxxxx>, Oscar Salvador <osalvador@xxxxxxx>, Lance Yang <lance.yang@xxxxxxxxx>
- Delivery-date: Tue, 15 Jul 2025 23:31:48 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Tue, 15 Jul 2025 15:23:41 +0200 David Hildenbrand <david@xxxxxxxxxx> wrote:
> Based on mm/mm-new. I dropped the CoW PFNMAP changes for now, still
> working on a better way to sort all that out cleanly.
>
> Cleanup and unify vm_normal_page_*() handling, also marking the
> huge zerofolio as special in the PMD. Add+use vm_normal_page_pud() and
> cleanup that XEN vm_ops->find_special_page thingy.
>
> There are plans of using vm_normal_page_*() more widely soon.
>
> Briefly tested on UML (making sure vm_normal_page() still works as expected
> without pte_special() support) and on x86-64 with a bunch of tests.
When I was but a wee little bairn, my mother would always tell me
"never merge briefly tested patches when you're at -rc6". But three
weeks in -next should shake things out.
However the series rejects due to the is_huge_zero_pmd ->
is_huge_zero_pfn changes in Luiz's "mm: introduce snapshot_page() v3"
series, so could we please have a redo against present mm-new?
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