From: Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx>
On Mon, 21 Oct 2024 13:11:51 +0800, Hua Su wrote:
> Currently when CONFIG_DEFERRED_STRUCT_PAGE_INIT is not set, the reserved
> pages are initialized to MIGRATE_MOVABLE by default in memmap_init.
>
> Reserved memory mainly store the metadata of struct page. When
> HUGETLB_PAGE_OPTIMIZE_VMEMMAP_DEFAULT_ON=Y and hugepages are allocated,
> the HVO will remap the vmemmap virtual address range to the page which
> vmemmap_reuse is mapped to. The pages previously mapping the range will
> be freed to the buddy system.
>
> [...]
Applied to for-next branch of memblock.git tree, thanks!
[1/1] memblock: uniformly initialize all reserved pages to MIGRATE_MOVABLE
commit: ad48825232a91a382f665bb7c3bf0044027791d4
tree: https://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock
branch: for-next
--
Sincerely yours,
Mike.
