linux-kernel - Re: [PATCH] memblock: uniformly initialize all reserved pages to MIGRATE

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Message-ID: <172949345149.2327149.636551407707863142.b4-ty@kernel.org>
Date: Mon, 21 Oct 2024 09:52:42 +0300
From: Mike Rapoport <rppt@...nel.org>
To: akpm@...ux-foundation.org,
	Hua Su <suhua.tanke@...il.com>
Cc: Mike Rapoport <rppt@...nel.org>,
	Wei Yang <richard.weiyang@...il.com>,
	linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] memblock: uniformly initialize all reserved pages to MIGRATE_MOVABLE

From: Mike Rapoport (Microsoft) <rppt@...nel.org>

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.