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Date: Wed, 18 Mar 2026 12:51:48 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: "David Hildenbrand (Arm)" <david@kernel.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
 linux-cxl@vger.kernel.org, Oscar Salvador <osalvador@suse.de>, Axel
 Rasmussen <axelrasmussen@google.com>, Yuanchu Xie <yuanchu@google.com>, Wei
 Xu <weixugc@google.com>, Lorenzo Stoakes <ljs@kernel.org>,
 "Liam R. Howlett" <Liam.Howlett@oracle.com>, Vlastimil Babka
 <vbabka@kernel.org>, Mike Rapoport <rppt@kernel.org>, Suren Baghdasaryan
 <surenb@google.com>, Michal Hocko <mhocko@suse.com>
Subject: Re: [PATCH 00/14] mm: memory hot(un)plug and SPARSEMEM cleanups
Message-Id: <20260318125148.b137df94f3c3398cf453e6c1@linux-foundation.org>
In-Reply-To: <20260317165652.99114-1-david@kernel.org>
References: <20260317165652.99114-1-david@kernel.org>
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On Tue, 17 Mar 2026 17:56:38 +0100 "David Hildenbrand (Arm)" <david@kernel.org> wrote:

> Some cleanups around memory hot(un)plug and SPARSEMEM. In essence,
> we can limit CONFIG_MEMORY_HOTPLUG to CONFIG_SPARSEMEM_VMEMMAP,
> remove some dead code, and move all the hotplug bits over to
> mm/sparse-vmemmap.c.
> 
> Some further/related cleanups around other unnecessary code
> (memory hole handling and complicated usemap allocation).
> 
> I have some further sparse.c cleanups lying around, and I'm planning
> on getting rid of bootmem_info.c entirely.

Added to mm-new, thanks.

Sashiko said a few things, as I expect you've seen:
https://sashiko.dev/#/patchset/20260317165652.99114-1-david%40kernel.org