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Message-Id: <20240611123611.36d0633c65ec8171152fe803@linux-foundation.org>
Date: Tue, 11 Jun 2024 12:36:11 -0700
From: Andrew Morton <akpm@...ux-foundation.org>
To: David Hildenbrand <david@...hat.com>
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org,
 linux-hyperv@...r.kernel.org, virtualization@...ts.linux.dev,
 xen-devel@...ts.xenproject.org, kasan-dev@...glegroups.com, Mike Rapoport
 <rppt@...nel.org>, Oscar Salvador <osalvador@...e.de>, "K. Y. Srinivasan"
 <kys@...rosoft.com>, Haiyang Zhang <haiyangz@...rosoft.com>, Wei Liu
 <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>,
 "Michael S. Tsirkin" <mst@...hat.com>, Jason Wang <jasowang@...hat.com>,
 Xuan Zhuo <xuanzhuo@...ux.alibaba.com>, Eugenio PĂ©rez
 <eperezma@...hat.com>, Juergen Gross <jgross@...e.com>, Stefano Stabellini
 <sstabellini@...nel.org>, Oleksandr Tyshchenko
 <oleksandr_tyshchenko@...m.com>, Alexander Potapenko <glider@...gle.com>,
 Marco Elver <elver@...gle.com>, Dmitry Vyukov <dvyukov@...gle.com>
Subject: Re: [PATCH v1 2/3] mm/memory_hotplug: initialize memmap of
 !ZONE_DEVICE with PageOffline() instead of PageReserved()

On Tue, 11 Jun 2024 11:42:56 +0200 David Hildenbrand <david@...hat.com> wrote:

> > We'll leave the ZONE_DEVICE case alone for now.
> > 
> 
> @Andrew, can we add here:
> 
> "Note that self-hosted vmemmap pages will no longer be marked as 
> reserved. This matches ordinary vmemmap pages allocated from the buddy 
> during memory hotplug. Now, really only vmemmap pages allocated from 
> memblock during early boot will be marked reserved. Existing 
> PageReserved() checks seem to be handling all relevant cases correctly 
> even after this change."

Done, thanks.

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