Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Message-ID: <c3c6e8bf-e8cd-7e33-5193-c1f78b8bbef4@redhat.com>
Date:   Wed, 21 Jun 2023 10:24:45 +0200
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101
 Thunderbird/102.12.0
Subject: Re: [PATCH] mm/memory_hotplug.c: don't fail hot unplug quite so
 eagerly
Content-Language: en-US
From:   David Hildenbrand <david@redhat.com>
To:     John Hubbard <jhubbard@nvidia.com>,
        Oscar Salvador <osalvador@suse.de>
Cc:     Andrew Morton <akpm@linux-foundation.org>,
        LKML <linux-kernel@vger.kernel.org>, linux-mm@kvack.org
References: <20230620011719.155379-1-jhubbard@nvidia.com>
 <ed83df65-f785-7077-ddd0-4e53d6fa6056@redhat.com>
 <80e01fa9-28c0-37e8-57f8-5bb4ce9a9db7@nvidia.com>
 <83689f25-ca50-7ece-45f0-a936e704df7d@redhat.com>
Organization: Red Hat
In-Reply-To: <83689f25-ca50-7ece-45f0-a936e704df7d@redhat.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Precedence: bulk

[...]

> 
> There is still arch/powerpc/platforms/pseries/hotplug-memory.c that calls
> device_offline() and would fail on signals (not sure if relevant, like for virtio-mem it
> shouldn't be that relevant).

Oh, and of course the ACPI-triggered device_offline().

-- 
Cheers,

David / dhildenb