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[2003:cb:c735:9400:f91f:1f24:e403:81fe]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-38a1c84705esm38104596f8f.44.2025.01.02.03.35.48 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 02 Jan 2025 03:35:50 -0800 (PST) Message-ID: <3a2d03dd-ee70-43b4-8b05-1be948bd0997@redhat.com> Date: Thu, 2 Jan 2025 12:35:48 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3] mm: add build-time option for hotplug memory default online type To: Gregory Price Cc: linux-mm@kvack.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, kernel-team@meta.com, corbet@lwn.net, osalvador@suse.de, akpm@linux-foundation.org, chenhuacai@kernel.org, kernel@xen0n.name, gregkh@linuxfoundation.org, rafael@kernel.org References: <20241220210709.300066-1-gourry@gourry.net> <5e958aaa-b1ac-4512-a592-0e1612032861@redhat.com> From: David Hildenbrand Autocrypt: addr=david@redhat.com; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzSREYXZpZCBIaWxk ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwZgEEwEIAEICGwMGCwkIBwMCBhUIAgkKCwQW AgMBAh4BAheAAhkBFiEEG9nKrXNcTDpGDfzKTd4Q9wD/g1oFAl8Ox4kFCRKpKXgACgkQTd4Q 9wD/g1oHcA//a6Tj7SBNjFNM1iNhWUo1lxAja0lpSodSnB2g4FCZ4R61SBR4l/psBL73xktp rDHrx4aSpwkRP6Epu6mLvhlfjmkRG4OynJ5HG1gfv7RJJfnUdUM1z5kdS8JBrOhMJS2c/gPf wv1TGRq2XdMPnfY2o0CxRqpcLkx4vBODvJGl2mQyJF/gPepdDfcT8/PY9BJ7FL6Hrq1gnAo4 3Iv9qV0JiT2wmZciNyYQhmA1V6dyTRiQ4YAc31zOo2IM+xisPzeSHgw3ONY/XhYvfZ9r7W1l pNQdc2G+o4Di9NPFHQQhDw3YTRR1opJaTlRDzxYxzU6ZnUUBghxt9cwUWTpfCktkMZiPSDGd KgQBjnweV2jw9UOTxjb4LXqDjmSNkjDdQUOU69jGMUXgihvo4zhYcMX8F5gWdRtMR7DzW/YE BgVcyxNkMIXoY1aYj6npHYiNQesQlqjU6azjbH70/SXKM5tNRplgW8TNprMDuntdvV9wNkFs 9TyM02V5aWxFfI42+aivc4KEw69SE9KXwC7FSf5wXzuTot97N9Phj/Z3+jx443jo2NR34XgF 89cct7wJMjOF7bBefo0fPPZQuIma0Zym71cP61OP/i11ahNye6HGKfxGCOcs5wW9kRQEk8P9 M/k2wt3mt/fCQnuP/mWutNPt95w9wSsUyATLmtNrwccz63XOwU0EVcufkQEQAOfX3n0g0fZz Bgm/S2zF/kxQKCEKP8ID+Vz8sy2GpDvveBq4H2Y34XWsT1zLJdvqPI4af4ZSMxuerWjXbVWb T6d4odQIG0fKx4F8NccDqbgHeZRNajXeeJ3R7gAzvWvQNLz4piHrO/B4tf8svmRBL0ZB5P5A 2uhdwLU3NZuK22zpNn4is87BPWF8HhY0L5fafgDMOqnf4guJVJPYNPhUFzXUbPqOKOkL8ojk CXxkOFHAbjstSK5Ca3fKquY3rdX3DNo+EL7FvAiw1mUtS+5GeYE+RMnDCsVFm/C7kY8c2d0G NWkB9pJM5+mnIoFNxy7YBcldYATVeOHoY4LyaUWNnAvFYWp08dHWfZo9WCiJMuTfgtH9tc75 7QanMVdPt6fDK8UUXIBLQ2TWr/sQKE9xtFuEmoQGlE1l6bGaDnnMLcYu+Asp3kDT0w4zYGsx 5r6XQVRH4+5N6eHZiaeYtFOujp5n+pjBaQK7wUUjDilPQ5QMzIuCL4YjVoylWiBNknvQWBXS lQCWmavOT9sttGQXdPCC5ynI+1ymZC1ORZKANLnRAb0NH/UCzcsstw2TAkFnMEbo9Zu9w7Kv AxBQXWeXhJI9XQssfrf4Gusdqx8nPEpfOqCtbbwJMATbHyqLt7/oz/5deGuwxgb65pWIzufa N7eop7uh+6bezi+rugUI+w6DABEBAAHCwXwEGAEIACYCGwwWIQQb2cqtc1xMOkYN/MpN3hD3 AP+DWgUCXw7HsgUJEqkpoQAKCRBN3hD3AP+DWrrpD/4qS3dyVRxDcDHIlmguXjC1Q5tZTwNB boaBTPHSy/Nksu0eY7x6HfQJ3xajVH32Ms6t1trDQmPx2iP5+7iDsb7OKAb5eOS8h+BEBDeq 3ecsQDv0fFJOA9ag5O3LLNk+3x3q7e0uo06XMaY7UHS341ozXUUI7wC7iKfoUTv03iO9El5f XpNMx/YrIMduZ2+nd9Di7o5+KIwlb2mAB9sTNHdMrXesX8eBL6T9b+MZJk+mZuPxKNVfEQMQ a5SxUEADIPQTPNvBewdeI80yeOCrN+Zzwy/Mrx9EPeu59Y5vSJOx/z6OUImD/GhX7Xvkt3kq Er5KTrJz3++B6SH9pum9PuoE/k+nntJkNMmQpR4MCBaV/J9gIOPGodDKnjdng+mXliF3Ptu6 3oxc2RCyGzTlxyMwuc2U5Q7KtUNTdDe8T0uE+9b8BLMVQDDfJjqY0VVqSUwImzTDLX9S4g/8 kC4HRcclk8hpyhY2jKGluZO0awwTIMgVEzmTyBphDg/Gx7dZU1Xf8HFuE+UZ5UDHDTnwgv7E th6RC9+WrhDNspZ9fJjKWRbveQgUFCpe1sa77LAw+XFrKmBHXp9ZVIe90RMe2tRL06BGiRZr jPrnvUsUUsjRoRNJjKKA/REq+sAnhkNPPZ/NNMjaZ5b8Tovi8C0tmxiCHaQYqj7G2rgnT0kt WNyWQQ== Organization: Red Hat In-Reply-To: X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: s2mDV6zgZr0rU_biVxrA7SWQ4z453_j9X33UcEj5Le0_1735817752 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 759931C0019 X-Rspam-User: X-Rspamd-Server: rspam07 X-Stat-Signature: 78j5cdhkmfp41ph913m5o6kss7qbyuux X-HE-Tag: 1735817658-77747 X-HE-Meta: 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 EtyA/ryb AzDv9wrgH9bS4r6dz+vl7UWHHSyCOxZyVbE8IHmR2lr5cYOUqWC3sion6pbw4HptPIvlulUi+payPlongJrQkYfkNHJn/pWH7CWPoDm00WJ9JMyPP5FFlXkfnuqArvAsDtF0N3TrRTcwC7E3/o5EmV+ONpNpWQ2aya7s1bhgb/uesl0z35iv/K03/3ybJGfgyOoFDWp4FCmxGvNgHyHj0GTS/je7IyS6ornW/jBmJs/aoO/a8NpaFUVvOjrRjeIe4iZ0QPcigD7lxXFzrMuTr8hwnJr8TeR75sHm5OGPNVZj7pJrEhxn3NqVSKhrIwW9dkCdaAwr+3qbNnXiEmJMxesMJHuMmbq/jiGCj43JGeDDsSoYsWXiyJTJcxcUPK7PehZvmKZbjWTvTySA= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000113, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 22.12.24 06:03, Gregory Price wrote: > On Sat, Dec 21, 2024 at 04:30:21PM +0100, David Hildenbrand wrote: >> >>> -config MEMORY_HOTPLUG_DEFAULT_ONLINE >>> - bool "Online the newly added memory blocks by default" >>> - depends on MEMORY_HOTPLUG >>> +choice >>> + prompt "Memory Hotplug Default Online Type" >>> + default MHP_DEFAULT_ONLINE_TYPE_OFFLINE >>> help >>> + Default memory type for driver managed hotplug memory. >> >> We should call it "hotplugged memory" consistently, which it is from a pure >> core-mm perspective ("add memory"). >> >> "Driver managed" reminds too much about add_memory_driver_managed(), which >> is only one case. Maybe just drop the "e.g., page tables" from the examples >> below. >> > > I suppose it's accurate that this also affects VM-hotplugged memory, > which may not necessarily be "driver managed" in that regard. So it's > more accurate to just say "hotplugged memory" - although even that's not > quite completely accurate according to the definition in the docs. > > Either way, will change it to "hotplugged memory". The "really correct" thing might be "hot-added memory blocks", because that's what it is from a Linux MM POV. Not sure though, if that will be particularly easier to grasp for end users. -- Cheers, David / dhildenb