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[149.14.88.26]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4589952a60fsm19204465e9.23.2025.07.30.04.30.13 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 30 Jul 2025 04:30:14 -0700 (PDT) Message-ID: Date: Wed, 30 Jul 2025 13:30:13 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [v2 00/11] THP support for zone device page migration To: Balbir Singh , linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, Karol Herbst , Lyude Paul , Danilo Krummrich , David Airlie , Simona Vetter , =?UTF-8?B?SsOpcsO0bWUgR2xpc3Nl?= , Shuah Khan , Barry Song , Baolin Wang , Ryan Roberts , Matthew Wilcox , Peter Xu , Zi Yan , Kefeng Wang , Jane Chu , Alistair Popple , Donet Tom , Ralph Campbell , =?UTF-8?Q?Mika_Penttil=C3=A4?= , Matthew Brost , Francois Dugast References: <20250730092139.3890844-1-balbirs@nvidia.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/g1oFAmgsLPQFCRvGjuMACgkQTd4Q 9wD/g1o0bxAAqYC7gTyGj5rZwvy1VesF6YoQncH0yI79lvXUYOX+Nngko4v4dTlOQvrd/vhb 02e9FtpA1CxgwdgIPFKIuXvdSyXAp0xXuIuRPQYbgNriQFkaBlHe9mSf8O09J3SCVa/5ezKM OLW/OONSV/Fr2VI1wxAYj3/Rb+U6rpzqIQ3Uh/5Rjmla6pTl7Z9/o1zKlVOX1SxVGSrlXhqt kwdbjdj/csSzoAbUF/duDuhyEl11/xStm/lBMzVuf3ZhV5SSgLAflLBo4l6mR5RolpPv5wad GpYS/hm7HsmEA0PBAPNb5DvZQ7vNaX23FlgylSXyv72UVsObHsu6pT4sfoxvJ5nJxvzGi69U s1uryvlAfS6E+D5ULrV35taTwSpcBAh0/RqRbV0mTc57vvAoXofBDcs3Z30IReFS34QSpjvl Hxbe7itHGuuhEVM1qmq2U72ezOQ7MzADbwCtn+yGeISQqeFn9QMAZVAkXsc9Wp0SW/WQKb76 FkSRalBZcc2vXM0VqhFVzTb6iNqYXqVKyuPKwhBunhTt6XnIfhpRgqveCPNIasSX05VQR6/a OBHZX3seTikp7A1z9iZIsdtJxB88dGkpeMj6qJ5RLzUsPUVPodEcz1B5aTEbYK6428H8MeLq NFPwmknOlDzQNC6RND8Ez7YEhzqvw7263MojcmmPcLelYbfOwU0EVcufkQEQAOfX3n0g0fZz 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+DWgUCaCwtJQUJG8aPFAAKCRBN3hD3AP+DWlDnD/4k2TW+HyOOOePVm23F5HOhNNd7nNv3 Vq2cLcW1DteHUdxMO0X+zqrKDHI5hgnE/E2QH9jyV8mB8l/ndElobciaJcbl1cM43vVzPIWn 01vW62oxUNtEvzLLxGLPTrnMxWdZgxr7ACCWKUnMGE2E8eca0cT2pnIJoQRz242xqe/nYxBB /BAK+dsxHIfcQzl88G83oaO7vb7s/cWMYRKOg+WIgp0MJ8DO2IU5JmUtyJB+V3YzzM4cMic3 bNn8nHjTWw/9+QQ5vg3TXHZ5XMu9mtfw2La3bHJ6AybL0DvEkdGxk6YHqJVEukciLMWDWqQQ RtbBhqcprgUxipNvdn9KwNpGciM+hNtM9kf9gt0fjv79l/FiSw6KbCPX9b636GzgNy0Ev2UV m00EtcpRXXMlEpbP4V947ufWVK2Mz7RFUfU4+ETDd1scMQDHzrXItryHLZWhopPI4Z+ps0rB CQHfSpl+wG4XbJJu1D8/Ww3FsO42TMFrNr2/cmqwuUZ0a0uxrpkNYrsGjkEu7a+9MheyTzcm vyU2knz5/stkTN2LKz5REqOe24oRnypjpAfaoxRYXs+F8wml519InWlwCra49IUSxD1hXPxO WBe5lqcozu9LpNDH/brVSzHCSb7vjNGvvSVESDuoiHK8gNlf0v+epy5WYd7CGAgODPvDShGN g3eXuA== Organization: Red Hat In-Reply-To: <20250730092139.3890844-1-balbirs@nvidia.com> X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: MyMKCFjUlYZ79_6i82aQGbyDD4CJ4S2dZAN8ssZSyfU_1753875015 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: AE24D80009 X-Stat-Signature: pqeatwx9u31jeojqmje1k3hs7x11itb5 X-Rspam-User: X-HE-Tag: 1753875018-136961 X-HE-Meta: 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 xv7ptF+I d1edqJmthkAzDiXnqt6aZSOKyiZk6UXwvxqXA07lgVJsmpw3x26GHUXDQSojJuV46lRs4zJZANHEtCJtkV0xGvyG/gZXSlEtpJu7UEqa4Vl0+1nnzsUMBmIyRvBJvSQBkK/3lWDHb0GKZDbWIGRxave4DK176qqrtTarhzY6Rx1ZBsgp1DoOXI+lOEdqTPpmKdnNhceJLzx6B7WvBjuP/UO/wHdb9Mst+hZUhm03S0pKbJMNFi+m5nPS0FVCzmXFsSirGwaE5OXF4kjjBa6l+2wAFX3I7e/1r3kuhEDFyIx8dLcO/qOy8JvpKLC7r9t2WQ4oYGVvqFn85KYoPuT7qU0OMnX68VjuRd3uC6sO9kw3yKm/hD9SpDAElD/2MkTa+tHGjzCDFHUckrsUK5icCeWlrO2b8eo/joH6KfgYl+Ns5qi8= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, 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 30.07.25 11:21, Balbir Singh wrote: BTW, I keep getting confused by the topic. Isn't this essentially "mm: support device-private THP" and the support for migration is just a necessary requirement to *enable* device private? -- Cheers, David / dhildenb