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[2003:cb:c718:6400:7621:b88a:e99e:2fa8]) by smtp.gmail.com with ESMTPSA id k21-20020a05600c1c9500b004182a36b185sm13074649wms.2.2024.04.16.08.02.16 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 16 Apr 2024 08:02:17 -0700 (PDT) Message-ID: <0e692fb6-023d-4d24-bdaa-99dec7569ce4@redhat.com> Date: Tue, 16 Apr 2024 17:02:16 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v7 2/3] mm/arm64: override clear_young_dirty_ptes() batch helper To: Lance Yang , akpm@linux-foundation.org Cc: ryan.roberts@arm.com, 21cnbao@gmail.com, mhocko@suse.com, fengwei.yin@intel.com, zokeefe@google.com, shy828301@gmail.com, xiehuan09@gmail.com, wangkefeng.wang@huawei.com, songmuchun@bytedance.com, peterx@redhat.com, minchan@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <20240416033457.32154-1-ioworker0@gmail.com> <20240416033457.32154-3-ioworker0@gmail.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: <20240416033457.32154-3-ioworker0@gmail.com> X-Mimecast-Spam-Score: 0 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: rspam04 X-Rspamd-Queue-Id: 2F968180030 X-Rspam-User: X-Stat-Signature: 5t68c6qf465a7xt167up5qx1ifws3fc3 X-HE-Tag: 1713279741-553554 X-HE-Meta: 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 0fgMbUeC 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000001, 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 16.04.24 05:34, Lance Yang wrote: > The per-pte get_and_clear/modify/set approach would result in > unfolding/refolding for contpte mappings on arm64. So we need > to override clear_young_dirty_ptes() for arm64 to avoid it. > > Suggested-by: David Hildenbrand I could have sworn my suggestion would have better applied to patch #1 :) -- Cheers, David / dhildenb