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(p200300cbc70a7b0054a7eb9663bcccf4.dip0.t-ipconnect.de. [2003:cb:c70a:7b00:54a7:eb96:63bc:ccf4]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-39c30226ee4sm2023973f8f.93.2025.04.03.07.47.47 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 03 Apr 2025 07:47:48 -0700 (PDT) Message-ID: <02a4ae57-ae97-42b7-86ba-78963bafed43@redhat.com> Date: Thu, 3 Apr 2025 16:47:47 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3] x86/mm/pat: Fix VM_PAT handling when fork() fails in copy_page_range() To: Lorenzo Stoakes Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org, xingwei lee , yuxin wang , Marius Fleischer , Ingo Molnar , Borislav Petkov , Dan Carpenter , Andrew Morton , Linus Torvalds , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Rik van Riel , "H. Peter Anvin" , Peter Xu References: <20250325191951.471185-1-david@redhat.com> <7b6f57b5-c99f-4be7-b89c-1db06788d2b5@redhat.com> <18b18a90-9850-4015-8038-35e2e083ece5@lucifer.local> 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: <18b18a90-9850-4015-8038-35e2e083ece5@lucifer.local> X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: -TsNDLnRJQ-ULD6AiBb384MvuyoXeH5JRhKjhG2235s_1743691669 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: rspam11 X-Rspamd-Queue-Id: 7FAEC8000E X-Stat-Signature: jpypnmaai3hcmdqrins67u915sos3kqu X-Rspam-User: X-HE-Tag: 1743691673-991693 X-HE-Meta: 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 N6rWnzJp 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 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 02.04.25 14:32, Lorenzo Stoakes wrote: > For the whole thing with this fix-patch: > > Reviewed-by: Lorenzo Stoakes > So, we already have now commit dc84bc2aba85a1508f04a936f9f9a15f64ebfb31 Author: David Hildenbrand Date: Fri Mar 21 12:23:23 2025 +0100 x86/mm/pat: Fix VM_PAT handling when fork() fails in copy_page_range() So I'll only send a fixup (but will likely keep rc vs. ret unchanged for that). -- Cheers, David / dhildenb