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Mon, 30 Oct 2023 10:30:55 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHWh1xQ5I0MM3/Iy74fEIwMqL5ViQAp87aWrH8OcVXHaW0K+XK2JilNTh4OuPe9Hz3C4viW2A== X-Received: by 2002:a2e:b808:0:b0:2c5:27ca:478b with SMTP id u8-20020a2eb808000000b002c527ca478bmr8146970ljo.7.1698687055317; Mon, 30 Oct 2023 10:30:55 -0700 (PDT) Received: from [192.168.1.174] ([151.81.68.207]) by smtp.googlemail.com with ESMTPSA id c5-20020a05600c0a4500b004094d4292aesm449246wmq.18.2023.10.30.10.30.52 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 30 Oct 2023 10:30:54 -0700 (PDT) Message-ID: <50cf2a74-5702-4b7a-8bbc-7f9b5d56b4d1@redhat.com> Date: Mon, 30 Oct 2023 18:30:51 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v13 15/35] fs: Export anon_inode_getfile_secure() for use by KVM To: Sean Christopherson , Marc Zyngier , Oliver Upton , Huacai Chen , Michael Ellerman , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexander Viro , Christian Brauner , "Matthew Wilcox (Oracle)" , Andrew Morton Cc: kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Xiaoyao Li , Xu Yilun , Chao Peng , Fuad Tabba , Jarkko Sakkinen , Anish Moorthy , David Matlack , Yu Zhang , Isaku Yamahata , =?UTF-8?B?TWlja2HDq2wgU2FsYcO8?= =?UTF-8?Q?n?= , Vlastimil Babka , Vishal Annapurve , Ackerley Tng , Maciej Szmigiero , David Hildenbrand , Quentin Perret , Michael Roth , Wang , Liam Merwick , Isaku Yamahata , "Kirill A . Shutemov" References: <20231027182217.3615211-1-seanjc@google.com> <20231027182217.3615211-16-seanjc@google.com> From: Paolo Bonzini Autocrypt: addr=pbonzini@redhat.com; keydata= xsEhBFRCcBIBDqDGsz4K0zZun3jh+U6Z9wNGLKQ0kSFyjN38gMqU1SfP+TUNQepFHb/Gc0E2 CxXPkIBTvYY+ZPkoTh5xF9oS1jqI8iRLzouzF8yXs3QjQIZ2SfuCxSVwlV65jotcjD2FTN04 hVopm9llFijNZpVIOGUTqzM4U55sdsCcZUluWM6x4HSOdw5F5Utxfp1wOjD/v92Lrax0hjiX DResHSt48q+8FrZzY+AUbkUS+Jm34qjswdrgsC5uxeVcLkBgWLmov2kMaMROT0YmFY6A3m1S P/kXmHDXxhe23gKb3dgwxUTpENDBGcfEzrzilWueOeUWiOcWuFOed/C3SyijBx3Av/lbCsHU Vx6pMycNTdzU1BuAroB+Y3mNEuW56Yd44jlInzG2UOwt9XjjdKkJZ1g0P9dwptwLEgTEd3Fo UdhAQyRXGYO8oROiuh+RZ1lXp6AQ4ZjoyH8WLfTLf5g1EKCTc4C1sy1vQSdzIRu3rBIjAvnC tGZADei1IExLqB3uzXKzZ1BZ+Z8hnt2og9hb7H0y8diYfEk2w3R7wEr+Ehk5NQsT2MPI2QBd wEv1/Aj1DgUHZAHzG1QN9S8wNWQ6K9DqHZTBnI1hUlkp22zCSHK/6FwUCuYp1zcAEQEAAc0j UGFvbG8gQm9uemluaSA8cGJvbnppbmlAcmVkaGF0LmNvbT7CwU0EEwECACMFAlRCcBICGwMH CwkIBwMCAQYVCAIJCgsEFgIDAQIeAQIXgAAKCRB+FRAMzTZpsbceDp9IIN6BIA0Ol7MoB15E 11kRz/ewzryFY54tQlMnd4xxfH8MTQ/mm9I482YoSwPMdcWFAKnUX6Yo30tbLiNB8hzaHeRj jx12K+ptqYbg+cevgOtbLAlL9kNgLLcsGqC2829jBCUTVeMSZDrzS97ole/YEez2qFpPnTV0 VrRWClWVfYh+JfzpXmgyhbkuwUxNFk421s4Ajp3d8nPPFUGgBG5HOxzkAm7xb1cjAuJ+oi/K CHfkuN+fLZl/u3E/fw7vvOESApLU5o0icVXeakfSz0LsygEnekDbxPnE5af/9FEkXJD5EoYG SEahaEtgNrR4qsyxyAGYgZlS70vkSSYJ+iT2rrwEiDlo31MzRo6Ba2FfHBSJ7lcYdPT7bbk9 AO3hlNMhNdUhoQv7M5HsnqZ6unvSHOKmReNaS9egAGdRN0/GPDWr9wroyJ65ZNQsHl9nXBqE AukZNr5oJO5vxrYiAuuTSd6UI/xFkjtkzltG3mw5ao2bBpk/V/YuePrJsnPFHG7NhizrxttB nTuOSCMo45pfHQ+XYd5K1+Cv/NzZFNWscm5htJ0HznY+oOsZvHTyGz3v91pn51dkRYN0otqr bQ4tlFFuVjArBZcapSIe6NV8C4cEiSTOwE0EVEJx7gEIAMeHcVzuv2bp9HlWDp6+RkZe+vtl KwAHplb/WH59j2wyG8V6i33+6MlSSJMOFnYUCCL77bucx9uImI5nX24PIlqT+zasVEEVGSRF m8dgkcJDB7Tps0IkNrUi4yof3B3shR+vMY3i3Ip0e41zKx0CvlAhMOo6otaHmcxr35sWq1Jk tLkbn3wG+fPQCVudJJECvVQ//UAthSSEklA50QtD2sBkmQ14ZryEyTHQ+E42K3j2IUmOLriF dNr9NvE1QGmGyIcbw2NIVEBOK/GWxkS5+dmxM2iD4Jdaf2nSn3jlHjEXoPwpMs0KZsgdU0pP JQzMUMwmB1wM8JxovFlPYrhNT9MAEQEAAcLBMwQYAQIACQUCVEJx7gIbDAAKCRB+FRAMzTZp sadRDqCctLmYICZu4GSnie4lKXl+HqlLanpVMOoFNnWs9oRP47MbE2wv8OaYh5pNR9VVgyhD OG0AU7oidG36OeUlrFDTfnPYYSF/mPCxHttosyt8O5kabxnIPv2URuAxDByz+iVbL+RjKaGM GDph56ZTswlx75nZVtIukqzLAQ5fa8OALSGum0cFi4ptZUOhDNz1onz61klD6z3MODi0sBZN Aj6guB2L/+2ZwElZEeRBERRd/uommlYuToAXfNRdUwrwl9gRMiA0WSyTb190zneRRDfpSK5d usXnM/O+kr3Dm+Ui+UioPf6wgbn3T0o6I5BhVhs4h4hWmIW7iNhPjX1iybXfmb1gAFfjtHfL xRUr64svXpyfJMScIQtBAm0ihWPltXkyITA92ngCmPdHa6M1hMh4RDX+Jf1fiWubzp1voAg0 JBrdmNZSQDz0iKmSrx8xkoXYfA3bgtFN8WJH2xgFL28XnqY4M6dLhJwV3z08tPSRqYFm4NMP dRsn0/7oymhneL8RthIvjDDQ5ktUjMe8LtHr70OZE/TT88qvEdhiIVUogHdo4qBrk41+gGQh b906Dudw5YhTJFU3nC6bbF2nrLlB4C/XSiH76ZvqzV0Z/cAMBo5NF/w= In-Reply-To: <20231027182217.3615211-16-seanjc@google.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: rspam08 X-Rspamd-Queue-Id: C2B6640015 X-Stat-Signature: px876zpb9e3bu4pxdfophp6crub6cuti X-Rspam-User: X-HE-Tag: 1698687068-84164 X-HE-Meta: U2FsdGVkX19yIxYfGmIAot/zpv0OBwGgfKJO/Hoifm1uzYBxh0nChi6e15MRT/KFXCAgZOsk8rcStD6iWTSmixG5CS5+ynzyLM4hnyfky5+nwvhVTAijAGhfzeTNsEnSLZkeK7a6CzJtWS0Lj0WBSPDMOVq0eNJIqglYWuFZ8MRAdFlQvTmIPu8ZAZmSB6L1oPK1kn36HFJvYkFEmnHyEqlEEv1fqYEo6AFD9cJPdzUN2ZGPl9VDlWlTFa9K781CgbhM7eEMOoneVA5WO1MUW/8X4RTw0sQKgWfpU/OcaT/SL3wTkKoL3FzA2nnu5DoL8ibN87qhY9MHUkQJ0/A0WAsWNOpOlXpGRWfqv/Nf+5T5sIwkxu3jL2bj8WO6RhnUUqP2Cc1c96xWvObuttTBd9pibKYBqT5gPEZmP/0tG280Y2+KoTVACZZvWi0RtoBsAypP65WVy5WFwcLsTIrfjcBvt7SdEVsu5ptyzlwbGmgoFeUqM2doG68VsZKpo9ia6Lou7pKi7Imzjg+ewNtyJTq3oizNLMHKTGjqzjHQ9MRPs1T7UFFsuHXllkMHJLRHF/Vf/v4ds/WcfoLOgN8xoj1j6LzAO3NKhIKUonaMRiIqY9tVFVi6UZ2kL5XMzCXCQZ1j8e+/qAdS+a51F4OFKCBIeTzS30dsp1N6ZPnYQKfAz63Pbb9eoNSUGAUU325aXTAL5k8IFVJ1MyPMIKq0pEnk3aEpd3T9Vy7LJr9bGcSEycbjh5mcjSHTNyybQOQPDcI7vq17xPb2wmKKDUKFrCvzSYCMenUZUh17GKhIl66u77kNecNfLyv4sEm1kNHcfl4GK09HLX46EKdduoKJezHADNs5EJptdsLb9v+cvb5gV+6+l4lRSDw/vgkboeFlSfPB4/FAj6lLwQAV44K3kaiJNsR2SlCU6BWLBGulRgracz8cU9akrZdbbn0fUJoBgijIJzV8f9VI4P5zTiB aL5TPHJ6 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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 10/27/23 20:21, Sean Christopherson wrote: > Export anon_inode_getfile_secure() so that it can be used by KVM to > create and manage file-based guest memory without need a fullblow without introducing a full-blown Otherwise, Reviewed-by: Paolo Bonzini Paolo > filesystem. The "standard" anon_inode_getfd() doesn't work for KVM's use > case as KVM needs a unique inode for each file, e.g. to be able to > independently manage the size and lifecycle of a given file.