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([2a01:e0a:280:24f0:9db0:474c:ff43:9f5c]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a6f3a79377sm1326959f8f.20.2025.06.26.00.12.50 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 26 Jun 2025 00:12:50 -0700 (PDT) Message-ID: <0398b04a-7fa6-498e-a674-619de2227b11@redhat.com> Date: Thu, 26 Jun 2025 09:12:50 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 00/19] vfio-user client To: John Levon , qemu-devel@nongnu.org Cc: =?UTF-8?Q?Marc-Andr=C3=A9_Lureau?= , =?UTF-8?Q?Daniel_P=2E_Berrang=C3=A9?= , Thanos Makatos , Paolo Bonzini , Alex Williamson , =?UTF-8?Q?Philippe_Mathieu-Daud=C3=A9?= References: <20250625193012.2316242-1-john.levon@nutanix.com> Content-Language: en-US, fr From: =?UTF-8?Q?C=C3=A9dric_Le_Goater?= Autocrypt: addr=clg@redhat.com; keydata= xsFNBFu8o3UBEADP+oJVJaWm5vzZa/iLgpBAuzxSmNYhURZH+guITvSySk30YWfLYGBWQgeo 8NzNXBY3cH7JX3/a0jzmhDc0U61qFxVgrPqs1PQOjp7yRSFuDAnjtRqNvWkvlnRWLFq4+U5t yzYe4SFMjFb6Oc0xkQmaK2flmiJNnnxPttYwKBPd98WfXMmjwAv7QfwW+OL3VlTPADgzkcqj 53bfZ4VblAQrq6Ctbtu7JuUGAxSIL3XqeQlAwwLTfFGrmpY7MroE7n9Rl+hy/kuIrb/TO8n0 ZxYXvvhT7OmRKvbYuc5Jze6o7op/bJHlufY+AquYQ4dPxjPPVUT/DLiUYJ3oVBWFYNbzfOrV RxEwNuRbycttMiZWxgflsQoHF06q/2l4ttS3zsV4TDZudMq0TbCH/uJFPFsbHUN91qwwaN/+ gy1j7o6aWMz+Ib3O9dK2M/j/O/Ube95mdCqN4N/uSnDlca3YDEWrV9jO1mUS/ndOkjxa34ia 70FjwiSQAsyIwqbRO3CGmiOJqDa9qNvd2TJgAaS2WCw/TlBALjVQ7AyoPEoBPj31K74Wc4GS Rm+FSch32ei61yFu6ACdZ12i5Edt+To+hkElzjt6db/UgRUeKfzlMB7PodK7o8NBD8outJGS tsL2GRX24QvvBuusJdMiLGpNz3uqyqwzC5w0Fd34E6G94806fwARAQABzSJDw6lkcmljIExl IEdvYXRlciA8Y2xnQHJlZGhhdC5jb20+wsGRBBMBCAA7FiEEoPZlSPBIlev+awtgUaNDx8/7 7KEFAmTLlVECGwMFCwkIBwICIgIGFQoJCAsCBBYCAwECHgcCF4AACgkQUaNDx8/77KG0eg// S0zIzTcxkrwJ/9XgdcvVTnXLVF9V4/tZPfB7sCp8rpDCEseU6O0TkOVFoGWM39sEMiQBSvyY lHrP7p7E/JYQNNLh441MfaX8RJ5Ul3btluLapm8oHp/vbHKV2IhLcpNCfAqaQKdfk8yazYhh EdxTBlzxPcu+78uE5fF4wusmtutK0JG0sAgq0mHFZX7qKG6LIbdLdaQalZ8CCFMKUhLptW71 xe+aNrn7hScBoOj2kTDRgf9CE7svmjGToJzUxgeh9mIkxAxTu7XU+8lmL28j2L5uNuDOq9vl hM30OT+pfHmyPLtLK8+GXfFDxjea5hZLF+2yolE/ATQFt9AmOmXC+YayrcO2ZvdnKExZS1o8 VUKpZgRnkwMUUReaF/mTauRQGLuS4lDcI4DrARPyLGNbvYlpmJWnGRWCDguQ/LBPpbG7djoy k3NlvoeA757c4DgCzggViqLm0Bae320qEc6z9o0X0ePqSU2f7vcuWN49Uhox5kM5L86DzjEQ RHXndoJkeL8LmHx8DM+kx4aZt0zVfCHwmKTkSTQoAQakLpLte7tWXIio9ZKhUGPv/eHxXEoS 0rOOAZ6np1U/xNR82QbF9qr9TrTVI3GtVe7Vxmff+qoSAxJiZQCo5kt0YlWwti2fFI4xvkOi V7lyhOA3+/3oRKpZYQ86Frlo61HU3r6d9wzOwU0EW7yjdQEQALyDNNMw/08/fsyWEWjfqVhW pOOrX2h+z4q0lOHkjxi/FRIRLfXeZjFfNQNLSoL8j1y2rQOs1j1g+NV3K5hrZYYcMs0xhmrZ KXAHjjDx7FW3sG3jcGjFW5Xk4olTrZwFsZVUcP8XZlArLmkAX3UyrrXEWPSBJCXxDIW1hzwp bV/nVbo/K9XBptT/wPd+RPiOTIIRptjypGY+S23HYBDND3mtfTz/uY0Jytaio9GETj+fFis6 TxFjjbZNUxKpwftu/4RimZ7qL+uM1rG1lLWc9SPtFxRQ8uLvLOUFB1AqHixBcx7LIXSKZEFU CSLB2AE4wXQkJbApye48qnZ09zc929df5gU6hjgqV9Gk1rIfHxvTsYltA1jWalySEScmr0iS YBZjw8Nbd7SxeomAxzBv2l1Fk8fPzR7M616dtb3Z3HLjyvwAwxtfGD7VnvINPbzyibbe9c6g LxYCr23c2Ry0UfFXh6UKD83d5ybqnXrEJ5n/t1+TLGCYGzF2erVYGkQrReJe8Mld3iGVldB7 JhuAU1+d88NS3aBpNF6TbGXqlXGF6Yua6n1cOY2Yb4lO/mDKgjXd3aviqlwVlodC8AwI0Sdu jWryzL5/AGEU2sIDQCHuv1QgzmKwhE58d475KdVX/3Vt5I9kTXpvEpfW18TjlFkdHGESM/Jx IqVsqvhAJkalABEBAAHCwV8EGAECAAkFAlu8o3UCGwwACgkQUaNDx8/77KEhwg//WqVopd5k 8hQb9VVdk6RQOCTfo6wHhEqgjbXQGlaxKHoXywEQBi8eULbeMQf5l4+tHJWBxswQ93IHBQjK yKyNr4FXseUI5O20XVNYDJZUrhA4yn0e/Af0IX25d94HXQ5sMTWr1qlSK6Zu79lbH3R57w9j hQm9emQEp785ui3A5U2Lqp6nWYWXz0eUZ0Tad2zC71Gg9VazU9MXyWn749s0nXbVLcLS0yop s302Gf3ZmtgfXTX/W+M25hiVRRKCH88yr6it+OMJBUndQVAA/fE9hYom6t/zqA248j0QAV/p LHH3hSirE1mv+7jpQnhMvatrwUpeXrOiEw1nHzWCqOJUZ4SY+HmGFW0YirWV2mYKoaGO2YBU wYF7O9TI3GEEgRMBIRT98fHa0NPwtlTktVISl73LpgVscdW8yg9Gc82oe8FzU1uHjU8b10lU XOMHpqDDEV9//r4ZhkKZ9C4O+YZcTFu+mvAY3GlqivBNkmYsHYSlFsbxc37E1HpTEaSWsGfA HQoPn9qrDJgsgcbBVc1gkUT6hnxShKPp4PlsZVMNjvPAnr5TEBgHkk54HQRhhwcYv1T2QumQ izDiU6iOrUzBThaMhZO3i927SG2DwWDVzZltKrCMD1aMPvb3NU8FOYRhNmIFR3fcalYr+9gD uVKe8BVz4atMOoktmt0GWTOC8P4= In-Reply-To: <20250625193012.2316242-1-john.levon@nutanix.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=170.10.129.124; envelope-from=clg@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 6/25/25 21:29, John Levon wrote: > The series contains an implementation of a vfio-user client in QEMU. > > The vfio-user protocol allows for implementing (PCI) devices in another > userspace process; SPDK is one example, which includes a virtual NVMe > implementation. > > The vfio-user framework consists of 3 parts: > 1) The VFIO user protocol specification. > 2) A client - the VFIO device in QEMU that encapsulates VFIO messages > and sends them to the server. > 3) A server - a remote process that emulates a device. > > This patchset implements parts 1 and 2. > > It has been tested against libvfio-user test servers as well as SPDK. > A functional test is still being worked on. > > A previous version of this series can be found at > https://lore.kernel.org/qemu-devel/20250619133154.264786-1-john.levon@nutanix.com/ > > Changes since last series: > > - fixed SPDX identifier nits > - code review changes for error handling > > thanks > john > > John Levon (18): > vfio-user: add vfio-user class and container > vfio-user: connect vfio proxy to remote server > vfio-user: implement message receive infrastructure > vfio-user: implement message send infrastructure > vfio-user: implement VFIO_USER_DEVICE_GET_INFO > vfio-user: implement VFIO_USER_DEVICE_GET_REGION_INFO > vfio-user: implement VFIO_USER_REGION_READ/WRITE > vfio-user: set up PCI in vfio_user_pci_realize() > vfio-user: implement VFIO_USER_DEVICE_GET/SET_IRQ* > vfio-user: forward MSI-X PBA BAR accesses to server > vfio-user: set up container access to the proxy > vfio-user: implement VFIO_USER_DEVICE_RESET > vfio-user: implement VFIO_USER_DMA_MAP/UNMAP > vfio-user: implement VFIO_USER_DMA_READ/WRITE > vfio-user: add 'x-msg-timeout' option > vfio-user: support posted writes > vfio-user: add coalesced posted writes > docs: add vfio-user documentation > > Thanos Makatos (1): > vfio-user: introduce vfio-user protocol specification > > MAINTAINERS | 11 +- > docs/interop/index.rst | 1 + > docs/interop/vfio-user.rst | 1520 +++++++++++++++++++++++++ > docs/system/device-emulation.rst | 1 + > docs/system/devices/vfio-user.rst | 26 + > meson.build | 1 + > hw/vfio-user/container.h | 23 + > hw/vfio-user/device.h | 24 + > hw/vfio-user/protocol.h | 242 ++++ > hw/vfio-user/proxy.h | 135 +++ > hw/vfio-user/trace.h | 4 + > hw/vfio/pci.h | 1 + > include/hw/vfio/vfio-container-base.h | 1 + > include/hw/vfio/vfio-device.h | 2 + > hw/vfio-user/container.c | 370 ++++++ > hw/vfio-user/device.c | 441 +++++++ > hw/vfio-user/pci.c | 475 ++++++++ > hw/vfio-user/proxy.c | 1356 ++++++++++++++++++++++ > hw/Kconfig | 1 + > hw/meson.build | 1 + > hw/vfio-user/Kconfig | 7 + > hw/vfio-user/meson.build | 11 + > hw/vfio-user/trace-events | 20 + > 23 files changed, 4673 insertions(+), 1 deletion(-) > create mode 100644 docs/interop/vfio-user.rst > create mode 100644 docs/system/devices/vfio-user.rst > create mode 100644 hw/vfio-user/container.h > create mode 100644 hw/vfio-user/device.h > create mode 100644 hw/vfio-user/protocol.h > create mode 100644 hw/vfio-user/proxy.h > create mode 100644 hw/vfio-user/trace.h > create mode 100644 hw/vfio-user/container.c > create mode 100644 hw/vfio-user/device.c > create mode 100644 hw/vfio-user/pci.c > create mode 100644 hw/vfio-user/proxy.c > create mode 100644 hw/vfio-user/Kconfig > create mode 100644 hw/vfio-user/meson.build > create mode 100644 hw/vfio-user/trace-events > Applied to vfio-next. Thanks, C.