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([2a01:e0a:165:d60:38c8:6df5:c9ca:a366]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4409d29b9c4sm50340585e9.3.2025.04.25.00.57.32 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 25 Apr 2025 00:57:32 -0700 (PDT) Message-ID: <0342e4c4-d40e-4daa-b96d-a0af66534429@redhat.com> Date: Fri, 25 Apr 2025 09:57:31 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 00/37] vfio: Spring cleanup To: qemu-devel@nongnu.org, Alex Williamson Cc: Avihai Horon , Eric Auger , Zhenzhong Duan , John Levon , Joao Martins References: <20250422160224.199714-1-clg@redhat.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: <20250422160224.199714-1-clg@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=170.10.133.124; envelope-from=clg@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.84, 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_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_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 4/22/25 18:01, Cédric Le Goater wrote: > Hello, > > Several large extensions were merged in VFIO recently: migration > support with dirty tracking, support for different host IOMMU backend > devices, multifd support, etc. This adds up to the previous > extensions: vfio-platform, AP, CCW. The result is that VFIO is now a > subsystem of over +16,000 lines of code : > > QEMU 2.0 : 3988 total > ... > QEMU 10.0 : 16607 total > > Organization is weak, naming inconsistent, the vfio-common.h header > file and common.c are quite messy. It's time to address the technical > debt before adding new features. > > This proposal reorganizes some of the VFIO files to isolate features, > introduces new files and renames services to better reflect the > namespace they belong to. This is code reshuffling and there are no > intentional functional changes. If more could be done, please propose ! > Timing seems right. > > > I have taken care to preserve all existing copyright notices in the > file headers. I have added one on behalf of my current employer for > newly created files. However, original authors may wish to include > their own notices as well. If so, please respond to the patch, and I > will update the patch in the next spin or before applying. > > Here is a (short) list requiring your attention : > > * include/hw/vfio/vfio-migration.h > * hw/vfio/vfio-migration-internal.h > Kirti Wankhede and Avihai Horon, NVIDIA > > * hw/vfio/vfio-iommufd.h > Joao Martins and Yi Liu, Oracle and Intel > > * include/hw/vfio/vfio-region.h > * hw/vfio/region.c > Eric Auger, may be we could reduce the list ? > > I think the remaining new files are correctly covered but I am human, > so please review and let me know. > > I hope we can merge this when the QEMU 10.1 cycle starts and then > address the two large series waiting : live update and vfio-user. > > > What next in terms of cleanups : > > - container.c is quite messy > - the pci* files need some love too (add vfio- prefix ?) > - improve overall documentation, structs and routines documentation > would be great > - isolate all the low level routines (kvm ioctls) into helpers.c > to improve build ? > - improve build to reduce the number of files built per target > https://lore.kernel.org/qemu-devel/20250308230917.18907-1-philmd@linaro.org > - continue the never ending quest of adding 'Error **' parameters, > Look for migration_file_set_error, in MemoryListener handlers : > vfio_listener_region_add > vfio_listener_log_global_stop > vfio_listener_log_sync > and in callback routines for IOMMU notifiers : > vfio_iommu_map_notify > vfio_iommu_map_dirty_notify > memory_region_iommu_replay() would be a start. > - remove vfio-platform (start of QEMU 10.2 cycle ~ September 2025) > > Thanks, > > C. > > > Changes in v3: > > - Fixed commit log typos > - Removed hw/vfio/vfio-migration.h include from > hw/vfio/migration-multifd.c > - Added hw/vfio/vfio-region.h include in hw/vfio/pci.h > - Adjusted Copyright in hw/vfio/vfio-cpr.h > - Renamed vfio_container_vioc_query_dirty_bitmap() to > vfio_container_iommu_query_dirty_bitmap() > - Improved hw/vfio/vfio-device.h header description > - Fixed code alignment when renaming VFIODevice related services > > Changes in v2: > > - Dropped vfio_migration_set_error() > https://lore.kernel.org/qemu-devel/20250324123315.637827-1-clg@redhat.com/ > - Dropped R-b trailers on patches which were modified too much > (context changes are ok) > - Improved commit logs of patches adding new files > - Fixed top comment in header files > - Used a 'vfio_migration_' prefix instead of 'vfio_mig_' > - Made vfio_migration_add_bytes_transferred() internal > - Added extra patch for vfio_device_state_is_running/precopy() > - Moved vfio_reset_handler() in device.c > - Moved "dirty tracking" related services into container-base.c and > improved naming > - Introduced listener.* files instead of dirty-tracking.* > - Introduced vfio_listener_un/register() routines > > > Cédric Le Goater (37): > vfio: Move vfio_mig_active() into migration.c > vfio: Rename vfio_reset_bytes_transferred() > vfio: Introduce a new header file for external migration services > vfio: Make vfio_un/block_multiple_devices_migration() static > vfio: Make vfio_viommu_preset() static > vfio: Introduce a new header file for internal migration services > vfio: Move vfio_device_state_is_running/precopy() into migration.c > vfio: Introduce a new header file for VFIOdisplay declarations > vfio: Move VFIOHostDMAWindow definition into spapr.c > vfio: Introduce a new header file for VFIOIOMMUFD declarations > vfio: Introduce new files for VFIORegion definitions and declarations > vfio: Introduce a new header file for VFIOcontainer declarations > vfio: Make vfio_group_list static > vfio: Move VFIOAddressSpace helpers into container-base.c > vfio: Move Host IOMMU type declarations into their respective files > vfio: Introduce a new header file for helper services > vfio: Move vfio_get_info_dma_avail() into helpers.c > vfio: Move vfio_kvm_device_add/del_fd() to helpers.c > vfio: Move vfio_get_device_info() to helpers.c > vfio: Introduce a new file for VFIODevice definitions > vfio: Introduce new files for CPR definitions and declarations > vfio: Move vfio_kvm_device_fd() into helpers.c > vfio: Move vfio_device_list into device.c > vfio: Move vfio_de/attach_device() into device.c > vfio: Move vfio_reset_handler() into device.c > vfio: Move dirty tracking related services into container-base.c > vfio: Make vfio_devices_query_dirty_bitmap() static > vfio: Make vfio_container_query_dirty_bitmap() static > vfio: Rename vfio_devices_all_dirty_tracking_started() > vfio: Rename vfio_devices_all_device_dirty_tracking() > vfio: Rename vfio_get_dirty_bitmap() > vfio: Introduce new files for VFIO MemoryListener > vfio: Rename RAM discard related services > vfio: Introduce vfio_listener_un/register() routines > vfio: Rename vfio-common.h to vfio-device.h > vfio: Rename VFIODevice related services > vfio: Rename VFIOContainer related services > > hw/vfio/migration-multifd.h | 2 +- > hw/vfio/pci.h | 4 +- > hw/vfio/vfio-cpr.h | 15 + > hw/vfio/vfio-display.h | 42 ++ > hw/vfio/vfio-helpers.h | 35 ++ > hw/vfio/vfio-iommufd.h | 34 ++ > hw/vfio/vfio-listener.h | 15 + > hw/vfio/vfio-migration-internal.h | 74 +++ > include/hw/s390x/vfio-ccw.h | 2 +- > include/hw/vfio/vfio-common.h | 346 ------------- > include/hw/vfio/vfio-container-base.h | 12 +- > include/hw/vfio/vfio-container.h | 36 ++ > include/hw/vfio/vfio-device.h | 149 ++++++ > include/hw/vfio/vfio-migration.h | 16 + > include/hw/vfio/vfio-platform.h | 4 +- > include/hw/vfio/vfio-region.h | 47 ++ > backends/iommufd.c | 2 +- > hw/core/sysbus-fdt.c | 1 + > hw/ppc/spapr_pci_vfio.c | 6 +- > hw/s390x/s390-pci-vfio.c | 3 +- > hw/vfio/ap.c | 14 +- > hw/vfio/ccw.c | 30 +- > hw/vfio/container-base.c | 192 ++++++- > hw/vfio/container.c | 123 ++--- > hw/vfio/cpr.c | 3 +- > hw/vfio/device.c | 405 +++++++++++++++ > hw/vfio/display.c | 10 +- > hw/vfio/helpers.c | 702 +++----------------------- > hw/vfio/igd.c | 10 +- > hw/vfio/iommufd.c | 24 +- > hw/vfio/{common.c => listener.c} | 455 +---------------- > hw/vfio/migration-multifd.c | 7 +- > hw/vfio/migration.c | 111 +++- > hw/vfio/pci.c | 70 +-- > hw/vfio/platform.c | 15 +- > hw/vfio/region.c | 395 +++++++++++++++ > hw/vfio/spapr.c | 10 +- > migration/target.c | 8 +- > hw/vfio/meson.build | 10 +- > hw/vfio/trace-events | 36 +- > 40 files changed, 1875 insertions(+), 1600 deletions(-) > create mode 100644 hw/vfio/vfio-cpr.h > create mode 100644 hw/vfio/vfio-display.h > create mode 100644 hw/vfio/vfio-helpers.h > create mode 100644 hw/vfio/vfio-iommufd.h > create mode 100644 hw/vfio/vfio-listener.h > create mode 100644 hw/vfio/vfio-migration-internal.h > delete mode 100644 include/hw/vfio/vfio-common.h > create mode 100644 include/hw/vfio/vfio-container.h > create mode 100644 include/hw/vfio/vfio-device.h > create mode 100644 include/hw/vfio/vfio-migration.h > create mode 100644 include/hw/vfio/vfio-region.h > create mode 100644 hw/vfio/device.c > rename hw/vfio/{common.c => listener.c} (76%) > create mode 100644 hw/vfio/region.c > Rebased on HEAD and applied to vfio-next. Thanks, C.