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Wed, 28 Jun 2023 00:31:13 -0700 From: Avihai Horon To: CC: Alex Williamson , =?utf-8?q?C=C3=A9dric_Le_G?= =?utf-8?q?oater?= , Juan Quintela , Peter Xu , Leonardo Bras , Zhenzhong Duan , Yishai Hadas , Jason Gunthorpe , Maor Gottlieb , Avihai Horon , Kirti Wankhede , Tarun Gupta , Joao Martins Subject: [PATCH v2 0/2] vfio/migration: Make VFIO migration non-experimental Date: Wed, 28 Jun 2023 10:31:10 +0300 Message-ID: <20230628073112.7958-1-avihaih@nvidia.com> X-Mailer: git-send-email 2.21.3 MIME-Version: 1.0 X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6NAM11FT068:EE_|SN7PR12MB8790:EE_ X-MS-Office365-Filtering-Correlation-Id: a9a0a44c-31d0-4232-3d3d-08db77a9b0ea X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.161; 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envelope-from=avihaih@nvidia.com; helo=NAM10-DM6-obe.outbound.protection.outlook.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_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Hello, The major parts of VFIO migration are supported today in QEMU. This includes basic VFIO migration, device dirty page tracking and precopy support. Thus, at this point in time, it seems appropriate to make VFIO migration non-experimental. This short series (which is based on the precopy series [1]) does that and also adds a few improvements: - Patch #1 resets bytes_transferred counter properly. - Patch #2 cleans up the VFIO migration realize flow and makes VFIO migration non-experimental. Note that Zhenzhong's series [2] fixes additional bugs and further cleans the VFIO migration realize flow. Changes from v1 [3]: * Dropped patch #1 as it's an optimization. (Cedric) * Added Fixes tag to patch #2. (Cedric) * Made VFIO device realization fail if migration is not supported and enable_migration is ON. (Cedric) * Kept the error message of errno == ENOTTY case as it was in vfio_migration_query_flags(). (Cedric) * Added a warn when enable_migration is ON and device dirty tracking is not supported. (Alex) * Renamed trace_vfio_migration_probe() to * trace_vfio_migration_realize(). Thanks. [1] https://lore.kernel.org/qemu-devel/20230621111201.29729-1-avihaih@nvidia.com/ [2] https://lore.kernel.org/qemu-devel/20230621080204.420723-1-zhenzhong.duan@intel.com/ [3] https://lore.kernel.org/qemu-devel/20230626082353.18535-1-avihaih@nvidia.com/ Avihai Horon (2): vfio/migration: Reset bytes_transferred properly vfio/migration: Make VFIO migration non-experimental include/hw/vfio/vfio-common.h | 7 +-- migration/migration.h | 1 + hw/vfio/common.c | 16 ++++++- hw/vfio/migration.c | 85 ++++++++++++++++++++++++----------- hw/vfio/pci.c | 4 +- migration/migration.c | 1 + migration/savevm.c | 1 + migration/target.c | 17 ++++++- hw/vfio/trace-events | 2 +- 9 files changed, 97 insertions(+), 37 deletions(-) Reviewed-by: Alex Williamson