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During dirty page log sync, vfio_devices_all_dirty_tracking() is used to check if dirty tracking has been started in order to avoid errors. The current logic checks if migration is in ACTIVE or DEVICE states to ensure dirty tracking has been started. However, recently there has been an effort to simplify the migration status API and reduce it to a single migration_is_running() function. To accommodate this, refactor vfio_devices_all_dirty_tracking() logic so it won't use migration_is_active() and migration_is_device(). Instead, use internal VFIO dirty tracking flags. As a side effect, now that migration status is no longer used to detect dirty tracking status, VFIO log syncs are untied from migration. This will make calc-dirty-rate more accurate as now it will also include VFIO dirty pages. While at it, as VFIODevice->dirty_tracking is now used to detect dirty tracking status, add a comment that states how it's protected. Signed-off-by: Avihai Horon <avihaih@nvidia.com> Reviewed-by: Joao Martins <joao.m.martins@oracle.com> Tested-by: Joao Martins <joao.m.martins@oracle.com> Link: https://lore.kernel.org/r/20241218134022.21264-3-avihaih@nvidia.com Signed-off-by: Cédric Le Goater <clg@redhat.com> |
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| hw | ||
| io | ||
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| migration | ||
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| standard-headers | ||
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| elf.h | ||
| glib-compat.h | ||
| qemu-io.h | ||
| qemu-main.h | ||