Merge tag 'migration-20260217-pull-request' of https://gitlab.com/farosas/qemu into...

Migration pull request

- Notifier changes: Remove duplicated events during postcopy. Emit
  MIG_EVENT_FAILED before the VM is started.

- Undefined behavior fix for tls-tests.

- Cleanups: COLO, savevm handlers, CPR/VFIOheaders.

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* tag 'migration-20260217-pull-request' of https://gitlab.com/farosas/qemu: (32 commits)
  tests/qtest/migration/tls-tests.c: Don't use tls_psk end hook for no_tls tests
  migration/cpr: Include vfio-cpr.h instead of vfio-device.h
  migration/colo/xen: Use generic helpers in qemu_save_device_state()
  migration: Simplify qemu_save_device_state()
  migration: Make qemu_savevm_state_non_iterable() take errp
  migration/bg-snapshot: Cleanup error paths
  migration: Introduce qemu_savevm_state_active()
  migration: Refactor qemu_savevm_state_setup()
  migration: Cleanup error propagates in qemu_savevm_state_setup()
  migration: qemu_savevm_state_complete_precopy() take MigrationState*
  migration: Split qemu_savevm_state_complete_precopy_non_iterable()
  migration: Provide helper for save vm description
  migration: Introduce qemu_savevm_state_end()
  migration/postcopy: Send device states without copying buffer
  migration/colo: Send device states without copying buffer
  migration: Drop qemu_file_set_error() when save non-iterable fails
  migration: Drop iterable_only in qemu_savevm_state_complete_precopy
  migration/colo: Document qemu_fflush(fb)
  migration/colo: Use the RAM iterable helper directly
  colo: Forbid VM resume during checkpointing
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>