Merge tag 'migration-20250502-pull-request' of https://gitlab.com/peterx/qemu into...

Migration pull request

- Prasad's few pre-requisite patches from multifd+postcopy enablement series
- Markus's fix on a latent bug for tls_authz setup
- Zhijian's latest RDMA series (includes the rdma soft-RoCE unit test)
- Jack's RDMA migration patch to re-enable ipv6
- Thomas's vmstate static checker update on rename field in acpi/ghes
- Peter's postcopy preempt optimization for locality hint

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* tag 'migration-20250502-pull-request' of https://gitlab.com/peterx/qemu:
  scripts/vmstate-static-checker.py: Allow new name for ghes_addr_le field
  migration/rdma: Remove qemu_rdma_broken_ipv6_kernel
  migration/postcopy: Spatial locality page hint for preempt mode
  tests/qtest/migration: consolidate set capabilities
  migration/ram: Implement save_postcopy_prepare()
  migration: Add save_postcopy_prepare() savevm handler
  migration: refactor channel discovery mechanism
  migration/multifd: move macros to multifd header
  migration: Fix latent bug in migrate_params_test_apply()
  migration: Add qtest for migration over RDMA
  migration: Unfold control_save_page()
  migration/rdma: Remove redundant migration_in_postcopy checks
  migration: disable RDMA + postcopy-ram
  migration: check RDMA and capabilities are compatible on both sides

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>