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

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

mem + migration pull for 10.2

- Fabiano's patch to fix snapshot crash by rejecting some caps
- Marco's mapped-ram support on snapshot save/load
- Steve's cpr maintainers entry update on retirement
- Peter's coverity fixes
- Chenyi's tdx fix on hugetlbfs regression
- Peter's doc update on migrate resume flag
- Peter's doc update on HMP set parameter for cpr-exec-command's char** parsing
- Xiaoyao's guest-memfd fix for enabling shmem
- Arun's fix on error_fatal regression for migration errors
- Bin's fix on redundant error free for add block failures
- Markus's cleanup around MigMode sets
- Peter's two patches (out of loadvm threadify) to cleanup qio read peek process
- Thomas's vmstate-static-checker update for possible deprecation of argparse use
- Stefan's fix on windows deadlock by making unassigned MMIOs lockless

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* tag 'staging-pull-request' of https://gitlab.com/peterx/qemu: (36 commits)
  migration: Introduce POSTCOPY_DEVICE state
  migration: Make postcopy listen thread joinable
  migration: Respect exit-on-error when migration fails before resuming
  migration: Refactor all incoming cleanup info migration_incoming_destroy()
  migration: Introduce postcopy incoming setup and cleanup functions
  migration: Move postcopy_ram_listen_thread() to postcopy-ram.c
  migration: Do not try to start VM if disk activation fails
  migration: Flush migration channel after sending data of CMD_PACKAGED
  system/physmem: mark io_mem_unassigned lockless
  scripts/vmstate-static-checker: Fix deprecation warnings with latest argparse
  migration: vmsd errp handlers: return bool
  migration/vmstate: stop reporting error number for new _errp APIs
  tmp_emulator: improve and fix use of errp
  migration: vmstate_save_state_v(): fix error path
  migration: Properly wait on G_IO_IN when peeking messages
  io: Add qio_channel_wait_cond() helper
  migration: Put Error **errp parameter last
  migration: Use bitset of MigMode instead of variable arguments
  migration: Use unsigned instead of int for bit set of MigMode
  migration: Don't free the reason after calling migrate_add_blocker
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>