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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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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# ZGhhdC5jb20ACgkQO1/MzfOr1wZhTgEA8eCBMpM7PusNSdzzeIygKnIp2A8I70ca
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# gpg: Signature made Mon 03 Nov 2025 10:06:04 PM CET
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# gpg: Good signature from "Peter Xu <xzpeter@gmail.com>" [unknown]
# gpg:                 aka "Peter Xu <peterx@redhat.com>" [unknown]
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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>

scripts/vmstate-static-checker.py

@@ -21,6 +21,7 @@
 
 import argparse
 import json
+import pathlib
 import sys
 
 # Count the number of errors found
@@ -382,10 +383,10 @@ def main():
     help_text = "Parse JSON-formatted vmstate dumps from QEMU in files SRC and DEST.  Checks whether migration from SRC to DEST QEMU versions would break based on the VMSTATE information contained within the JSON outputs.  The JSON output is created from a QEMU invocation with the -dump-vmstate parameter and a filename argument to it.  Other parameters to QEMU do not matter, except the -M (machine type) parameter."
 
     parser = argparse.ArgumentParser(description=help_text)
-    parser.add_argument('-s', '--src', type=argparse.FileType('r'),
+    parser.add_argument('-s', '--src', type=pathlib.Path,
                         required=True,
                         help='json dump from src qemu')
-    parser.add_argument('-d', '--dest', type=argparse.FileType('r'),
+    parser.add_argument('-d', '--dest', type=pathlib.Path,
                         required=True,
                         help='json dump from dest qemu')
     parser.add_argument('--reverse', required=False, default=False,
@@ -393,10 +394,10 @@ def main():
                         help='reverse the direction')
     args = parser.parse_args()
 
-    src_data = json.load(args.src)
-    dest_data = json.load(args.dest)
-    args.src.close()
-    args.dest.close()
+    with open(args.src, 'r', encoding='utf-8') as src_fh:
+        src_data = json.load(src_fh)
+    with open(args.dest, 'r', encoding='utf-8') as dst_fh:
+        dest_data = json.load(dst_fh)
 
     if args.reverse:
         temp = src_data