This series collects several small improvements to the migration
subsystem:
- Bug fix: off-by-one in multifd recv channel ID validation that
could allow an out-of-bounds write (patch 5).
- Micro-optimizations: cache migrate_multifd_channels() in hot
paths (patches 7-8), use stack-allocated bitmap instead of
heap (patch 4), avoid per-element heap churn in vmstate ptr
marker field (patch 3).
- Cleanups: collapse migration_fd_valid into a single boolean
expression (patch 1), replace strcpy("") with explicit NUL
termination (patch 2), merge thread-join and cleanup loops in
multifd_recv_cleanup (patch 6).
No functional change intended except for the off-by-one fix in
patch 5.
Bin Guo (8):
migration/fd: collapse migration_fd_valid into single boolean
expression
migration/global_state: replace strcpy("") with explicit NUL
termination
migration/vmstate: avoid per-element heap churn in vmsd ptr marker
field
migration/savevm: use stack-allocated bitmap in
configuration_validate_capabilities
migration/multifd: fix off-by-one in recv channel ID validation
migration/multifd: merge thread-join and cleanup loops in
multifd_recv_cleanup
migration/multifd: cache migrate_multifd_channels() in send/recv hot
paths
migration/multifd: cache channel count in multifd_send_sync_main
migration/fd.c | 10 +---------
migration/global_state.c | 2 +-
migration/multifd.c | 32 +++++++++++++++++--------------
migration/savevm.c | 5 ++---
migration/vmstate.c | 41 ++++++++++++++++------------------------
5 files changed, 38 insertions(+), 52 deletions(-)
--
2.50.1 (Apple Git-155)
