motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2026-01-28 20:00:38 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions
qemu/migration
History
Peter Xu 1f9b657cae migration: Adjust locking in migration_maybe_pause() 
In migration_maybe_pause() QEMU may yield BQL before waiting for a
semaphore.  However it yields the BQL too early, which logically gives it
chance for the main thread to quickly take the BQL and modify the state to
CANCELLING.

To avoid such race condition from happening at all, always update the
migration states within the BQL.  It'll make sure no concurrent
cancellation can ever happen.

With that, IIUC there's chance we can remove the extra parameter in
migration_maybe_pause() to update active state, but that'll be done
separately later.

Signed-off-by: Peter Xu <peterx@redhat.com>
Tested-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Juraj Marcin <jmarcin@redhat.com>
Link: https://lore.kernel.org/r/20250114230746.3268797-9-peterx@redhat.com
Signed-off-by: Fabiano Rosas <farosas@suse.de>
2025-01-29 11:56:40 -03:00
..
block-active.c migration/block: Rewrite disk activation 2025-01-09 17:38:57 -03:00
block-dirty-bitmap.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
channel-block.c io: follow coroutine AioContext in qio_channel_yield() 2023-09-07 20:32:11 -05:00
channel-block.h migration: introduce a QIOChannel impl for BlockDriverState VMState 2022-06-22 19:33:43 +01:00
channel.c migration: Fix migration_channel_read_peek() error path 2024-01-04 09:52:42 +08:00
channel.h migration: check magic value for deciding the mapping of channels 2023-02-06 19:22:57 +01:00
colo-failover.c migration/colo: Improve an x-colo-lost-heartbeat error message 2023-02-23 14:10:17 +01:00
colo-stubs.c migration/colo: make colo_incoming_co() return void 2024-05-22 17:34:31 -03:00
colo.c migration/block: Rewrite disk activation 2025-01-09 17:38:57 -03:00
cpr-transfer.c migration: cpr-transfer save and load 2025-01-29 11:43:05 -03:00
cpr.c migration: cpr-transfer mode 2025-01-29 11:56:24 -03:00
cpu-throttle.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
dirtyrate.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
dirtyrate.h include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
exec.c migration: simplify exec migration functions 2024-03-04 07:12:40 +01:00
exec.h migration: convert exec backend to accept MigrateAddress. 2023-11-02 11:35:04 +01:00
fd.c migration: Allow pipes to keep working for fd migrations 2024-11-25 16:21:55 -05:00
fd.h migration: Revert mapped-ram multifd support to fd: URI 2024-03-22 12:12:08 -04:00
file.c migration/multifd: Pass in MultiFDPages_t to file_write_ramblock_iov 2024-09-03 16:24:35 -03:00
file.h migration/multifd: Pass in MultiFDPages_t to file_write_ramblock_iov 2024-09-03 16:24:35 -03:00
global_state.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
meson.build migration: cpr-transfer save and load 2025-01-29 11:43:05 -03:00
migration-hmp-cmds.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
migration-stats.c migration: migration_rate_limit_reset() don't need the QEMUFile 2023-10-31 08:44:33 +01:00
migration-stats.h migration: Remove transferred atomic counter 2023-10-31 08:44:33 +01:00
migration.c migration: Adjust locking in migration_maybe_pause() 2025-01-29 11:56:40 -03:00
migration.h migration: Do not construct JSON description if suppressed 2025-01-29 11:56:40 -03:00
multifd-nocomp.c multifd: bugfix for migration using compression methods 2025-01-09 17:40:15 -03:00
multifd-qatzip.c multifd: bugfix for incorrect migration data with qatzip compression 2025-01-09 17:40:27 -03:00
multifd-qpl.c multifd: bugfix for incorrect migration data with QPL compression 2025-01-09 17:40:21 -03:00
multifd-uadk.c migration/multifd: Fix compile error caused by page_size usage 2025-01-09 17:37:50 -03:00
multifd-zero-page.c migration/multifd: Move pages accounting into multifd_send_zero_page_detect() 2024-09-03 16:24:35 -03:00
multifd-zlib.c migration/multifd: Make MultiFDMethods const 2024-09-03 16:24:36 -03:00
multifd-zstd.c migration/multifd: Fix loop conditions in multifd_zstd_send_prepare and multifd_zstd_recv 2024-09-18 14:27:24 -04:00
multifd.c migration/multifd: Fix compat with QEMU < 9.0 2025-01-09 17:38:35 -03:00
multifd.h migration/multifd: Cleanup src flushes on condition check 2025-01-09 17:38:27 -03:00
options.c migration: cpr-transfer mode 2025-01-29 11:56:24 -03:00
options.h migration: Use device_class_set_props_n 2024-12-19 19:33:37 +01:00
page_cache.c migration: Fix cache_init()'s "Failed to allocate" error messages 2021-02-08 11:19:51 +00:00
page_cache.h migration: Clean up signed vs. unsigned XBZRLE cache-size 2021-02-08 11:19:51 +00:00
postcopy-ram.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
postcopy-ram.h migration/postcopy: Add postcopy-recover-setup phase 2024-06-21 09:47:59 -03:00
qemu-file.c migration: SCM_RIGHTS for QEMUFile 2025-01-29 11:43:05 -03:00
qemu-file.h migration: SCM_RIGHTS for QEMUFile 2025-01-29 11:43:05 -03:00
ram.c migration: cpr-transfer mode 2025-01-29 11:56:24 -03:00
ram.h migration/ram: Move RAM_SAVE_FLAG* into ram.h 2025-01-09 17:38:15 -03:00
rdma.c migration/rdma: Fix a memory issue for migration 2024-03-11 14:41:40 -04:00
rdma.h migration/ram: Move RAM_SAVE_FLAG* into ram.h 2025-01-09 17:38:15 -03:00
savevm.c migration: Synchronize all CPU states only for non-iterable dump 2025-01-29 11:56:40 -03:00
savevm.h migration: Drop inactivate_disk param in qemu_savevm_state_complete* 2025-01-29 11:56:40 -03:00
socket.c migration: Remove unused socket_send_channel_create_sync 2024-10-08 15:28:55 -04:00
socket.h migration: Remove unused socket_send_channel_create_sync 2024-10-08 15:28:55 -04:00
target.c migration: Add migration prefix to functions in target.c 2023-09-11 08:34:06 +02:00
threadinfo.c migration/multifd: Protect accesses to migration_threads 2023-07-26 10:55:56 +02:00
threadinfo.h migration/multifd: Protect accesses to migration_threads 2023-07-26 10:55:56 +02:00
tls.c migration: Drop unused parameter for migration_tls_client_create() 2023-05-03 11:24:20 +02:00
tls.h migration: Drop unused parameter for migration_tls_client_create() 2023-05-03 11:24:20 +02:00
trace-events migration: cpr-transfer save and load 2025-01-29 11:43:05 -03:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
vmstate-types.c migration: cpr-transfer mode 2025-01-29 11:56:24 -03:00
vmstate.c migration: Fix arrays of pointers in JSON writer 2025-01-09 17:39:54 -03:00
xbzrle.c migration/xbzrle: Use i386 host/cpuinfo.h 2023-05-23 16:51:18 -07:00
xbzrle.h migration/xbzrle: Use i386 host/cpuinfo.h 2023-05-23 16:51:18 -07:00
yank_functions.c migration/yank: Use channel features 2024-01-29 11:02:12 +08:00
yank_functions.h migration: Move the yank unregister of channel_close out 2021-07-26 12:45:03 +01:00