qemu/migration
Peter Xu 36f62f11e4 migration: Postcopy preemption preparation on channel creation
Create a new socket for postcopy to be prepared to send postcopy requested
pages via this specific channel, so as to not get blocked by precopy pages.

A new thread is also created on dest qemu to receive data from this new channel
based on the ram_load_postcopy() routine.

The ram_load_postcopy(POSTCOPY) branch and the thread has not started to
function, and that'll be done in follow up patches.

Cleanup the new sockets on both src/dst QEMUs, meanwhile look after the new
thread too to make sure it'll be recycled properly.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20220707185502.27149-1-peterx@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
  dgilbert: With Peter's fix to quieten compiler warning on
       start_migration
2022-07-20 12:15:08 +01:00
..
block-dirty-bitmap.c migration: block-dirty-bitmap: add missing qemu_mutex_lock_iothread 2021-10-05 13:10:29 +02:00
block.c block: Change blk_{pread,pwrite}() param order 2022-07-12 12:14:56 +02:00
block.h migration: disable auto-converge during bulk block migration 2017-09-27 11:27:14 +01:00
channel-block.c migration: introduce a QIOChannel impl for BlockDriverState VMState 2022-06-22 19:33:43 +01:00
channel-block.h migration: introduce a QIOChannel impl for BlockDriverState VMState 2022-06-22 19:33:43 +01:00
channel.c migration: remove the QEMUFileOps abstraction 2022-06-23 10:18:13 +01:00
channel.h migration: Route errors down through migration_channel_connect 2018-02-06 10:55:12 +00:00
colo-failover.c qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
colo.c migration: remove the QEMUFileOps abstraction 2022-06-23 10:18:13 +01:00
dirtyrate.c migration/dirtyrate: Refactor dirty page rate calculation 2022-07-20 12:15:08 +01:00
dirtyrate.h migration/dirtyrate: Refactor dirty page rate calculation 2022-07-20 12:15:08 +01:00
exec.c migration: unify incoming processing 2018-07-10 12:48:53 +01:00
exec.h migration: Export exec.c functions in its own file 2017-06-01 18:49:22 +02:00
fd.c monitor: Use getter/setter functions for cur_mon 2020-10-09 07:08:19 +02:00
fd.h migration: Fix fd protocol for incoming defer 2019-06-05 12:43:55 +02:00
global_state.c migration: Silence compiler warning in global_state_store_running() 2020-10-02 12:28:48 +01:00
meson.build migration: remove the QEMUFileOps abstraction 2022-06-23 10:18:13 +01:00
migration.c migration: Postcopy preemption preparation on channel creation 2022-07-20 12:15:08 +01:00
migration.h migration: Postcopy preemption preparation on channel creation 2022-07-20 12:15:08 +01:00
multifd-zlib.c multifd: Copy pages before compressing them with zlib 2022-07-20 12:15:08 +01:00
multifd-zstd.c multifd: recv side only needs the RAMBlock host address 2022-01-28 15:38:23 +01:00
multifd.c migration: rename qemu_file_update_transfer to qemu_file_acct_rate_limit 2022-06-22 19:33:43 +01:00
multifd.h multifd: Implement zero copy write in multifd migration (multifd-zero-copy) 2022-05-16 13:56:24 +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 migration: Postcopy preemption preparation on channel creation 2022-07-20 12:15:08 +01:00
postcopy-ram.h migration: Postcopy preemption preparation on channel creation 2022-07-20 12:15:08 +01:00
qemu-file.c migration: remove the QEMUFileOps abstraction 2022-06-23 10:18:13 +01:00
qemu-file.h migration: remove the QEMUFileOps abstraction 2022-06-23 10:18:13 +01:00
ram.c migration: Postcopy preemption preparation on channel creation 2022-07-20 12:15:08 +01:00
ram.h migration: Postcopy preemption preparation on channel creation 2022-07-20 12:15:08 +01:00
rdma.c migration: remove the QEMUFileOps abstraction 2022-06-23 10:18:13 +01:00
rdma.h migration: Export rdma.c functions in its own file 2017-06-01 18:49:23 +02:00
savevm.c migration: Postcopy preemption preparation on channel creation 2022-07-20 12:15:08 +01:00
savevm.h migration: Add blocker information 2021-02-08 11:19:51 +00:00
socket.c migration: Postcopy preemption preparation on channel creation 2022-07-20 12:15:08 +01:00
socket.h migration: Postcopy preemption preparation on channel creation 2022-07-20 12:15:08 +01:00
target.c migration: Move populate_vfio_info() into a separate file 2021-05-14 12:31:51 +02:00
tls.c migration: fix use of TLS PSK credentials with a UNIX socket 2022-04-21 19:36:46 +01:00
tls.h migration: Fix Lesser GPL version number 2020-11-15 16:43:28 +01:00
trace-events migration: Postcopy preemption preparation on channel creation 2022-07-20 12:15:08 +01:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
vmstate-types.c Move CPU softfloat unions to cpu-float.h 2022-04-06 14:31:43 +02:00
vmstate.c migration: rename qemu_ftell to qemu_file_total_transferred 2022-06-22 19:33:36 +01:00
xbzrle.c migration: Create migration/xbzrle.h 2017-05-18 18:04:54 +02:00
xbzrle.h migration: Create migration/xbzrle.h 2017-05-18 18:04:54 +02:00
yank_functions.c migration: Move the yank unregister of channel_close out 2021-07-26 12:45:03 +01:00
yank_functions.h migration: Move the yank unregister of channel_close out 2021-07-26 12:45:03 +01:00