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| author | Maciej S. Szmigiero <maciej.szmigiero@oracle.com> | 2025-03-04 23:03:36 +0100 |
|---|---|---|
| committer | Cédric Le Goater <clg@redhat.com> | 2025-03-06 06:47:33 +0100 |
| commit | b1937fd1eb8360d0dc0abb0a8da221d8edce3733 (patch) | |
| tree | 743f2575705e15fa3bee4b21e8b123f41dae99f7 /include | |
| parent | 18eb55546a54e443d94a4c49286348176ad4b00a (diff) | |
| download | qemu-b1937fd1eb8360d0dc0abb0a8da221d8edce3733.zip qemu-b1937fd1eb8360d0dc0abb0a8da221d8edce3733.tar.gz qemu-b1937fd1eb8360d0dc0abb0a8da221d8edce3733.tar.bz2 | |
migration: Add thread pool of optional load threads
Some drivers might want to make use of auxiliary helper threads during VM
state loading, for example to make sure that their blocking (sync) I/O
operations don't block the rest of the migration process.
Add a migration core managed thread pool to facilitate this use case.
The migration core will wait for these threads to finish before
(re)starting the VM at destination.
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Link: https://lore.kernel.org/qemu-devel/b09fd70369b6159c75847e69f235cb908b02570c.1741124640.git.maciej.szmigiero@oracle.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/migration/misc.h | 3 | ||||
| -rw-r--r-- | include/qemu/typedefs.h | 2 |
2 files changed, 5 insertions, 0 deletions
diff --git a/include/migration/misc.h b/include/migration/misc.h index c660be8..4c171f4 100644 --- a/include/migration/misc.h +++ b/include/migration/misc.h @@ -45,9 +45,12 @@ bool migrate_ram_is_ignored(RAMBlock *block); /* migration/block.c */ AnnounceParameters *migrate_announce_params(void); + /* migration/savevm.c */ void dump_vmstate_json_to_file(FILE *out_fp); +void qemu_loadvm_start_load_thread(MigrationLoadThread function, + void *opaque); /* migration/migration.c */ void migration_object_init(void); diff --git a/include/qemu/typedefs.h b/include/qemu/typedefs.h index 3d84efc..fd23ff7 100644 --- a/include/qemu/typedefs.h +++ b/include/qemu/typedefs.h @@ -131,5 +131,7 @@ typedef struct IRQState *qemu_irq; * Function types */ typedef void (*qemu_irq_handler)(void *opaque, int n, int level); +typedef bool (*MigrationLoadThread)(void *opaque, bool *should_quit, + Error **errp); #endif /* QEMU_TYPEDEFS_H */ |