diff options
| author | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2015-11-05 18:10:53 +0000 |
|---|---|---|
| committer | Juan Quintela <quintela@redhat.com> | 2015-11-10 15:00:26 +0100 |
| commit | 11cf1d984b86b294972cd25df6286e5b2e98735d (patch) | |
| tree | f3b78d7444a7745bb2b756a8d9bb2f6c71015df6 /include | |
| parent | 093e3c429693f87fb917424c637ad8f599bd9e67 (diff) | |
MIG_CMD_PACKAGED: Send a packaged chunk of migration stream
MIG_CMD_PACKAGED is a migration command that wraps a chunk of migration
stream inside a package whose length can be determined purely by reading
its header. The destination guarantees that the whole MIG_CMD_PACKAGED
is read off the stream prior to parsing the contents.
This is used by postcopy to load device state (from the package)
while leaving the main stream free to receive memory pages.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/sysemu/sysemu.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h index 6225e00af2..c27b926615 100644 --- a/include/sysemu/sysemu.h +++ b/include/sysemu/sysemu.h @@ -99,9 +99,12 @@ enum qemu_vm_cmd { MIG_CMD_POSTCOPY_RAM_DISCARD, /* A list of pages to discard that were previously sent during precopy but are dirty. */ + MIG_CMD_PACKAGED, /* Send a wrapped stream within this stream */ MIG_CMD_MAX }; +#define MAX_VM_CMD_PACKAGED_SIZE (1ul << 24) + bool qemu_savevm_state_blocked(Error **errp); void qemu_savevm_state_begin(QEMUFile *f, const MigrationParams *params); @@ -114,6 +117,7 @@ void qemu_savevm_command_send(QEMUFile *f, enum qemu_vm_cmd command, uint16_t len, uint8_t *data); void qemu_savevm_send_ping(QEMUFile *f, uint32_t value); void qemu_savevm_send_open_return_path(QEMUFile *f); +int qemu_savevm_send_packaged(QEMUFile *f, const QEMUSizedBuffer *qsb); void qemu_savevm_send_postcopy_advise(QEMUFile *f); void qemu_savevm_send_postcopy_listen(QEMUFile *f); void qemu_savevm_send_postcopy_run(QEMUFile *f); |