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migration: new message MIG_RP_MSG_RESUME_ACK

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Creating new message to reply for MIG_CMD_POSTCOPY_RESUME. One uint32_t
is used as payload to let the source know whether destination is ready
to continue the migration.

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20180502104740.12123-15-peterx@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Peter Xu 2018-05-02 18:47:30 +08:00 • committed by Juan Quintela
parent 3f5875eca5
commit 13955b89ce
4 changed files with 43 additions and 1 deletions
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3
migration/migration.h
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@ -24,6 +24,8 @@
struct PostcopyBlocktimeContext;
#define MIGRATION_RESUME_ACK_VALUE (1)
/* State for the incoming migration */
struct MigrationIncomingState {
QEMUFile *from_src_file;
@ -262,6 +264,7 @@ int migrate_send_rp_req_pages(MigrationIncomingState *mis, const char* rbname,
ram_addr_t start, size_t len);
void migrate_send_rp_recv_bitmap(MigrationIncomingState *mis,
char *block_name);
void migrate_send_rp_resume_ack(MigrationIncomingState *mis, uint32_t value);
void dirty_bitmap_mig_before_vm_start(void);
void init_dirty_bitmap_incoming_migration(void);