diff options
Diffstat (limited to 'migration/migration.h')
| -rw-r--r-- | migration/migration.h | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/migration/migration.h b/migration/migration.h index deb411aaad..d096b77f74 100644 --- a/migration/migration.h +++ b/migration/migration.h @@ -104,6 +104,23 @@ struct MigrationIncomingState { /* List of listening socket addresses */ SocketAddressList *socket_address_list; + + /* A tree of pages that we requested to the source VM */ + GTree *page_requested; + /* For debugging purpose only, but would be nice to keep */ + int page_requested_count; + /* + * The mutex helps to maintain the requested pages that we sent to the + * source, IOW, to guarantee coherent between the page_requests tree and + * the per-ramblock receivedmap. Note! This does not guarantee consistency + * of the real page copy procedures (using UFFDIO_[ZERO]COPY). E.g., even + * if one bit in receivedmap is cleared, UFFDIO_COPY could have happened + * for that page already. This is intended so that the mutex won't + * serialize and blocked by slow operations like UFFDIO_* ioctls. However + * this should be enough to make sure the page_requested tree always + * contains valid information. + */ + QemuMutex page_request_mutex; }; MigrationIncomingState *migration_incoming_get_current(void); @@ -124,8 +141,7 @@ struct MigrationClass { DeviceClass parent_class; }; -struct MigrationState -{ +struct MigrationState { /*< private >*/ DeviceState parent_obj; @@ -332,7 +348,9 @@ void migrate_send_rp_shut(MigrationIncomingState *mis, void migrate_send_rp_pong(MigrationIncomingState *mis, uint32_t value); int migrate_send_rp_req_pages(MigrationIncomingState *mis, RAMBlock *rb, - ram_addr_t start); + ram_addr_t start, uint64_t haddr); +int migrate_send_rp_message_req_pages(MigrationIncomingState *mis, + RAMBlock *rb, ram_addr_t start); void migrate_send_rp_recv_bitmap(MigrationIncomingState *mis, char *block_name); void migrate_send_rp_resume_ack(MigrationIncomingState *mis, uint32_t value); |