qemu/migration/migration.h

63  * big enough and make sure we won't overflow easily.
75      * This points to the host page we're going to install for this temp page.
76      * It tells us after we've received the whole page, where we should put it.
100      * Used to sync thread creations.  Note that we can't create threads in
116     /* Set this when we want the fault thread to quit */
127     QemuMutex rp_mutex;    /* We send replies from multiple threads */
187     /* The coroutine we should enter (back) after failover */
215     /* A tree of pages that we requested to the source VM */
223      * The mutex helps to maintain the requested pages that we sent to the
285      * used for both the start or recover of a postcopy migration.  We'll
287      * main thread, and we keep post() and wait() in pair.
292      * Protects to_dst_file/from_dst_file pointers.  We need to make sure we
331          * We can also check non-zero of rp_thread, but there's no "official"
345          * We post to this when we got one PONG from dest. So far it's an
366      * If migration is interrupted by any reason, we need to continue
393        We used the mutex to be able to return the 1st error message */
399      * Global switch on whether we need to store the global state
404     /* Whether we send QEMU_VM_CONFIGURATION during migration */
406     /* Whether we send section footer during migration */
408     /* Whether we send switchover start notification during migration */
445      * This assures that we can't mix pages from one iteration through
446      * ram pages with pages for the following iteration.  We really
447      * only need to do this flush after we have go through all the
448      * dirty pages.  For historical reasons, we do that after each
449      * section.  This is suboptimal (we flush too many times).
489      * be GUEST_PAGE_SIZE << N.  Say, N=0 means we will clear dirty
490      * bitmap for each page to send (1<<0=1); N=10 means we will clear