migration/: fix some comment spelling errors

I found that there are many spelling errors in the comments of qemu,
so I used the spellcheck tool to check the spelling errors
and finally found some spelling errors in the migration folder.

Signed-off-by: zhaolichang <zhaolichang@huawei.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20200917075029.313-3-zhaolichang@huawei.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

migration/colo-failover.c

@@ -46,7 +46,7 @@ void failover_request_active(Error **errp)
 {
    if (failover_set_state(FAILOVER_STATUS_NONE,
         FAILOVER_STATUS_REQUIRE) != FAILOVER_STATUS_NONE) {
-        error_setg(errp, "COLO failover is already actived");
+        error_setg(errp, "COLO failover is already activated");
         return;
     }
     failover_bh = qemu_bh_new(colo_failover_bh, NULL);

migration/colo.c

@@ -632,7 +632,7 @@ out:
     /*
      * It is safe to unregister notifier after failover finished.
      * Besides, colo_delay_timer and colo_checkpoint_sem can't be
-     * released befor unregister notifier, or there will be use-after-free
+     * released before unregister notifier, or there will be use-after-free
      * error.
      */
     colo_compare_unregister_notifier(&packets_compare_notifier);

migration/multifd.c

@@ -731,7 +731,7 @@ static void multifd_new_send_channel_async(QIOTask *task, gpointer opaque)
         qemu_sem_post(&p->sem_sync);
         /*
          * Although multifd_send_thread is not created, but main migration
-         * thread neet to judge whether it is running, so we need to mark
+         * thread needs to judge whether it is running, so we need to mark
          * its status.
          */
         p->quit = true;
@@ -1042,7 +1042,7 @@ bool multifd_recv_all_channels_created(void)
 
 /*
  * Try to receive all multifd channels to get ready for the migration.
- * - Return true and do not set @errp when correctly receving all channels;
+ * - Return true and do not set @errp when correctly receiving all channels;
  * - Return false and do not set @errp when correctly receiving the current one;
  * - Return false and set @errp when failing to receive the current channel.
  */

migration/postcopy-ram.c

@@ -237,7 +237,7 @@ release_ufd:
  * request_ufd_features: this function should be called only once on a newly
  * opened ufd, subsequent calls will lead to error.
  *
- * Returns: true on succes
+ * Returns: true on success
  *
  * @ufd: fd obtained from userfaultfd syscall
  * @features: bit mask see UFFD_API_FEATURES
@@ -807,7 +807,7 @@ static void mark_postcopy_blocktime_end(uintptr_t addr)
 
     low_time_offset = get_low_time_offset(dc);
     /* lookup cpu, to clear it,
-     * that algorithm looks straighforward, but it's not
+     * that algorithm looks straightforward, but it's not
      * optimal, more optimal algorithm is keeping tree or hash
      * where key is address value is a list of  */
     for (i = 0; i < smp_cpus; i++) {

migration/postcopy-ram.h

@@ -161,7 +161,7 @@ struct PostCopyFD {
  */
 void postcopy_register_shared_ufd(struct PostCopyFD *pcfd);
 void postcopy_unregister_shared_ufd(struct PostCopyFD *pcfd);
-/* Call each of the shared 'waker's registerd telling them of
+/* Call each of the shared 'waker's registered telling them of
  * availability of a block.
  */
 int postcopy_notify_shared_wake(RAMBlock *rb, uint64_t offset);

migration/ram.c

@@ -256,7 +256,7 @@ int64_t ramblock_recv_bitmap_send(QEMUFile *file,
     /*
      * Always use little endian when sending the bitmap. This is
      * required that when source and destination VMs are not using the
-     * same endianess. (Note: big endian won't work.)
+     * same endianness. (Note: big endian won't work.)
      */
     bitmap_to_le(le_bitmap, block->receivedmap, nbits);
 
@@ -275,7 +275,7 @@ int64_t ramblock_recv_bitmap_send(QEMUFile *file,
     qemu_put_buffer(file, (const uint8_t *)le_bitmap, size);
     /*
      * Mark as an end, in case the middle part is screwed up due to
-     * some "misterious" reason.
+     * some "mysterious" reason.
      */
     qemu_put_be64(file, RAMBLOCK_RECV_BITMAP_ENDING);
     qemu_fflush(file);
@@ -718,7 +718,7 @@ static int save_xbzrle_page(RAMState *rs, uint8_t **current_data,
     /*
      * Reaching here means the page has hit the xbzrle cache, no matter what
      * encoding result it is (normal encoding, overflow or skipping the page),
-     * count the page as encoded. This is used to caculate the encoding rate.
+     * count the page as encoded. This is used to calculate the encoding rate.
      *
      * Example: 2 pages (8KB) being encoded, first page encoding generates 2KB,
      * 2nd page turns out to be skipped (i.e. no new bytes written to the
@@ -3705,7 +3705,7 @@ int ram_dirty_bitmap_reload(MigrationState *s, RAMBlock *block)
 
     /*
      * Note: see comments in ramblock_recv_bitmap_send() on why we
-     * need the endianess convertion, and the paddings.
+     * need the endianness conversion, and the paddings.
      */
     local_size = ROUND_UP(local_size, 8);
 
@@ -3743,7 +3743,7 @@ int ram_dirty_bitmap_reload(MigrationState *s, RAMBlock *block)
     }
 
     /*
-     * Endianess convertion. We are during postcopy (though paused).
+     * Endianness conversion. We are during postcopy (though paused).
      * The dirty bitmap won't change. We can directly modify it.
      */
     bitmap_from_le(block->bmap, le_bitmap, nbits);

migration/rdma.c

@@ -1511,7 +1511,7 @@ static int qemu_rdma_wait_comp_channel(RDMAContext *rdma)
     } else {
         /* This is the source side, we're in a separate thread
          * or destination prior to migration_fd_process_incoming()
-         * after postcopy, the destination also in a seprate thread.
+         * after postcopy, the destination also in a separate thread.
          * we can't yield; so we have to poll the fd.
          * But we need to be able to handle 'cancel' or an error
          * without hanging forever.
@@ -2268,7 +2268,7 @@ static inline int qemu_rdma_buffer_mergable(RDMAContext *rdma,
  *    chunk, then start a new chunk and flush() the old chunk.
  * 3. To keep the hardware busy, we also group chunks into batches
  *    and only require that a batch gets acknowledged in the completion
- *    qeueue instead of each individual chunk.
+ *    queue instead of each individual chunk.
  */
 static int qemu_rdma_write(QEMUFile *f, RDMAContext *rdma,
                            uint64_t block_offset, uint64_t offset,
@@ -3150,7 +3150,7 @@ static size_t qemu_rdma_save_page(QEMUFile *f, void *opaque,
     if (size > 0) {
         /*
          * Add this page to the current 'chunk'. If the chunk
-         * is full, or the page doen't belong to the current chunk,
+         * is full, or the page doesn't belong to the current chunk,
          * an actual RDMA write will occur and a new chunk will be formed.
          */
         ret = qemu_rdma_write(f, rdma, block_offset, offset, size);
@@ -4103,7 +4103,7 @@ void rdma_start_outgoing_migration(void *opaque,
         goto err;
     }
 
-    /* RDMA postcopy need a seprate queue pair for return path */
+    /* RDMA postcopy need a separate queue pair for return path */
     if (migrate_postcopy()) {
         rdma_return_path = qemu_rdma_data_init(host_port, errp);
 

migration/savevm.c

@@ -2795,7 +2795,7 @@ void qmp_xen_save_devices_state(const char *filename, bool has_live, bool live,
 
     if (!has_live) {
         /* live default to true so old version of Xen tool stack can have a
-         * successfull live migration */
+         * successful live migration */
         live = true;
     }
 
@@ -2818,7 +2818,7 @@ void qmp_xen_save_devices_state(const char *filename, bool has_live, bool live,
          * "xen-save-devices-state" and in case of migration failure, libxl
          * would call "cont".
          * So call bdrv_inactivate_all (release locks) here to let the other
-         * side of the migration take controle of the images.
+         * side of the migration take control of the images.
          */
         if (live && !saved_vm_running) {
             ret = bdrv_inactivate_all();