diff options
Diffstat (limited to 'migration/ram.c')
| -rw-r--r-- | migration/ram.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/migration/ram.c b/migration/ram.c index 85bc361..2b0774c 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -3213,11 +3213,11 @@ static int ram_state_init(RAMState **rsp) QSIMPLEQ_INIT(&(*rsp)->src_page_requests); /* + * Count the total number of pages used by ram blocks not including any + * gaps due to alignment or unplugs. * This must match with the initial values of dirty bitmap. - * Currently we initialize the dirty bitmap to all zeros so - * here the total dirty page count is zero. */ - (*rsp)->migration_dirty_pages = 0; + (*rsp)->migration_dirty_pages = ram_bytes_total() >> TARGET_PAGE_BITS; ram_state_reset(*rsp); return 0; @@ -3249,12 +3249,13 @@ static void ram_list_init_bitmaps(void) * The initial dirty bitmap for migration must be set with all * ones to make sure we'll migrate every guest RAM page to * destination. - * Here we didn't set RAMBlock.bmap simply because it is already - * set in ram_list.dirty_memory[DIRTY_MEMORY_MIGRATION] in - * ram_block_add, and that's where we'll sync the dirty bitmaps. - * Here setting RAMBlock.bmap would be fine too but not necessary. + * Here we set RAMBlock.bmap all to 1 because when rebegin a + * new migration after a failed migration, ram_list. + * dirty_memory[DIRTY_MEMORY_MIGRATION] don't include the whole + * guest memory. */ block->bmap = bitmap_new(pages); + bitmap_set(block->bmap, 0, pages); block->clear_bmap_shift = shift; block->clear_bmap = bitmap_new(clear_bmap_size(pages, shift)); if (migrate_postcopy_ram()) { |