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| author | zhanghailiang <zhang.zhanghailiang@huawei.com> | 2020-02-24 14:54:11 +0800 |
|---|---|---|
| committer | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2020-03-13 09:36:30 +0000 |
| commit | 8af66371ed8e86c7caea9b814dcee23e8ba08f79 (patch) | |
| tree | 5c05b9b7c9d1cbdeaadf3e0da47b9c011aa4f4eb /migration/ram.c | |
| parent | 0393031a16735835a441b6d6e0495a1bd14adb90 (diff) | |
| download | qemu-8af66371ed8e86c7caea9b814dcee23e8ba08f79.zip qemu-8af66371ed8e86c7caea9b814dcee23e8ba08f79.tar.gz qemu-8af66371ed8e86c7caea9b814dcee23e8ba08f79.tar.bz2 | |
ram/colo: only record bitmap of dirty pages in COLO stage
It is only need to record bitmap of dirty pages while goes
into COLO stage.
Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Message-Id: <20200224065414.36524-6-zhang.zhanghailiang@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Diffstat (limited to 'migration/ram.c')
| -rw-r--r-- | migration/ram.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/migration/ram.c b/migration/ram.c index 31f4a9d..c12cfdb 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -2742,7 +2742,7 @@ static inline void *host_from_ram_block_offset(RAMBlock *block, } static inline void *colo_cache_from_block_offset(RAMBlock *block, - ram_addr_t offset) + ram_addr_t offset, bool record_bitmap) { if (!offset_in_ramblock(block, offset)) { return NULL; @@ -2758,7 +2758,8 @@ static inline void *colo_cache_from_block_offset(RAMBlock *block, * It help us to decide which pages in ram cache should be flushed * into VM's RAM later. */ - if (!test_and_set_bit(offset >> TARGET_PAGE_BITS, block->bmap)) { + if (record_bitmap && + !test_and_set_bit(offset >> TARGET_PAGE_BITS, block->bmap)) { ram_state->migration_dirty_pages++; } return block->colo_cache + offset; @@ -3416,13 +3417,13 @@ static int ram_load_precopy(QEMUFile *f) if (migration_incoming_colo_enabled()) { if (migration_incoming_in_colo_state()) { /* In COLO stage, put all pages into cache temporarily */ - host = colo_cache_from_block_offset(block, addr); + host = colo_cache_from_block_offset(block, addr, true); } else { /* * In migration stage but before COLO stage, * Put all pages into both cache and SVM's memory. */ - host_bak = colo_cache_from_block_offset(block, addr); + host_bak = colo_cache_from_block_offset(block, addr, false); } } if (!host) { |