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1ffb5dfd35
In function cpu_physical_memory_sync_dirty_bitmap, file
include/exec/ram_addr.h:
if (src[idx][offset]) {
unsigned long bits = atomic_xchg(&src[idx][offset], 0);
unsigned long new_dirty;
new_dirty = ~dest[k];
dest[k] |= bits;
new_dirty &= bits;
num_dirty += ctpopl(new_dirty);
}
After these codes executed, only the pages not dirtied in bitmap(dest),
but dirtied in dirty_memory[DIRTY_MEMORY_MIGRATION] will be calculated.
For example:
When ram_list.dirty_memory[DIRTY_MEMORY_MIGRATION] = 0b00001111,
and atomic_rcu_read(&migration_bitmap_rcu)->bmap = 0b00000011,
the new_dirty will be 0b00001100, and this function will return 2 but not
4 which is expected.
the dirty pages in dirty_memory[DIRTY_MEMORY_MIGRATION] are all new,
so these should be calculated also.
Signed-off-by: Chao Fan <fanc.fnst@cn.fujitsu.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
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| .. | ||
| block.c | ||
| colo-comm.c | ||
| colo-failover.c | ||
| colo.c | ||
| exec.c | ||
| fd.c | ||
| Makefile.objs | ||
| migration.c | ||
| postcopy-ram.c | ||
| qemu-file-channel.c | ||
| qemu-file.c | ||
| qjson.c | ||
| ram.c | ||
| rdma.c | ||
| savevm.c | ||
| socket.c | ||
| tls.c | ||
| trace-events | ||
| vmstate.c | ||
| xbzrle.c | ||