mirror of https://github.com/proxmox/mirror_qemu
![]() 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> |
||
---|---|---|
.. | ||
block | ||
crypto | ||
disas | ||
exec | ||
fpu | ||
hw | ||
io | ||
libdecnumber | ||
migration | ||
monitor | ||
net | ||
qapi | ||
qemu | ||
qom | ||
standard-headers | ||
sysemu | ||
ui | ||
elf.h | ||
glib-compat.h | ||
qemu-common.h | ||
qemu-io.h | ||
trace-tcg.h |