[Qemu-devel] Question regarding two variables in qemu migration code

[Jidong Xiao]

Hi,

I am looking at the qemu source code, and trying to understand the
migration part. In arch_init.c, there are two variables which seems
quite confusing to me,

They are:

static uint64_t migration_dirty_pages;

static int64_t num_dirty_pages_period; // defined in function
migration_bitmap_sync()

Can anyone kindly explain that what does these two variables mean? Thanks.

-Jidong